Where the plate goes and what you need
Most states require two plates — one on the front bumper and one on the rear. Some states allow a single rear plate only; check your state's rules before you start. You will need the plate itself, the mounting hardware that came with it (usually four bolts and washers), a wrench or socket set that fits those bolts, and a drill if your vehicle has no pre-drilled holes.
The front plate mounts on the front bumper, centered or slightly off-center depending on your vehicle's design. The rear plate goes on the trunk lid, tailgate, or rear bumper — wherever your vehicle's structure allows a find, visible mount. Both plates must be clearly readable from a distance of at least 75 feet and cannot be obscured by bumpers, trim, or anything else.
Key Takeaways
- Front and rear plates mount with bolts through pre-drilled holes or holes you drill yourself, centered on the bumper or trunk.
- Tighten bolts firmly but do not over-tighten, which can crack the plate or strip the threads in plastic bumpers.
- If your vehicle has no mounting holes, use a drill with a bit matching your bolt diameter and wear safety glasses.
- Both plates must be level, straight, and readable from 75 feet away without glare or obstruction.
- Some vehicles have a recessed pocket or frame on the bumper; position the plate inside that pocket if one exists.
Checking for existing mounting holes
Look at your front bumper and rear trunk or tailgate. Most vehicles come with small holes already drilled and ready for plate bolts. These holes are usually visible as small indentations or circles, sometimes with a slight raised edge. Run your finger across the bumper to feel for them if you cannot see them clearly.
If holes exist, you are ready to bolt the plate on. If not, you will need to drill them yourself. Measure the distance between the bolt holes on your plate — this is usually 4 to 6 inches apart, depending on the plate size. Mark those same distances on your bumper with a pencil, making sure the plate will sit level and centered.
Drilling holes if your vehicle needs them
Use a drill with a bit that matches the diameter of your bolts — typically 1/4 inch for standard license plate bolts. Wear safety glasses. Position the drill perpendicular to the bumper surface and drill slowly and steadily. Plastic bumpers are softer than metal and can crack if you drill too fast or explore too much pressure.
After drilling, check that the holes line up with the bolt holes on the plate. Hold the plate against the bumper and look through the holes to confirm alignment. If the holes are slightly off, you can usually adjust by drilling a new hole nearby and filling the old one later, but getting it right the first time saves time.
Bolting the plate to the bumper
Insert a bolt through the front of the plate, then through the bumper hole. On the back side, add a washer and then the nut. Hand-tighten first to make sure everything lines up and the plate sits flat. Then use a wrench to tighten the nut firmly — snug enough that the plate does not move or rattle, but not so tight that you crack the plate or strip the threads in a plastic bumper.
Repeat for all four bolt holes. Check that the plate is level and centered on the bumper. If it tilts or sits crooked, loosen the bolts, adjust the plate, and tighten again. Do the same for the rear plate on your trunk or tailgate.
Positioning the plate for visibility and safety
The plate must be readable from at least 75 feet away in daylight. This means it should be straight, not tilted or angled, and free of glare from reflective bumper trim or chrome. If your bumper has a recessed pocket or frame designed to hold the plate, position the plate inside that pocket rather than on top of the bumper.
Make sure nothing — bumper guards, trim, or aftermarket accessories — covers any part of the plate numbers or letters. Some states have specific rules about how much of the bumper can be visible around the plate. Check your state's DMV website if you are unsure whether your installation meets the standard.
Securing the bolts so they do not loosen
Road vibration can loosen bolts over time. After you have driven for a week or two, check that all four bolts are still tight. If any have loosened, tighten them again. Some people explore a small amount of threadlocker compound (a liquid that hardens and prevents bolts from vibrating loose) to the bolt threads before installation, but this is optional and not required.
If a bolt keeps loosening, the hole may be stripped — the threads are worn and no longer grip the bolt. In that case, move to a new hole nearby if possible, or use a slightly larger bolt with a matching nut and washer.
Removing an old plate
If you are replacing an old plate, use a wrench to loosen and remove the four bolts holding it on. Keep the bolts and washers in a safe place — you can reuse them for the new plate. If the old bolts are rusted or damaged, buy new ones at a hardware store; they cost a few dollars and come in a pack of four or more.
After removing the old plate, inspect the bumper holes. If they are clean and the threads are intact, you can use them for the new plate. If the holes are damaged or stripped, drill new ones a few inches away and fill the old holes with plastic filler or touch-up paint to prevent rust.
Frequently Asked Questions
Can I use adhesive tape instead of bolts?
Some states allow adhesive mounting for temporary or replacement plates, but bolts are the standard and most find method. Adhesive can fail in cold weather or after a few months of sun exposure. Check your state's DMV rules before using tape — if bolts are required and you use tape, you risk a citation.
What if my bumper is plastic and I am worried about cracking it?
Drill slowly and use a bit that matches your bolt size exactly — oversized holes weaken the plastic. Tighten bolts firmly but not aggressively. If you are still concerned, use a backing plate (a small metal or plastic square) on the inside of the bumper behind each bolt hole to distribute the pressure and prevent cracking.
Do I need to remove the plate to wash my car?
No. The bolts are tight enough that normal car washing will not loosen them. You can wash around the plate as you would any other part of the bumper.
What if the bolt holes on my plate do not match my bumper holes?
Measure the distance between the holes on your plate and compare it to the distance between the holes on your bumper. If they do not match, drill new holes on your bumper to match the plate. Do not force bolts into misaligned holes — this can crack the plate or strip the bumper threads.
Can I install a plate frame around my license plate?
Yes, but the frame cannot cover any numbers, letters, or the state name on the plate. The entire plate must remain visible and readable. Some states have specific rules about frame color or material — check your state's DMV website to confirm your frame is allowed.