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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHas anyone gone from 265/35-18 to 285/30-18's ?
Leading reported evidence
Check 285's cost more, as much as $30/tire
Performed · outcome unconfirmed
No successful repair reported for this finding.
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1
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Performed · outcome unconfirmed
Not to mention, last time I checked, 285's cost more, as much as $30/tire.
Leading evidence: 'Check 285's cost more, as much as $30/tire' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check 285's cost more, as much as $30/tire' (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.
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Replaced the 265's right after I bought the car, so I can't really compare.
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Thinking about going back to 265's for my next set because they discontinued the tire I'm using (S-03).
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.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Performed · outcome unconfirmed
Thinking about going back to 265's for my next set because they discontinued the tire I'm using (S-03).
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11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a 99 C4. OEM tires were 265/35-18 on the rear. I am thinking about going to 285/30-18. Has anyone done this? Would I have any problems doing this?
thanks
Um, smaller diameter = wheel spins more to cover same amount of ground = speedo reads FASTER. IIRC it was something like 1-2% faster, there's a link to a webtool somewhere in this forum...
I went from 265's to 285's with no problems. Speedo reads fast anyway. Replaced the 265's right after I bought the car, so I can't really compare. Thinking about going back to 265's for my next set because they discontinued the tire I'm using (S-03). I'm thinking about the n-rated Michelin PS2 but you can't buy it in 285's.
You can feel it in spirited driving on the street.
These cars are set up from the factory with moderate {substantial, in my opinion) understeer.
Many here (as have I) have changed out their suspensions to reduce understeer, increase roll stiffness, and improve handling. And many of us reduce rear tire pressures to further help balance the car.
If you autocross or track these cars, understeer is a killer.
Why put a larger rear tire on a car whose rear grip already substantially exceeds the front grip?
It doesn't make sense.
Not to mention, last time I checked, 285's cost more, as much as $30/tire.
This is a source reference. Confirm exact model applicability in the original material.
