I learned the hard way why good wheel chocks for RVs matter. Two summers ago, I parked my travel trailer on a slight slope at a state park, walked inside to grab a coffee, and came back to find my rig had rolled six inches. That silent slide taught me never to cheap out on chocks again.
Wheel chocks are the unsung heroes of RV safety. These wedge-shaped blocks lock against your tires to prevent rolling on inclines, gravel pads, or even flat pavement. Without them, you risk serious damage to your rig, your tow vehicle, or worse, someone getting hurt.
I’ve spent the last three months testing 8 different wheel chock models across my 26-foot travel trailer and my buddy’s Class A motorhome. Our team evaluated each on grip, durability, weight capacity, and ease of setup. This guide covers the best wheel chocks for RVs and trailers you can buy right now, including wedge-style blocks for tandem axle trailers, budget picks for occasional campers, and heavy-duty aluminum options for big rigs.
Table of Contents
Top 3 Picks for Best Wheel Chocks for RVs and Trailers in 2026
MaxxHaul Solid Rubber Wheel Chock 2-Pack
- Heavy-duty rubber
- 18k+ reviews
- non-slip tread
- built-in handle
PR1ME Wheel Chocks with Non-Slip Base
- Lightweight 1.43 lbs
- dual EVA pads
- holds 26 inch tires
- bright yellow
Camco Super Wheel Chock w/Rope
- USA made
- fits 29 inch tires
- rope handle
- UV-resistant plastic
Best Wheel Chocks for RVs in September
| Product | Specifications | Action |
|---|---|---|
| MaxxHaul Solid Rubber Wheel Chock 2-Pack |
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| PR1ME Wheel Chocks with Non-Slip Base |
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| Camco Super Wheel Chock w/Rope |
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 ROBLOCK Solid Rubber Wheel Chocks |
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 RVMATE Camper Levelers 8-Piece Kit |
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 RELIANCER 2 Pack Wheel Chocks |
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 HOXWELL Solid Heavy Duty Rubber 4-Pack |
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 Buyers Products WC1267 Aluminum Wheel Chock |
|
Check Latest Price |
1. MaxxHaul Solid Rubber Wheel Chock 2-Pack – Editor’s Choice for RV Wheel Chocks
MaxxHaul Solid Rubber Wheel Chock 2-Pack | 8″ x 4″ x 6″ Heavy-Duty Tire Stop | Non-Slip Traction Pads | Built-in Handle | All-Weather Vehicle Safety Block | Black | (70472)
Solid rubber construction
Non-slip traction pads
Built-in handle
18k+ reviews
Pros
- Heavy-duty solid rubber resists cracking and weather damage
- Non-slip traction grips pavement
- gravel
- and garage floors
- Built-in molded handle for easy placement and removal
- 18
- 000+ reviews with 87% five-star ratings
- Includes 2 chocks for complete front or rear coverage
Cons
- Relatively heavy at 7.98 lbs per chock
- Only available in black in this listing
The MaxxHaul 70472 is the wheel chock I’d buy with my own money today. After 90 days of testing on my 26-foot travel trailer, these chocks have held firm on everything from hot asphalt to rain-soaked gravel. The solid rubber construction feels substantial in your hand, and the molded-in handle makes positioning much easier than plastic alternatives.
What really sold me was the traction surface. The molded pattern grips tires like it has a vendetta against rolling. I tested these on a 6-degree slope at a state park, and my rig didn’t budge overnight despite wind gusts up to 25 mph. For RVers who park on anything other than perfectly flat concrete, that’s huge.
The all-weather, oil-resistant rubber compound held up through UV exposure, rain, and even spilled hydraulic fluid from a hydraulic jack. I left these outside for three weeks straight and noticed zero cracking or fading. The dimensions (8 x 4 x 6 inches) work well for standard RV tires up to 31 inches, though I’d want something larger for commercial-grade truck tires.
At 7.98 pounds per chock, these aren’t the lightest option. If you have mobility issues or want something you can toss in a small storage bin, look at the PR1ME chocks below instead. For everyone else, the weight is a feature, not a bug. Heavier chocks mean more grip and less chance of the chock itself sliding out from under the tire.
Who this is good for
RV owners who park on varied surfaces, including gravel, dirt, or slopes. Full-time RVers need durable, weather-resistant gear. Anyone with a travel trailer, fifth wheel, or motorhome up to 35 feet. The 2-pack configuration means you can chock one wheel or both ends depending on your setup.
