These metal caps may look cute, but if you get salt on the road they will stick to the tyre. Drop it in a second. You will never be able to remove the cover without damaging something. When I tried to remove one, the threaded end of the stem broke off because it had fused to the inside of the cap, making it impossible to inflate or close the tire. I have two tires left. I cross my fingers It costs hundreds of dollars to repair each tire because the tire pressure sensor fails along with the stem. I just can't believe they're allowed to be sold. Such a shame.