You need at least 8 cansyal go too much then.
we've done 2 cans for 4 wheels. with 2-3 coats.
i mean this shits going to peel if you hit sometihng... its liquid plastic. its made to peel off to not ruin the finish,so yes if you curb your wheel in a drivethru the plastidip is going to come off even with mad layers.