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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWidest wheel and tire up front?
Leading reported evidence
Run 235/40, a 255/35 and a 265/35 up front
Performed · outcome unconfirmed
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1
Discussions
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Performed · outcome unconfirmed
I have run Corsas, RA1s, R888s and MPSCs I have run a 235/40, a 255/35 and a 265/35 up front on a custom set of 3-piece CCW Classic Racing wheels without rubbing.
Leading evidence: 'Run 235/40, a 255/35 and a 265/35 up front' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust offsets' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
I have run Corsas, RA1s, R888s and MPSCs I have run a 235/40, a 255/35 and a 265/35 up front on a custom set of 3-piece CCW Classic Racing wheels without rubbing.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
I plan on adjust the offsets to be just inside the fenders as opposed to the stock very tucked in look.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
Can you recommend offsets hthat are known to work?
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Suggestion
I you have solid lower control arm bushings and monball uppers you can run a 10 with a 255.
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Performed · outcome unconfirmed
I have run Corsas, RA1s, R888s and MPSCs I have run a 235/40, a 255/35 and a 265/35 up front on a custom set of 3-piece CCW Classic Racing wheels without rubbing.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I'm sure I could run a 9' on the same tire and not have any different clearance issues as the tire is wider than the wheel by a good bit (I just had access to cheap 8.5' wheels so I went for it)...but without going to a 2.25' spring on my coilovers, or raising the car even more I'm about as big as I can get for front tire currently.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I have run Corsas, RA1s, R888s and MPSCs I have run a 235/40, a 255/35 and a 265/35 up front on a custom set of 3-piece CCW Classic Racing wheels without rubbing.
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6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T013556Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi everyone,
Just got a 2000 C2 996 recently and was thinking of taking it to the track and to autox. Can some of you more knowledgeable folks tell me what works up front? The 7.5s and 8s from factory seem really skinny? Any way to get a 9 or a 10" wide wheel up front with a lot of sticky rubber?
TIA
Andy
9's and 10's on the front have been done but you have to pay really close attention to wheel offset, spring diameter, ride height, tire size, and negative camber values.
Audi,
Thanks. I am planning to put in an after market susp either the JRZ or KW Variant 3 and in doing so try to dial in a lot more negative camber.
Good to hear that a 9 or 10 will fit. So is it safe to think that a 9 with a 255 or a 10 with a 275 is the way to go? I plan on adjust the offsets to be just inside the fenders as opposed to the stock very tucked in look.
search for NJ-GT on the 996 GT3 forum. He's run 10's with 275's on the front of his GT3.
The GT3 coilovers as well as JRZ's, Motons, PSS9's all use 2.25' springs which helps with inner clearance. My coilovers (H&R Clubsports) have a slight barrel shape to the front springs which limits me somewhat on inner clearance and hinders overall tire size that I can run. Also the lower you go in the front you can start running into outer clearance issues with the fender as well.
My track setup is an 8.5' front wheel with a 255 tire. I'm sure I could run a 9' on the same tire and not have any different clearance issues as the tire is wider than the wheel by a good bit (I just had access to cheap 8.5' wheels so I went for it)...but without going to a 2.25' spring on my coilovers, or raising the car even more I'm about as big as I can get for front tire currently.
Andy
A wider tire does not increase contact patch or increase grip. A 235/40 and a 265/35 both mounted on a 9.0" wheel with 35 psi of pressure will have the same contact patch area. The shape of the contact patch will be differnt though. With the narrower tire it will be more narrow, but longer. The only way to gain contact patch and ultimately grip is to reduce tire pressure, which increases sidewall flex reducing turn-in and response. It is always best to run a tire at close to or the maximum rim width it is designed to run. This is most critical in Autcrossing where you need the best response possible.
I have run Corsas, RA1s, R888s and MPSCs I have run a 235/40, a 255/35 and a 265/35 up front on a custom set of 3-piece CCW Classic Racing wheels without rubbing. So what works best? Consistantly 235/40's. A 9" wheel is about the limit for this tire, but I can run 5-7 psi lower pressure than with a 255 for the same tire roll. The the car at -2.2 front camber wears dead even on 235's, but gets camber wear with 255s. With the 235, since I can run lower pressure I get the big benefit of a larger contact patch that goes with it.
So what are the limits? It depends on how your car is setup. Are you still running stock control arms and pillow mounts? If so, the limit is a 9.5" wheel and a 245 tire. I you have solid lower control arm bushings and monball uppers you can run a 10 with a 255.
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