Just received a magazine from Porsche I guess, called Christophorus. In it there is an article detailing some points about tires and it warns to not mix tires of different specifications or manufacture. My car has Continental SportContact on the front and SportContact II on the rear. N1 front, N2 rear. As I read the article this is not correct and it says driving performance may vary significantly. Both are 18" and in this chart the SportContact is listed as only 16". So am I mixed up to a point I should be considering a change to make the specification match? How did I end up mismatched anyway if this is a known issue I wonder? I purchased the car used this last year and these tires (in new condition) were on the car. Is this widely known and I am the last to know? Thanks, Bill
Discussion summary
YOUR RESEARCHMix of N1 and N2
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 · 4 captured posts examined · 0 partial discussions
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.
4 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: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Porsche's warnings are, in a way, extreme for those who drive their cars near the limit. It is OK to mix N numbers but I wouldn't mix tires of a completely different tread.
Bridgestone just paid to take off my new SO2 (non-pole position) tires as they couldnt find matching N front and rears...my 01 911 C4 Coupe was having severe noise and wobbles due to the different compounds (n). No I have Toyo, huge problems.
I have the exact setup you have and have not noticed any difference in handling on the street, normal to aggressive driving of course. I switched the rears to Conti II's because the original Sport Contacts were wearing so fast. The II's have a higher wear rating.
This is a source reference. Confirm exact model applicability in the original material.