I have finally narrowed down a shake in my steering wheel and bounce in my car to the 41 year old aluminum wheels. These issues, along with having to run a spacer for one of my Toyota 4x4 Calipers has led me to look for new wheels for the Z. I'm looking at the Konig Rewinds and Rota RB's but don't know what size and offset I should get to fit the car as best as possible. If anyone has upgraded to these wheels or has advise in general, I would love the feedback.