15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWhat are the stock Tire Size for the Mk1 996 with 18" Wheels?
Leading reported evidence
Run 235/40-18 (25.4 in
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
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.
What are the stock Tire Size for the Mk1 996 with 18" Wheels?
Read full discussion summary
Leading evidence: 'Run 235/40-18 (25.4 in' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend 285/295 as the best fit' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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.
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 run 265/35/R18 Bridgestone Potenzas on the rear and 125/40/R18 on the front on my ‘99 C2.
What are the stock Tire Size for the Mk1 996 with 18" Wheels?
Recommend 285/295 as the best fit
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
Discussions that contain suggestions
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.
Suggestion
I did a little searching and some non-porsche sites recommended 285/295 as the best fit on 11" wheels with 305 being the max.
What are the stock Tire Size for the Mk1 996 with 18" Wheels?
Replace current 225/40r18 and 265/40r18
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
Discussions that contain suggestions
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.
Suggestion
I'm preparing to replace my current 225/40R18 and 265/40R18 on my car.
What are the stock Tire Size for the Mk1 996 with 18" Wheels?
Run et65 and et50 rear wheel, i'm also lowered 1"
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
Discussions that contain suggestions
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.
Suggestion
I've run both et65 and et50 rear wheel, I'm also lowered 1".
What are the stock Tire Size for the Mk1 996 with 18" Wheels?
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I am going to buy some Michelin Pilot Sport 4S for the car.....tire rack has a $100 rebate right now for four of them. I was going to pull the trigger, but then I was thinking 265 on the rears were not correct. It says the OEM tire size is 265/35/18. Then I go to discounttire.com and it shows 285/30/18 is the OEM tire size.
The 285/30/18 is right size, correct?
I know the front is 225/40/18 is the correct size. Thanks!
The 265/35R18 is the correct size for a 1999 C2. A 285/30R18 will fit a 10" wide wheel so you should be able to use it with no issues,
bear in mind the 285 is about a .5" shorter in height and your speedo will be off about 2 mph.
The only problem with the 285 is that they are not available in the Pilot Sport 4S in the correct size.
I am away on business.....going to see what size I have installed on my rears tomorrow when I get home.
I run 265/35/R18 Bridgestone Potenzas on the rear and 125/40/R18 on the front on my ‘99 C2. Softer tire, smoother ride and last longer than the 7k miles I was getting out of the original Conti tires.
Can you go with 315 on the 11" GT3 wheels? I did a little searching and some non-porsche sites recommended 285/295 as the best fit on 11" wheels with 305 being the max.
315 will physically fit on the rim but clearing everything takes a pretty specific offset on the rim and fender rolling on a narrow body. On a wide body its easier. I have 63mm offset holly twists on mine with a 295 tire. Most likely going to a 305. The other issue i have is the car is lowered close to 1.5" this complicates things and forces me to have 1.5-2.5* of camber to tuck everything in.
I am running 235/40-18 (25.4 in. OD) on the front and 285/35-18 (25.9 in OD) on the rear. M. Pilot Sport 4S on my C4. This is less than a 2% difference between front and rear. If I remember, the Lore says less than 4% is OK.
Regards,
Lang G
I have 315/25/19 rears, I have ZERO rub on a 19x11. I've run both et65 and et50 rear wheel, I'm also lowered 1". Both scenarios did not rub. You could easily fit 315/30/18 on an 18x11 rear, especially MKII.
Bumping this one back up. Picked up some MY02 5 spokes stock tire size is
285/30/18. Anyone fit a 265/35/18 on the 5 spokes? I prefer the narrower tire as I like to feel the car move around and actually don't it to be super planted.
Any feedback?
Just doing some comparison of sizes and I'm wondering if anyone has tried 235/40R18 Front and 265/35R18 Rear on Turbo Twists.
The Revolutions per mile are within .4% and, from what I can ascertain, will actually help speedo accuracy.
I'm preparing to replace my current 225/40R18 and 265/40R18 on my car.
Thanks in Advance
This is a source reference. Confirm exact model applicability in the original material.