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If you're tracking or auto-x'ing the car hard, I wouldn't recommend spacers either. For everyday street use, good quality spacers with appropriate hardware works well enough. I wouldn't go beyond 15mm though, anything more puts too much stress on the hub assembly. I also wouldn't put spacers up front. Interestingly, if you look at Porsche's loooooong options list, they offer front and rear spacers option from the factory. Its a cost effective way to increase track width, I guess.
If you're tracking or auto-x'ing the car hard, I wouldn't recommend spacers either. For everyday street use, good quality spacers with appropriate hardware works well enough. I wouldn't go beyond 15mm though, anything more puts too much stress on the hub assembly. I also wouldn't put spacers up front.
Interestingly, if you look at Porsche's loooooong options list, they offer front and rear spacers option from the factory.
Its a cost effective way to increase track width, I guess.