If you're tired of holding your breath every time you load a low-clearance car, it might be time to look into ramp overs for enclosed trailers. There's nothing quite like that gut-wrenching sound of a front splitter or a mid-mounted exhaust scraping against the edge of a trailer ramp. It's a sound that haunts car enthusiasts, and honestly, it's usually enough to ruin an entire weekend at the track or a car show.
Most enclosed trailers aren't exactly built with supercars or slammed tuners in mind. They're designed for general utility, which means the floor is flat and the wheel wells often stick up several inches inside the box. If you're hauling something wide and low, those wheel wells become a massive obstacle. That's where ramp overs come into play. They essentially raise the floor level for your tires, allowing you to drive right over the interior fenders without worrying about clearance.
Why You Actually Need Them
You might think you can get away with just a few blocks of wood or some long race ramps at the back door. While those help with the initial approach angle, they don't do anything for the internal clearance. If your car is wide, you're stuck trying to squeeze between the interior wheel wells, often with only an inch or two to spare on either side. It's a recipe for rashed wheels and a whole lot of stress.
Installing ramp overs for enclosed trailers changes the geometry of the entire loading process. By lifting the car up, you're creating a "false floor" that sits higher than the wheel wells. This means you can use the full width of the trailer without fear. Plus, it makes opening the car door much easier. If the car is sitting higher, the door can often swing out over the trailer's wheel well instead of banging into it. Your shins and your door edges will definitely thank you.
Picking the Right Material
When you start looking at options, you'll realize there are a few different ways to go about this. No single material is perfect for everyone; it really comes down to your budget, how much weight you can handle, and how permanent you want the setup to be.
The DIY Wood Route
This is the most common path for folks who are handy with a circular saw. You can build these out of 2x10s or 2x12s and some sturdy plywood. It's relatively cheap, and you can customize the height exactly to your needs. The downside? Wood is heavy. If you're building a full-length set of ramp overs, you're adding a significant amount of "dead weight" to your trailer before you've even loaded the car. Also, wood can get slippery when it's wet or oily, so you'll want to add some grip tape or non-slip paint.
Professional Aluminum Builds
If you want the "pro" look and want to save on weight, aluminum is the way to go. These are usually fabricated by trailer specialty shops. They're incredibly strong, they won't rot, and they look fantastic. Many of them feature punched holes for traction and integrated tie-down points. The catch is the price. Aluminum fabrication isn't cheap, but if you're hauling a six-figure car, the peace of mind is usually worth the investment.
High-Density Foam and Composites
Brands like Race Ramps have popularized the use of high-density foam for ramp overs for enclosed trailers. These are surprisingly tough and can support thousands of pounds, but they weigh almost nothing. If you're someone who constantly moves things around in your trailer, the portability of foam is a huge plus. They're also "kind" to the car; if you happen to bump one while moving things around, it won't scratch your paint or dent a panel.
Thinking About the Approach Angle
It's not just about the height inside the trailer; it's about how the car gets up there in the first place. When you raise the floor with ramp overs, you're essentially making the "cliff" at the back of the trailer taller. If you don't extend the rear ramp or use auxiliary ramps, you might solve the wheel well clearance problem but create a new problem at the door.
Most people find that they need "flap extensions" or "pro-assist ramps" to bridge the gap from the ground to the new, higher floor level. You want a long, gradual slope. The goal is to keep the car's body as level as possible while it's transitioning from the pavement to the trailer. If the transition is too sharp, you'll just end up high-centering the car on the hinge of the trailer door.
Measurement Is Everything
Don't just wing it. Before you buy or build anything, you need to grab a tape measure and a friend. You need to know the exact width of your tires (outside to outside) and the total width of the car at its widest point. Then, measure the height of those internal wheel wells. You want your ramp overs to be at least an inch or two taller than the wells to give yourself some "squish" room for the suspension.
Also, consider the length. Do you want the ramp overs to run the full length of the trailer, or just a section? A full-length "deck" is easier to walk on and gives you more flexibility for tie-down spots, but it's more expensive and heavier. Runners (two separate tracks) are lighter but require more precision when you're driving the car in.
Installation and Safety Tips
Once you've got your ramp overs for enclosed trailers ready to go, don't just toss them in there and call it a day. They need to be secured. The last thing you want is a ramp shifting while you're halfway up it.
If you're using wood or aluminum, bolting them through the trailer floor is the safest bet. Use heavy-duty carriage bolts and large washers on the underside of the trailer to spread the load. If you're using foam inserts that you want to be able to remove, look into heavy-duty Velcro or a "tab and slot" system that keeps them from sliding.
Another thing to think about is tie-downs. When the car is sitting on top of the ramp overs, your old D-ring locations might not work anymore. You'll likely need to install new tie-down points directly onto the ramp overs (if they're strong enough) or through them into the trailer frame. Always make sure you're pulling the car down onto something solid that won't compress or shift during a long haul.
The "Walking" Factor
One thing people often forget until the first time they use their new setup is the "walking room." If you build narrow runners for the tires, you've basically created a tripping hazard for yourself. When you're trying to squeeze out of the car or strap it down, you'll be stepping on and off these raised platforms.
If your budget and weight capacity allow, filling in the gap between the ramps to create a flat, raised floor is a massive quality-of-life upgrade. It makes the trailer feel more like a mobile garage and less like a precarious obstacle course. It also gives you a flat surface to roll a floor jack or a tool chest across.
Wrapping It Up
At the end of the day, ramp overs for enclosed trailers are all about reducing stress. Towing a car is stressful enough—dealing with traffic, weather, and fuel stops is plenty to handle. You don't need the added drama of wondering if you're going to tear the front bumper off every time you arrive at the track.
Whether you go the DIY route with some plywood or spring for a custom aluminum setup, the first time you drive over those wheel wells with inches of clearance to spare, you'll wonder why you didn't do it sooner. It's one of those modifications that feels like a luxury until you have it, and then it feels like a total necessity. Take the measurements, choose your material, and stop worrying about that "crunch" sound for good.