Where the plate goes and what you'll need

Your license plate mounts to the front and back of your vehicle using bolts, a bracket, and fasteners — usually supplied with the plate itself or available at any hardware store for a few dollars. Most states require both a front and rear plate; a handful allow rear-only mounting. The exact location depends on your vehicle's design, but the plate must be clearly visible, unobstructed, and readable from a distance of at least 75 feet.

Before you start, gather a drill (if your vehicle has no existing holes), a socket wrench or adjustable wrench, bolts sized to fit your bracket (typically 1/4-inch), and the mounting bracket that came with your plate or that you purchased separately. If your vehicle already has bolt holes from a previous owner's plate, you can reuse them. If not, you'll need to drill new ones — this is the step that makes most people hesitate, but it's straightforward and permanent only if you measure twice.

Key Takeaways

  • License plates mount with bolts through a bracket, and most states require both front and rear plates positioned where they're clearly readable.
  • If your vehicle has no existing bolt holes, you'll need to drill them yourself — measure the distance between the holes on your plate first, then mark and drill on your vehicle.
  • Use stainless steel or corrosion-resistant bolts to prevent rust, and tighten them firmly but not so hard that you crack the plate.
  • Some vehicles have a designated mounting area molded into the bumper or frame; check your owner's manual or look at the vehicle's design before drilling.

Measuring and marking the bolt holes

Lay your license plate flat on a work surface and measure the distance between the two bolt holes — this is usually 11 inches for standard U.S. plates, but measure yours to be certain. Write down the measurement. Now position the plate on your vehicle's bumper or frame where it will sit permanently, centered and level. Use a pencil or marker to mark the two bolt hole locations directly on the vehicle.

Step back and look at the marks. They should be symmetrical, level, and positioned so the plate sits flat against the bumper without tilting. If the marks look off, erase them and reposition. This is the moment to get it right — once you drill, the holes are there. If your vehicle has a molded mounting area (a recessed section on the bumper designed to hold a plate), use that area and mark within it.

Drilling the holes (if needed)

If your vehicle already has bolt holes from a previous plate, skip this section. If you're drilling for the first time, use a drill bit slightly smaller than your bolt diameter — typically a 13/64-inch bit for a 1/4-inch bolt. Drill slowly and steadily at each marked location, keeping the drill perpendicular to the bumper. Plastic bumpers require less pressure than metal; let the drill do the work rather than forcing it.

After drilling, check that the holes go all the way through and that there are no sharp edges on the back side. If the bumper is plastic and the holes have rough edges, smooth them lightly with sandpaper or a file. Wipe away any plastic shavings or dust. If you've drilled into metal, the same applies — smooth any burrs so the bolts sit flush.

Attaching the bracket and plate

Slide the mounting bracket through the bolt holes on the back of your license plate. Position the bracket so it's centered and the plate sits flat. Insert the bolts through the bracket and the holes in your vehicle, then thread the nuts onto the bolts from behind (or use bolts with built-in washers and nuts, which are easier). Tighten the bolts firmly with a wrench, but do not over-tighten — you want them snug enough that the plate doesn't move, but not so tight that you crack the plastic plate or strip the threads.

A good test: once tightened, try to wiggle the plate by hand. It should not move at all. If it does, tighten the bolts another quarter-turn. If the plate cracks or the bolt spins without tightening, stop and replace the bolt or bracket. Use stainless steel or galvanized bolts rather than plain steel — they resist rust and will last longer, especially in wet climates.

Positioning for front and rear plates

The rear plate typically goes on the bumper or trunk lid, centered and as low as practical without touching the ground or being obscured by a trailer hitch. The front plate goes on the front bumper in the same centered, level position. Some vehicles have a dedicated mounting area on the front bumper — a recessed section or pre-drilled holes — which makes the job simpler. Check your owner's manual or look at the bumper design to see if yours does.

If your state allows rear-only mounting (check your state's DMV website), you can skip the front plate entirely. Some drivers in those states choose to install a front plate anyway for consistency or to protect the bumper from minor impacts. The choice is yours, but if your state requires both, both must be mounted and visible.

Securing the plate against theft

Standard bolts can be removed with a wrench, so if you're in an area with plate theft, consider using security bolts — bolts with a special head that requires a unique tool to remove. These cost a few dollars more but make it much harder for someone to steal your plate. You can buy security bolt kits at auto parts stores; they come with the bolts and the removal tool, which you keep in your vehicle.

Alternatively, some drivers use a plate frame with a locking mechanism, though these are less common. The simplest approach is to park in a garage or well-lit area when possible, and to report a stolen plate to your local police and DMV when ready — a thief may use your plate to commit other crimes, and you want a record that it was stolen.

Troubleshooting common problems

If the plate sits at an angle after mounting, the bolt holes on your vehicle are not level or not the correct distance apart. Loosen the bolts, adjust the plate, and retighten. If the holes are too far apart or too close, you may need to drill new holes slightly offset from the originals — mark carefully before drilling again.

If a bolt keeps spinning and won't tighten, the hole may be stripped or the bolt may be the wrong size. Remove the bolt, inspect the hole, and try a slightly larger bolt if the hole is stripped. If the bolt is the right size but still spins, the hole may be damaged; you can drill a new hole nearby and use that instead.

If the plate cracks during mounting, stop when ready and replace it. Continuing to tighten will only make the crack worse. Order a replacement plate from your state's DMV — the cost varies by state but is usually $5 to $15.

Frequently Asked Questions

Do I need to drill holes or can I use adhesive strips?

Adhesive strips are not legal for license plates in any U.S. state — plates must be bolted. Adhesive alone is not find enough and can fail in rain or heat. Always use bolts and a bracket.

What size bolts do I need?

Standard U.S. license plates use 1/4-inch bolts, typically 1 to 1.5 inches long. Measure the thickness of your bumper and add the bracket thickness to determine the correct length. Most hardware stores can help you match the size if you bring the bracket or plate with you.

Can I mount a plate without drilling if my vehicle has no existing holes?

No — plates must be bolted. If you're uncomfortable drilling, an auto shop or tire store can mount the plate for you for a small fee, usually $10 to $20.

What if my bumper is plastic and I'm worried about cracking it?

Plastic bumpers are designed to have holes drilled in them and are more flexible than metal, so they're actually less likely to crack. Drill slowly, use a bit slightly smaller than your bolt, and avoid over-tightening the bolts. If you're still concerned, an auto shop can do it safely.

Do I need to remove the old plate before mounting the new one?

Yes — remove the old plate and bolts first, then clean the area. If the old bolt holes are in good condition and the correct distance apart, you can reuse them. If not, drill new ones nearby.