If you run a hubcentric bolt on spacer that is 30mm, the studs will sit flush with the spacer it self. So you won't run into any problems with wheels that have a flat center piece.

This generally applies to cheaper wheels though, like your Rotas and what not.

Most decent Jap wheels have cut aways as Alex has shown. Even factory GTR wheels have it

Spacers are great. You get to cheat by buying cheap wheels with weak offset.
Not only do they poke but they clear bigger brakes, gives more track and is good for when you modify your steering for MOARRR lock.


Wish I discovered bolt ons earlier. Spent months looking for the right offset wheels! Gawd some of the prices were silly.