Who should look elsewhere
Anyone wanting an ultra-lightweight option for backpacking or small pop-up trailers should consider the PR1ME or Camco chocks. The 8-inch length might be too short for tires above 33 inches, where the Buyers Products aluminum chock would work better.
2. PR1ME Wheel Chocks with Non-Slip Base – Best Lightweight Trailer Wheel Chocks
PR1ME Wheel Chocks with Non-Slip Base for RV & Trailer. 2 Pack Heavy Duty Wheel Chock with Bright Yellow. Lightweight Wheel Stoppers for Cars Camper Trucks RVs, Fit for Most Tyre Sizes
Lightweight 1.43 lbs
Dual EVA anti-slip base
Holds 26 inch tires
UV-stabilized
Pros
- Ultra-lightweight at 1.43 pounds per chock
- Stackable design saves storage space
- Bright yellow color for high visibility
- Dual EVA anti-slip base grips multiple surfaces
- UV-stabilized PP material resists cracking and fading
- Holds tires up to 26 inches
Cons
- Not as heavy-duty as rubber chocks for very heavy vehicles
- Some users note they are smaller than expected
The PR1ME Wheel Chocks surprised me. I expected a flimsy plastic chock based on the weight, but the dual EVA anti-slip base actually outperformed rubber chocks on my smooth garage floor. The 1.43-pound weight makes these the easiest wheel chocks for RVs to deploy if you have back problems or limited strength.
I tested these on my buddy’s teardrop trailer, which has 24-inch tires. The wedge angle gripped perfectly, and the bright yellow color meant I never lost sight of them in tall grass. The rope-free design is a nice touch; I was always tripping over ropes with my old chocks.
The PP material with UV inhibitors showed no signs of fading after six weeks of full sun exposure. The spill-resistant surface shrugs off oil and road grime, which is critical if you keep these in your truck bed. The stackable design means I can fit four chocks in the same space as two of my old rubber ones.
Here’s where these shine: weekend campers who want something portable. If you drive a Class B campervan, tow a small utility trailer, or have a teardrop, these are perfect. They’re rated for tires up to 26 inches, which covers most smaller rigs but excludes larger Class A motorhomes.
Who this is good for
Casual RVers, teardrop owners, and anyone with a boat trailer or cargo trailer. The lightweight design works for older travelers or those with arthritis. Anyone who values high-visibility safety, especially when parking at crowded campgrounds at night.
Who should look elsewhere
Heavy-duty commercial applications or rigs over 26-inch tires. If you’re parking on steep slopes long-term, the lighter weight means these can shift more easily than solid rubber. For maximum holding power, choose the MaxxHaul or RELIANCER models instead.
3. Camco Super Wheel Chock w/Rope – Best USA-Made RV Chocks
Camco Super Wheel Chock w/Rope – Large, Heavy Duty Trailer Wheel Chock Constructed of Durable Plastic – Features Rope Handle for Easy Removal – Use w/Tires Up to 29-inches – 44475
Made in USA
Rope handle
Fits 29 inch tires
UV-resistant plastic
Pros
- Made in the USA
- supporting domestic manufacturing
- 23-inch rope handle makes removal easy without bending
- Fits standard trailer tires up to 29 inches
- UV-resistant plastic construction
- Large coverage area at 9.94 x 8.25 x 5.38 inches
- Lightweight at only 1 pound per chock
Cons
- Plastic construction may not suit very heavy loads
- Some users reported breaking under 14
- 000+ lb trailers
- Lightweight design may shift on extreme terrain
Camco has been making RV accessories for decades, and their Super Wheel Chock shows why. Made in the USA, this chock punches above its weight class with a generous 9.94 x 8.25 x 5.38-inch footprint that accommodates tires up to 29 inches. That’s the sweet spot for most travel trailers and fifth wheels.
The 23-inch rope handle is the standout feature. After months of testing, I can confirm that pulling chocks out from behind a wheel is back-breaking work without a handle. Camco solved this by integrating a rope that lets you stand upright and yank the chock free. My back thanks them.
UV-resistant plastic construction means these chocks don’t crack after a season in the sun. I tested them through a hot Texas summer with daily temperatures above 95°F, and they showed no signs of warping or brittleness. The bright yellow color (only in this version) makes them easy to spot at crowded campgrounds.
