ehall

Ok I don't know jack about body work. What exactly do they do when they "roll" the fenders? TIA E

Danno

Look at the fender lip and there's an 10mm edge that protrudes inwards. The idea is to bend this lip upwards to make more room. However, due to the thickness of the material, especially in the corner, it's impossible to flip it up fully 90-degrees to be flush with the outer fender without flairing out the fender itself. This is not a bad thing if you want a flared lip. But I find that to get maximum clearance with the lip completely folded up and parallel with the outer fender, you have to trim and crimp and grind, rolling won't do it.

FWIW, I'm running 17x10.5/11.5" wheels with 255/275mm tyres. Front has no issues other than rubbing on the brake-hose bracket at full-lock. I just Dremel off the 1/4" of the corner of that tab and bent it upwards a bit. On the rear, the tyre's outer sidwall and inner tread-corner will rub when bottoming the suspension travel, but that's about it. The trick is to get the offsets just right, just add +10mm to the stock offset (except for TurboS which should keep the same offsets)

Matt H

On stock Porsche wheels (7"-7.5" front 8.5-9.0" rear) the best setup is 225/45R17 and 255/40R17. If you use the other models front 205/50R17 I find the understeer to be too much.
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Sydbom

i have 255 in the back and i am amazed how you can have those kind of fat wheels in front! and 275 in the rear to!
do any of you have pics of that? must look really fat and nice!

Regards
Sydbom

951 -86 owner ( since dec -04 )

KuHL 951

275/255-40-17 and they fit just fine.

pk951

KuHL 951

275/255-40-17 and they fit just fine

What is the off-set on those wheels you have?

KuHL 951

I wish I knew myself. CCW measures their wheels in backspacing rather than offset. They are 6.75" backspace for both of them. I guess you can do the math if you want; they are 9" and 10". They were a direct swap for MM 993 Cups. I still have room in the rear for a 1/4" spacer but didn't feel it was needed.

Steve