You must run at least 1/4" spacers to clear the front hub studs/nuts with the wheel itself. You could run the convex caps at that point (good luck finding them, hahah). I also have options that would allow you to run a custom center cap with the 1/4" slip-on spacers.i am looking to purchase a set of RW. do i absolutely have to run spaces for them to fit on the vehicle? It seems like I do only if I don't want to use the convex center cap, would that be true?
To run the normal 'flat' caps (also, good luck finding those too...), you need at least 1" hub-centric spacers. That's what I've got on my truck.