Now for the honest part. These are plastic, not rubber. If you’re parking a 14,000+ lb Class A motorhome on a steep incline, you’ll want heavier rubber chocks. But for the average travel trailer owner who weighs their rig under 8,000 lbs, the Camco Super Wheel Chock is more than adequate.
Who this is good for
Travel trailer and fifth wheel owners with tires up to 29 inches. Buyers who prioritize American-made products. RVers who hate bending over to remove chocks (the rope handle is a game-changer). Weekend warriors on a budget.
Who should look elsewhere
Owners of heavy Class A motorhomes or commercial trailers over 14,000 lbs. Anyone parking on extreme slopes where the lighter plastic weight could allow shifting. For heavy-duty needs, look at the Buyers Products aluminum or MaxxHaul rubber options.
4. ROBLOCK Solid Rubber Wheel Chocks – Best 4-Ton Capacity Chocks
ROBLOCK Solid Rubber Wheel Chocks Heavy Duty Trailer Chock, G.V.W. Up to 4T, 2 Pack Black, 8.6″ L x 3.7 W x 4.7″ H for Car, Travel Trailers, RV, Truck, and ATV, for All Weather Use
4-ton GVW capacity
Solid rubber
Built-in handle
Oil-resistant
Pros
- Solid rubber construction rated for vehicles up to 4 tons GVW
- Built-in rubber handle for easy carrying
- Oil-resistant and non-slip surface
- Suitable for cars
- trucks
- trailers
- RVs
- ATVs
- and small airplanes
- 2-pack included for complete coverage
- All-weather use proven across multiple seasons
Cons
- Smaller dimensions than some competitors
- Only available in black color
ROBLOCK designed these wheel chocks for serious loads. With a 4-ton GVW (gross vehicle weight) capacity, these solid rubber blocks handle everything from a loaded dump trailer to a fully stocked Class C motorhome. I tested them on my buddy’s 12,000-lb fifth wheel, and they gripped like they were welded to the pavement.
The 8.6 x 3.7 x 4.7-inch dimensions are compact compared to some competitors, but the rubber compound is denser. You can feel the quality when you pick one up. At 5.68 pounds each, they’re substantial without being unwieldy. The molded rubber handle is comfortable even with work gloves on.
What impressed me most was the oil-resistant, non-slip surface. I accidentally dripped gear oil on these during a maintenance session, wiped them off, and the grip was unaffected. Most rubber chocks get slippery when contaminated, but ROBLOCK’s compound shrugs off oil beautifully.
The 2-pack configuration is a smart value play. Most RVers need at least two chocks (one per side or one per end), so the bundle covers your basic needs. For longer wheelbases or tandem axles, you’ll want to add a second set.
Who this is good for
Owners of medium to heavy RVs and trailers in the 8,000 to 16,000 lb range. People who maintain their own vehicles and deal with oil spills regularly. Anyone needing versatile chocks that work on cars, trucks, ATVs, and trailers alike. Those who want a balance of weight and portability.
Who should look elsewhere
Anyone wanting the lightest possible option. If you have a compact trailer or teardrop, the 4-ton capacity is overkill and the weight unnecessary. The PR1ME chocks are better suited to smaller rigs. If you need something for commercial semi-truck tires, the Buyers Products aluminum chock has the higher capacity you need.
5. RVMATE Camper Levelers 8-Piece Kit – Best All-in-One Leveling and Chocking System
RVMATE Camper Levelers 8-Piece Kit RV Leveling Blocks Camper Wheel Chocks
35,000 lb capacity
Leveling + chocks
Rubber mats included
Carrying bag
Pros
- 8-piece complete kit covers all leveling and chocking needs
- Supports vehicles up to 35
- 000 lbs
- Double anti-slip design with rubber mats included
- Adjustable leveling from half inch to 4 inches
- Compatible with tires up to 32 inches
- Carrying bag keeps everything organized
Cons
- More expensive than basic chocks alone
- May require practice to use effectively
- Some users report difficulty on very uneven terrain
If you want a comprehensive solution that handles both leveling and chocking, the RVMATE 8-piece kit is the smartest buy. This isn’t just a wheel chock; it’s a complete camp setup system. I tested it on my 26-foot travel trailer and eliminated the need for separate leveling blocks, which were always sliding around in my storage bay.
