Changing a flat tire on a tandem axle trailer has long been one of those roadside problems without a clean solution. A standard scissor jack often won’t clear the trailer frame, unloading the cargo takes time and effort, and calling for help in a remote area isn’t always an option. The Camco Curved Trailer-Aid with Chock and Pad is a purpose-built plastic ramp designed to address exactly that problem — by using the trailer’s second axle to do the lifting.
The product has been part of Camco’s accessory lineup for years and currently holds Amazon’s Choice status in the Wheel Immobilizers & Chocks category, with a 4.4-star average across 285 reviews. It’s made in the United States and is designed specifically for tandem axle trailers — the kind commonly used for hauling boats, equipment, utility loads, and recreational vehicles.
What it does and how it works
The Curved Trailer-Aid operates on a straightforward mechanical principle. Instead of lifting the trailer with a jack, the user places the curved ramp device in front of the good tire on the same axle as the flat. The driver then pulls the trailer forward slowly, rolling the good tire up and over the ramp. Because both tires share the same axle, the flat tire on the opposite side rises off the ground as the good tire climbs the curve — providing enough clearance to remove and replace the flat without any additional lifting equipment.
Camco states the device provides up to 6.5 inches (approximately 16.5 cm) of lift. That’s typically enough clearance to swap a standard trailer tire without needing to unload cargo or position a floor jack.
The process works in the opposite direction for dismounting — the trailer simply backs off the ramp once the spare is installed. No tools beyond a lug wrench are required to use the Trailer-Aid itself.
Build and compatibility
The Curved Trailer-Aid is constructed from high-density plastic and is rated to support trailers weighing up to 20,000 lbs (approximately 9,070 kg). The per-tire load limit is listed at 9,000 lbs, which covers most tandem axle trailer configurations used in recreational and light commercial applications.
It accommodates tires up to 32 inches in diameter, which covers the majority of trailer tire sizes used on utility, boat, and RV trailers in North America.
Dimensions in use are 10 inches tall by 19 inches wide by 5.75 inches deep. The complete kit weighs 6 lbs (2.7 kg), which makes it practical to store in a truck bed, trailer tongue box, or tow vehicle trunk without taking up meaningful space.
The product is designed for tandem axle trailers specifically — it does not work on single axle trailers, where there is no second tire on the same axle to provide the lifting effect.
What’s Included
The kit ships as a three-piece set. The primary component is the curved ramp itself — the device that actually does the lifting. Alongside it comes a wheel chock, which is placed behind the trailer’s opposite-side tires to prevent rollback during the tire change. The third piece is a rubber base pad that sits beneath the ramp to prevent sliding on smooth pavement or gravel and to protect hard surface areas from scuffing.
The base pad is a practical addition that addresses a real-world concern: without it, a plastic ramp on wet asphalt or a smooth concrete surface can shift unpredictably when a loaded trailer rolls onto it.
Key specifications
By the numbers, the Curved Trailer-Aid is built for demanding real-world use. It supports trailers up to 20,000 lbs and handles a per-tire load of up to 9,000 lbs, with compatibility for tires up to 32 inches in diameter. When deployed, the ramp measures 10 inches tall, 19 inches wide, and 5.75 inches deep, and delivers up to 6.5 inches — roughly 16.5 cm — of lift. Despite those load ratings, the entire kit weighs just 6 lbs (2.7 kg), keeping it easy to store and carry. The ramp and chock are finished in yellow and black, and the rubber base pad is black. The product is manufactured in the USA from plastic and ships complete with the curved ramp, wheel chock, and rubber base pad included.
Materials and U.S. manufacturing
Camco lists the Curved Trailer-Aid as proudly made in the USA using what it describes as premium materials. The yellow color makes it highly visible when deployed on the side of a road, which has a practical safety benefit in low-light conditions or on active roadways.
The plastic construction keeps the weight low and eliminates rust concerns — relevant for a product that will likely sit unused for extended periods in outdoor storage before being needed in a hurry.
Practical context: Who this is for
The Curved Trailer-Aid is a niche product solving a specific problem, and it does so with a logical mechanical approach. It’s most relevant for boat trailer owners — particularly those launching at remote ramps where roadside assistance coverage is limited — as well as equipment haulers such as contractors or landscapers running tandem axle utility trailers who can’t afford to unload a full cargo bed to change a tire. RV and travel trailer owners also stand to benefit, since many entry-level travel trailers and toy haulers run on tandem axles and come without any dedicated jack solution.
For any of these users, the alternative to having a Trailer-Aid is either carrying a dedicated bottle jack rated for the trailer’s tongue weight, or waiting for roadside assistance — neither of which is fast or simple in the field.
It’s worth noting that this tool requires the driver to move the trailer, which means the tow vehicle must remain attached and drivable at the time of the flat. If the tow vehicle itself is disabled or if road conditions make maneuvering difficult, the Trailer-Aid’s usefulness is reduced.
What buyers are saying
With 285 reviews and a 4.4-star average on Amazon as of mid-2026, the Curved Trailer-Aid has a reasonably strong track record among verified purchasers. Amazon’s Choice designation in its product category reflects sustained purchase volume and ratings performance.
The product is marketed directly against the “no jack required” use case, and the core premise — using the axle geometry of a tandem trailer to your advantage — is mechanically sound and has been validated by years of real-world use.
Limitations worth noting
The Curved Trailer-Aid is not compatible with single axle trailers — this is the most common source of confusion among buyers. It also requires a driver capable of slowly and precisely moving the trailer forward, which may be difficult in certain roadside situations or for less experienced drivers handling a large rig.
The plastic construction, while lightweight and rust-resistant, will eventually show wear over repeated use. Camco does not publish a specific cycle life rating, so buyers should inspect the device periodically if it sees regular use.
Pricing and availability
The Camco Curved Trailer-Aid with Chock and Pad is available through Amazon. As of publication, the product carries Amazon’s Choice designation in its category and is listed at $50.49, reduced from its regular price of $55.99. Availability and pricing may vary over time, particularly during seasonal RV and camping promotions.
Source: Camco Curved Trailer-Aid
