11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRear tire size on stock 18" twist
Leading reported evidence
Check tirerack and it shows
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 · Original poster
I was checking tirerack and it shows that the 285/35 is .5" bigger in diameter than the 265/35.
Leading evidence: 'Check tirerack and it shows' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check tirerack and it shows' (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 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
The 35 aspect ratio is outside the +/- 3% diameter of the original OEM tire that most tire sites recommend not to exceed.
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 know the 285/35 are not the recommended size but I would think that they would be nicer on rough roads????
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
Also your car will have more understeer....I hated the way my car handled with the 285 on the rear....I have a C4 so it may be a bit different with a C2....now I have 19's with 295's and its NICE....but my fronts are also different.....so go figure....just realize you will be changing your handling as well when going from 265 to 285 in the rear...
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 · Original poster
I am still debating to change the tiresize up or not.
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
Also your car will have more understeer....I hated the way my car handled with the 285 on the rear....I have a C4 so it may be a bit different with a C2....now I have 19's with 295's and its NICE....but my fronts are also different.....so go figure....just realize you will be changing your handling as well when going from 265 to 285 in the rear...
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.
11 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: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The OEM size for '02 - '04 is 285/30/18. I am cureently running 295/30/18. The 35 aspect ratio is outside the +/- 3% diameter of the original OEM tire that most tire sites recommend not to exceed. A 285/30/18 would be OK though.
While the 285/35/18 will fit, it is not recommended. Check out the link below and play some "what if" sized and see the results.
http://www.1010tires.com/TireSizeCal...?action=submit
Thanks guys! I was checking tirerack and it shows that the 285/35 is .5" bigger in diameter than the 265/35.
gota911, that link you provided is great! I am still debating to change the tiresize up or not. Only reason I am stuck with 285/35/18 is because I have a set of brand new Perelli Pzero tires.
I fall into the same camp. I know the 285/35 are not the recommended size but I would think that they would be nicer on rough roads???? I too have been looking at going with a 225/40 front and a 285/35 in the rear. I know it will work but do I want it to work is the question.
vwrado - your initial post said you had 265/
40
/18, not 265/35/18. While the 285/35/18 will fit and function properly, just be aware that your speedometer will be a little "off" from the actual speed you are traveling. You can get the exact variance from the tire calculator I listed earlier.
Opps, that was a typo. I have the stock size of 265/35/18.
Using that calculator, it shows that I will be 2-3mph off. I am still deciding to do this size or not.
Also your car will have more understeer....I hated the way my car handled with the 285 on the rear....I have a C4 so it may be a bit different with a C2....now I have 19's with 295's and its NICE....but my fronts are also different.....so go figure....just realize you will be changing your handling as well when going from 265 to 285 in the rear...
I believe most Porsche speedos read 2-3 mph over the actual speed anyway, so going to a slightly larger diameter tire may allow your speedo to display the actual speed.
