How to Make Car Ramps Higher | Raise Clearance Safely

When your front bumper or lip scrapes before the tires even reach the ramp, the issue is usually approach angle, not just peak height. Raising a ramp without lengthening its incline makes the slope steeper, which can worsen scraping and increase the risk of the ramp shifting under load. The safe path is building taller custom ramps with a longer run-up, or adding a purpose-built extension ahead of your existing ramps to make the climb more gradual.

Measure Your Clearance Before Building

Before cutting any lumber, measure the final height you actually need and the front-lip clearance of your vehicle.

For many lowered cars, a peak of roughly 8–12 inches is enough to clear the front bumper. That height clears the front lip on most passenger cars while keeping the approach manageable.

If you only need a few extra inches, a simpler route works: place a short board in front of each ramp so the tire climbs the board first, raising the front end enough to clear the ramp lip. Depending on your vehicle’s clearance, a 2×6, 2×8, 2×10, or even a 1×4 board can do the job. The board must sit flat and stay anchored; an unsecured board will shift the moment the tire rolls onto it.

Build Stepped Ramps From Layered Lumber

Layered lumber is the most reliable DIY method because it creates a stepped surface that the tire climbs gradually instead of hitting a single vertical face. Build each ramp from identical layers so both sides rise evenly, and use dry, unwarped wood—damp or warped boards create an unstable platform you cannot trust under a car.

1. Start with the longest board as the base layer, then align each shorter board on top.
2. Fasten each layer with construction adhesive plus screws every 6–8 inches so the stack behaves as one solid unit.
3. Add a stop block at the top edge to keep the car from driving too far forward.
4. Cover the driving surface with coarse sandpaper or grip tape so tires do not slip.
5. Seal the wood with exterior polyurethane or deck sealer to resist moisture and garage chemicals.

When you modify existing ramps rather than building new ones, attach a same-width extension piece and secure it so it cannot shift.

Height Versus Slope: The Safety Trade-Off

A shallower slope is always safer than a taller ramp with a steep face. Too-steep an approach increases scraping, raises the chance of the ramp moving as the tire climbs, and puts more stress on the front suspension. Lengthening the run-up is what makes extra height usable.

• Set both ramps on flat, level ground. Uneven surfaces may require shimming so each ramp lays flat.
• Keep the two ramps parallel so the vehicle rises evenly, side to side.
• Reinforce the front edge where the tire first makes contact—this is the point that splits or cracks under load.
• Avoid bricks or improvised stacking. They lack stability and can shift or crumble under a vehicle’s weight.

If you would rather buy than build, a set of quality ramps removes the guesswork entirely. Our tested roundup of the best vehicle ramps for oil changes compares load ratings, clearance heights, and build quality across the top options.

Skip the common mistakes that send people back to the drawing board: raising the peak without lengthening the approach, skipping the stop block, and failing to anchor extensions. Each one turns a solid idea into a dangerous one.

FAQs