6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWider tires
Leading reported evidence
Replace equation a little bit
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
Of course with spacers that changes the equation a little bit.
Leading evidence: 'Replace equation a little bit' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace equation a little bit' (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
It will change the shape, but not change the size of it.
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.
Run 235/40/18 in the front and 295/30/18 in the rear
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
Ideally, I could run 235/40/18 in the front and 295/30/18 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
Start by maxing the camber in front and running a half degree more than this out back.
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.
6 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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a 02 996 coupe w/ 18 inch 5 spokes, & ROW M030. Currently Stock contis 225/285. Can I fit 245's on front to reduce understeer w/out rubbing issues. Is this a good Idea? Also, any benefit to add GT3 Sways?
I do both autocross & DE
Thanks
Here's a
thread
on RennTech (read Loren's post) that should answer most your questions relating to tire sizing.
As far as the GT-3 rear bar, heck ya!. I found it to be a great tuning aid.
Nice link. I'm still a little confused at how much space is available in the front and rear with regard to fender clearance and spacers. Ideally, I could run 235/40/18 in the front and 295/30/18 in the rear. I think that is the GT3 tire size. Of course with spacers that changes the equation a little bit.
David, you won't get the benefit you are looking for because just going to a larger tire isn't going to increase the contact patch. It will change the shape, but not change the size of it. It also will not change the weight transfer. Actually, this move would make your problem worse. This is because the extra sidewall width will allow the contact patch to shift more on turn-in making turn-in slower.
Since you are running a ROW M030, providing you are running the right version for your car then the car should be extremely neutral. The ROW M030 increases the rear sway bar stiffness greater than the front and the rear spring rate and dampening increase around 25%. There are 2 areas you need to improve before adding suspension parts: alignment and tires. What kind of alignment are you running? Start by maxing the camber in front and running a half degree more than this out back. The Contis are the lowest grip of the OEM N rated tries. They are not very well suited to either of the tasks you are looking for them to perform. With DEs and Autocrosses you should be looking to move up to a set of R compound tires. This will improve not only the feel of the car, but also your times substantually.
996, if you are looking to run wider tires then you should be running wider wheels. A 295/30 is designed to run a 10.5-11.5" wheel. Considering the number of wheel manufacturers who make wheels in wider sizes for this car, you just need to get a set with the right offset. There should be no need to run wheel spacers.
Thanks for the input, however, I have heard from more than one enthusiest on this forum that there is a benefit to increasing the width of the front tire, at least to a 235 (which can easily fit on an 8" rim. It is tough to judge, apparently, many have this type of configuration and are expressing some benefit.(better times etc)
One variable that was left out of the contact patch description is tire pressure. If you can lower the tire pressure (which should increase the contact patch area to some degree) versus the narrower tire to an extent that doesn't adversely effect the extent of sidewall flex than you would get an improvement of grip most likely. In a pure physics sense the dynamic 02 Carrera is describing is right on, but tires aren't symmetrically elastic like balloons. There was a previous thread on this specific topic that was very interesting.
This is a source reference. Confirm exact model applicability in the original material.
