looked thru the old posts and i'm still confused on offsets. I have a 2000 c2 convertible NB and am looking at putting a set of oem turbo twists that are 8x18 offset 50 (front) and 11x18 offset 45 (rear). will these fit? do I need spacers? the rear fenders have been rolled by a po. help

 

No they won't fit...Spacers will make it worse.

 

Factory fitment for your car (and mine ;-) is 18x8 front, 50 offset; 18x10 rear, 65 offset. There is a wheel fit chart here that may help:

http://www.alloywheelsdirect.net/inf..._chart/porsche

It also makes a difference whether you are on stock or lowered suspension.

 

I run that size wheel on my car and its a narrow body. You will have to run a 275/285 depending on the roll and -2.5 degrees of camber. Your call if you want to go that route. I like it but you will eat tires quicker.

search my threads i made for pictures

 

thanks, the chart helps a lot.