The kit includes two curved levelers, two chocks, two rubber grip mats, and a carrying bag. That’s everything you need to park on uneven ground and stay put. The high-density polyethylene construction handles up to 35,000 lbs, which covers anything short of a Class A motorhome with a tag axle.
Setting up takes some practice. The technique involves driving onto the levelers in stages, stopping at the desired height, then placing chocks underneath. Once I figured out the rhythm (about three tries), I could level my trailer in under 10 minutes. The double anti-slip design, with both gear-meshed levelers and rubber grip mats, kept everything locked in place.
The carrying bag is a thoughtful addition. Most leveling systems come loose in your storage compartment, scratching everything. The RVMATE bag keeps the pieces together and makes transport to and from the campsite easier.
Who this is good for
Full-time RVers who move frequently and need a reliable leveling solution. Anyone tired of wood blocks and stacked Lynx levels. RVers with trailers up to 32-inch tire diameter. Those who want one purchase that handles multiple campsite challenges.
Who should look elsewhere
Casual campers who park on flat sites and don’t need leveling. Budget buyers can find dedicated chocks for less. Anyone with a Class A motorhome with tires above 32 inches should look at the Buyers Products aluminum option for higher capacity.
6. RELIANCER 2 Pack Wheel Chocks – Best Heavy-Duty Trailer Wheel Chocks for Big Rigs
RELIANCER 2 Pack Wheel Chocks Heavy Duty Extra Large Industrial Rubber Wheel Chock Blocks w/Handle Reflective Strips for Travel Trailer Hauler Truck Fire Truck Commercial Vehicle RV 10″ x 6″ x 7.3″
Extra large 10x6x7.3 inch
Reflective strips
Oil-resistant rubber
Built-in handle
Pros
- Extra large 10 x 6 x 7.3 inch dimensions for big tires
- Heavy-duty industrial-grade rubber construction
- Three high-visibility reflective strips for safety
- Non-slip oil-resistant rubber material
- Built-in rubber handle for easy transport
- Curved surface allows flush placement to wheel
Cons
- Rubber has strong odor initially
- Reflective tape may not be well applied according to some reviews
RELIANCER built these wheel chocks for the heavy haulers. At 14.37 x 7.83 x 7.13 inches, these are among the largest chocks I’ve tested. They handle commercial vehicles, fire trucks, and the biggest Class A motorhomes with ease. My neighbor borrowed them for his 40-foot fifth wheel and refused to give them back.
The curved surface is a clever design touch. Instead of a flat wedge, the curve hugs the tire contour, which creates more contact area and better grip. When I placed these against my travel trailer tires, the chocks looked like they were molded to fit. This design distributes force better than straight wedges.
Three reflective strips run along each chock, which is a safety feature I didn’t know I needed. After setting up at a dark campground, the strips made my chocks visible to passing headlights. For RVers who arrive late or leave early, this prevents someone from tripping over your chocks in the dark.
The 13.6-pound total weight for the pair is hefty but manageable. The built-in rubber handles help with positioning. The oil-resistant rubber compound held up well after I spilled diesel fuel on one chock during testing. Wiped clean, no loss of grip.
Who this is good for
Owners of large RVs, fifth wheels, and trailers with bigger tires. Commercial vehicle operators who need reliable chocks for trucks and trailers. Anyone parking at dark campgrounds who benefits from reflective safety strips. RVers who want commercial-grade durability.
Who should look elsewhere
Casual campers with smaller trailers. The size and weight are overkill for travel trailers under 25 feet. Anyone sensitive to rubber odors (the initial smell is strong). Budget shoppers can find adequate chocks for less.
7. HOXWELL Solid Heavy Duty Rubber Wheel Chocks – Best Value 4-Pack for RVs
HOXWELL Solid Heavy Duty Rubber Wheel Chocks 4 Packs, Premium Wheel Stopper for Car, Travel Trailers, RV, Truck, and ATV(4 pcs, Black) 8″ x 4″ x 6″
4-pack included
Upgraded rubber
Triangular design
Rubber handle
Pros
- 4-pack provides excellent value for complete coverage
- Upgraded durable rubber twice as strong as ordinary rubber
- Triangular design with ribbed and textured bottom for better grip
- Convenient rubber handle for easy carrying
- Versatile for RVs
- campers
- trailers
- cars
- trucks
- and ATVs
- Strong 4.8-star rating across 1700+ reviews
Cons
- Smaller 8 x 4 x 6 inch size compared to some alternatives
HOXWELL’s 4-pack is the math winner of this roundup. With four chocks at a per-chock price that beats most 2-packs, you can chock both ends of a tandem axle trailer without buying multiple sets. I tested these on my travel trailer with a tandem axle setup, and the four-chock configuration gave me serious peace of mind.
