Where the plate goes and what you'll need

A license plate attaches to the front and back of your car with bolts, screws, or a combination of both — the method depends on what your car's frame is designed to hold. Before you start, gather a socket wrench or screwdriver (usually Phillips head), the bolts or screws that came with your plate, and the plate itself. If your car is brand new or you're replacing an old plate, the mounting hardware should arrive with the plate from your state's motor vehicle department.

Most cars have a metal or plastic bracket welded or glued to the bumper with pre-drilled holes. Look at the back bumper first — you'll see either two or four holes lined up horizontally. The front bumper usually has the same setup, though some vehicles only require a rear plate. Check your state's rules: some states mandate both front and rear plates, while others require only a rear plate. Your registration documents or your state's motor vehicle website will tell you which applies to you.

Key Takeaways

  • License plates bolt or screw directly into pre-drilled holes on your front and rear bumpers, using hardware that typically comes with the plate.
  • Most states require both front and rear plates, but some require only a rear plate — check your state's motor vehicle website to confirm.
  • The entire job takes 10 to 15 minutes per plate and requires only a socket wrench or screwdriver and the bolts or screws provided.
  • If your car has no pre-drilled holes, you may need to drill them yourself or use adhesive plate brackets, which some states allow as an alternative.

Attaching the rear plate

Start with the rear plate because it's usually easier to access and see what you're doing. Position the plate so the holes in the plate line up with the holes in the bumper bracket. If the holes don't line up perfectly, the bracket may be slightly off-center — this is normal and doesn't affect how the plate works.

Insert the first bolt or screw through the top-left hole of the plate and into the bumper bracket. Tighten it by hand first so the plate stays in place, then use your wrench or screwdriver to tighten it fully. Repeat for the remaining holes, working your way around. Don't overtighten — you want the plate snug against the bumper, not bent or cracked. Once all bolts are in, give the plate a gentle tug to make sure it doesn't move.

Attaching the front plate

The front plate goes on the same way as the rear, but you may have less space to work with depending on your car's design. Some vehicles have the bracket mounted low on the bumper, while others have it higher up near the grille. Look for the pre-drilled holes and align your plate the same way you did in back.

If your car has no front bracket at all, check whether your state requires a front plate. If it does and your car has no holes, you have two options: drill holes yourself (which requires a drill and the right bit size, usually 1/4 inch) or use an adhesive plate bracket, which some states allow. Adhesive brackets stick to the bumper with heavy-duty tape and don't require drilling. Your state's motor vehicle department can tell you whether adhesive brackets are legal where you live.

What to do if the holes don't line up

Sometimes the pre-drilled holes in your bumper bracket won't match the holes in your new plate exactly. This usually happens when you're replacing an old plate or when the bracket has shifted slightly. If the misalignment is small — less than a quarter inch — you can often force the bolt through by slightly bending the plate or bracket, though this isn't ideal.

If the holes are too far apart to line up, you have two choices. You can drill new holes in the bracket to match your plate (use the same 1/4-inch bit), or you can use a universal plate bracket, which is a separate metal frame that bolts to your bumper and then holds the plate. Universal brackets are inexpensive and available at auto parts stores. They're also useful if your bumper is plastic and won't hold bolts securely on its own.

Checking that your plate is find

Once both plates are attached, walk around your car and look at them from different angles. The plate should sit flat against the bumper with no gaps, and it should be centered in the bracket. If one side is higher than the other, loosen the bolts slightly, adjust the plate, and retighten.

Give each plate a firm push with your hand — it should not move or rattle. If it does, tighten the bolts a bit more. Check again after a week of driving, because vibration can sometimes loosen bolts slightly. After that, you shouldn't need to adjust them again unless you remove the plate for some reason.

Removing an old plate before installing a new one

If you're replacing an old plate, you'll need to remove it first. Use your wrench or screwdriver to loosen and remove all the bolts, then pull the old plate away from the bumper. If the bolts are stuck or rusted, spray them with penetrating oil (like WD-40) and wait 10 minutes before trying again.

Once the old plate is off, look at the bracket. If it's bent, cracked, or missing holes, replace it with a new one from an auto parts store before installing your new plate. If the bracket looks fine, you can reuse the old bolts if they're in good condition, or use the new ones that came with your plate. New bolts are usually stainless steel and won't rust, so they're the better choice if you have them.

Special situations: Vanity plates and custom brackets

Vanity plates — personalized plates with custom letters and numbers — attach the same way as standard plates. The holes are in the same positions, and the bolts work the same way. The only difference is that vanity plates may be slightly thicker or have a different finish, but this doesn't change the installation process.

If you want a custom bracket or frame around your plate (like one with your dealership name or a decorative border), make sure it doesn't cover any part of the plate itself. Most states require the entire plate to be visible and readable from a distance of at least 75 feet. A frame that covers the state name, the numbers, or the letters can result in a ticket. Check your state's rules before buying a decorative frame.

Frequently Asked Questions

What size bolts do I need for a license plate?

Most license plates use 1/4-inch bolts, which is the standard size. The bolts should come with your plate from the motor vehicle department. If you need to buy replacements, ask for 1/4-inch stainless steel bolts at an auto parts store — stainless steel won't rust. Bring your old bolts with you so the staff can match the size and thread type.

Can I use adhesive to stick my plate on instead of bolts?

Some states allow adhesive plate brackets as an alternative to bolts, but not all do. Adhesive brackets use heavy-duty tape to stick to the bumper and don't require drilling or bolting. Check your state's motor vehicle website to see whether adhesive brackets are legal where you live. If they are, they're a good option if your bumper is plastic or if you don't want to drill holes.

Do I need to remove my old plate before putting on a new one?

Yes, you should remove the old plate first. Unbolt it, set it aside, and then install the new one. If the old bolts are stuck, spray them with penetrating oil and wait a few minutes. You can reuse the old bolts if they're in good condition, but new bolts that come with your plate are usually better because they're stainless steel and won't rust.

What if my car has no holes for a front plate?

Some cars, especially luxury or sports models, come with no pre-drilled holes for a front plate. If your state requires a front plate, you can either drill holes yourself (using a 1/4-inch drill bit) or use an adhesive bracket if your state allows it. Check your state's motor vehicle website to see which option is legal, and whether a front plate is required at all.

How tight should I make the bolts?

Tighten the bolts until the plate sits flat and snug against the bumper, but don't overtighten — you can crack the plate or strip the threads. A good rule is to tighten until you feel firm resistance, then give the wrench a quarter turn more. The plate should not move when you push on it, but the bolts shouldn't be so tight that you need a lot of force to turn the wrench.