What size Twist wheels fit best?
 

I've been looking around for a used set of Porsche 18" twist wheels and tires lately that I would like to put on my 03 S. But there are a slew of different sizes I've been running into. So now I'm sort of confused :confused:

What is the most optimal size 18" twist wheels and tires I should be looking for? I will be lowering the car with Eibach or H&R springs eventually.

- Front and rear wheel widths?
- Front and rear offsets?
- Front and rear tire sizes?
- What front and rear spacers needed (if necessary) to make the wheel/tire flush with the fender?

Thanks for the replies.

Will these work?

Front - 8Jx18 ET52 part# 993 362 136 01
Rear - 10Jx18 ET40 part# 993 362 140 03

Tire sizes are 225/40 in the front and 285/30 in the rear.

The short answer is yes . However, I would not opt for those tire sizes . In opinion, 285 is is unnecessarily wide for general "street" set-up. Moreover, it is my feeling that the drastic different in tire size between 225 and 285 would not make for a very good balance with regard to understeer and oversteer .

Simply put, based on your choice of wheels, the lower the offset, the better the fitment will be for your vehicle . If you're beholden to the turbo twist wheel, the following guidelines may help you decide on how to augment the fitment .

8 X 18 - bringing the offset down to around +40 or so will likely give you the look that you are going for .

10 x 18 - bring the offset down to at least +45 to 40 will achieve the same .

Thanks Johnny for the reply!

From your recommendation, the rear offset is ok. For the front, would a 10-12mm spacer need extended lugs?

I was reading other threads and it seems like most people are running 265/35/18 in the rear. Is this a better combination with the front 225 wide tire?

Yes, you will definitely need longer lugs bolts . Keep this equation in mind:
oem standard lug bolt length 28 mm's + the size (meaning thickness) of the spacer = the length of the lug bolt needed . As far as tires are concerned, in my opinion, 225 & 265 would make for a better balance .