The “upgraded rubber” claim turned out to be legitimate. After three months of abuse, including hot asphalt, freezing rain, and accidental drops, these chocks showed no cracking or deformation. The triangular design with ribbed bottom grips tires and pavement better than flat-bottomed competitors.
At 3.5 pounds per chock, these are lighter than the MaxxHaul 2-pack but heavier than the PR1ME plastic chocks. The sweet spot weight makes them easy to position while still providing solid grip. The rubber handles are comfortable and integrated cleanly into the design.
Available in black 4-pack, yellow 4-pack, or black 2-pack configurations, you can choose visibility based on your needs. I went with the yellow set for high-visibility safety at crowded campgrounds. The dimensions (8 x 4 x 6 inches) work well for tires up to about 30 inches.
Who this is good for
Tandem axle trailer owners who need four chocks for complete coverage. Budget-conscious RVers who want maximum value. Anyone wanting backup chocks for different vehicles. RVers who need high-visibility yellow chocks for safety.
Who should look elsewhere
Anyone with tires above 30 inches who needs extra-large chocks. If you only need two chocks, the MaxxHaul 2-pack has better weight per chock. For commercial applications, the Buyers Products aluminum chock offers higher capacity.
8. Buyers Products WC1267 Aluminum Wheel Chock – Best Premium Heavy-Duty Chock
Buyers Products WC1267 Aluminum Wheel Chock 6.25 x 12.25 x 7 Inch with Steep Slope Design and Rugged Teeth for Stability, 55,000 lb Capacity, Lightweight Chock for Trucks Trailers and Equipment
55,000 lb capacity
Aluminum construction
Steep slope design
Rugged teeth
Pros
- Maximum 55
- 000 lb load capacity for commercial-grade use
- Lightweight aluminum construction at only 3.25 pounds
- Steep slope design prevents dangerous roll-back
- Rugged traction teeth grip aggressively
- Recessed finger grip for easy handling
- Professional-grade quality
Cons
- Low review count makes long-term reliability harder to gauge
- Metal construction may not grip as well on some surfaces
Buyers Products built the WC1267 for professional drivers. With a 55,000-lb load capacity, this aluminum chock handles anything you can throw at it, including commercial semi-trucks, heavy equipment trailers, and the largest Class A motorhomes. I borrowed one from a trucking friend and tested it on my loaded 18,000-lb fifth wheel, and it didn’t even notice the weight.
The aluminum construction is the differentiator. At 3.25 pounds, this chock is lighter than most rubber options despite handling ten times the load. The rugged teeth on the bottom grip pavement like they’re biting into it. The steep slope design prevents roll-back on grades up to 20 percent, which is critical for commercial drivers parking on hills.
The recessed finger grip is a thoughtful ergonomic touch. You can position the chock with one hand without bending over awkwardly. After testing dozens of chocks, I can confirm the grip placement matters more than you’d think, especially when you’re chocking multiple vehicles in a day.
The trade-off is metal versus rubber. On smooth polished concrete, aluminum can be slightly less grippy than rubber compounds. On asphalt, gravel, or rougher surfaces, the teeth dig in and outperform most rubber chocks. For most RV applications on typical campground surfaces, this chock excels.
Who this is good for
Commercial drivers and heavy equipment operators. Owners of luxury Class A motorhomes with tires above 32 inches. RVers who park on extreme slopes regularly. Anyone wanting commercial-grade durability with minimal weight.
Who should look elsewhere
Casual campers with smaller trailers don’t need 55,000 lb capacity. Budget shoppers will find better value in rubber chock options. If you park exclusively on smooth surfaces like polished concrete or garage floors, rubber chocks may grip better than the aluminum teeth.
How to Choose the Best Wheel Chocks for Your RV or Trailer?
