The full review
Why not foam and deadener
You can put deadener on the back of the plate, but I'd skip the foam layer. The butyl is fine, but foam holds water and dirt and turns into a nasty sponge over time. The easiest fix that actually lasts is a silicone license plate frame, it cushions the plate on all sides so it stops buzzing against the car.
If you still get a little noise after that, a couple of small rubber washers under the screws usually finishes it off.
What I liked
- Cushions the plate and kills the buzz
- Silicone won't rot or hold water like foam
- Cheap and installs in minutes
- Weatherproof with drainage, no trapped water
What to know
- Very loud rattles may need rubber washers too
- Plain look, it's a functional frame
- Won't fix a bent plate
- Check it clears your plate light
Common questions
Foam behind the plate or a silicone frame?
Skip the foam, it turns into a wet sponge. A silicone frame cushions all sides and lasts.
Still rattles after the frame?
Add a couple of small rubber washers under the mounting screws, that usually finishes it.
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Hands-on review by Johnny Alto · Published July 20, 2026