YOUR RESEARCHTire Size
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Read captured repliesInsufficient extracted evidence does not mean there is no answer in the original discussions.
1 matching discussions · 6 captured posts examined · 0 partial discussions
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.
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: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I'm looking at tires for my 996 Turbo and what I'm finding are the OEM size tires really vary in diameter, some more than others. With all wheel drive what is the max difference in diameter you have found that didn�t affect the drive train or PSM.
Porsche says you should be inside a max delta of 3% in rolling diameter. There are many websites that will compute this for you as well. Sorry, I am not on my usual computer so I don't have the links to give you. If nobody has posted anything by the time I get back to my computer I will post them.
Thanks I'll see what Google finds also
I prefer this one: http://www.1010tires.com/TireSizeCal...?action=submit
If you are just getting tires for OE wheels.........don't worry about tire maker 'diameter' numbers. Just shop for PS, PS2, Conti, etc in 225/40 and 295/30........they'll all be close enough.
Thanks to all, including "offroad911" for your help, this is a great place for us new owners
This is a source reference. Confirm exact model applicability in the original material.