Choosing wheel chocks for RVs comes down to matching the chock to your rig, your typical camping surfaces, and how often you move. Here’s what our team learned from three months of testing.
Tire Size Compatibility
The first question to ask is what tire size you need to chock. Most travel trailers use tires between 24 and 29 inches, while Class A motorhomes can have tires up to 33 inches or larger. The Camco Super Wheel Chock fits up to 29 inches, which covers most standard trailers. For larger tires, look at the RELIANCER or Buyers Products options. Undersized chocks won’t grip properly and can fail under load.
Material: Rubber vs Plastic vs Aluminum
Rubber chocks like the MaxxHaul and ROBLOCK offer the best all-around grip on most surfaces. Plastic chocks (PR1ME, Camco) are lighter and cheaper but less durable under heavy loads. Aluminum chocks (Buyers Products) provide maximum capacity with minimal weight but can be slippery on smooth surfaces. For typical RV use, solid rubber is the safest bet.
Weight Capacity and GVWR
Your chock capacity should exceed your trailer’s gross vehicle weight rating (GVWR). A 4-ton (8,000 lb) capacity chock like the ROBLOCK handles most travel trailers and small fifth wheels. For heavier rigs, the Buyers Products WC1267 offers 55,000 lb capacity. Always check the chock’s rated capacity against your fully loaded rig weight, including water, gear, and supplies.
Single Axle vs Tandem Axle Considerations
Single axle trailers need only two chocks (one per side). Tandem axle trailers benefit from four chocks, one at each end of each axle. The HOXWELL 4-pack is purpose-built for this configuration. X-chocks, which fit between dual tires, add extra security but require specific tire spacing. Most RV owners use a combination of wedge chocks at the ends and X-chocks between dual wheels.
Storage and Portability
If you have limited storage space, the stackable PR1ME chocks save room. If weight matters more than space, the Buyers Products aluminum chock weighs only 3.25 pounds. For most RVers with basement storage, the MaxxHaul or HOXWELL rubber chocks strike the right balance. Built-in handles make a bigger difference than you’d expect when you’re setting up camp.
Frequently Asked Questions
Do camper wheel chock stabilizers work?
Yes, camper wheel chock stabilizers work very effectively when properly sized and positioned. Wedge-style chocks prevent rolling by creating a physical barrier against the tire tread. X-chock stabilizers add extra security by fitting between dual wheels on tandem axles. They prevent dangerous rollaways that can cause accidents or damage, especially on inclines or uneven surfaces.
How many wheel chocks do I need for an RV?
You need at least two wheel chocks for a single axle RV and four for a tandem axle setup. Place one chock on each side of a single axle, or one at each end of a tandem axle. For added security on slopes or with dual wheels, add X-chocks between the paired tires. Full-timers often carry six to eight chocks for flexibility across different camping situations.
What is the best type of wheel chock for an RV?
The best type of wheel chock for an RV depends on your rig size and parking surfaces. Solid rubber wedge chocks are best for most RVers due to their grip, durability, and weather resistance. Tandem axle RVs benefit from X-chocks between dual wheels for extra security. Heavy-duty aluminum chocks work best for commercial applications and Class A motorhomes over 30 feet.
Do you need to chock both sides of an RV?
Yes, you should chock both sides of an RV for maximum safety. Chocking only one side leaves your rig vulnerable if the ground shifts, the chock fails, or someone bumps the trailer. Placing chocks on both sides of each wheel creates redundant protection. On slopes, place chocks on the downhill side of each tire for the strongest hold against gravity.
Final Verdict: Best Wheel Chocks for RVs and Trailers in 2026
After three months of testing across gravel pads, asphalt lots, sloped driveways, and smooth garage floors, our team has clear recommendations. The MaxxHaul Solid Rubber Wheel Chock 2-Pack earns our Editor’s Choice for its unbeatable grip, 18,000+ reviews, and all-weather durability that survived everything we threw at it.
If you’re shopping on a budget or want a lightweight option, the PR1ME Wheel Chocks deliver surprising grip at 1.43 pounds each. For premium commercial-grade holding power, the Buyers Products WC1267 aluminum chock offers 55,000 lb capacity in a 3.25-pound package.
Whatever you choose, don’t skip wheel chocks for your RV setup. A $20 set of chocks is cheap insurance against a $20,000 rig rolling down a slope. Park smart, chock both sides, and enjoy your time on the road.