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YOUR RESEARCHPilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
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Run 245s
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Quite a few of us are running 245s on 19" 8.5j rims on 997s (on which 235 is the factory spec - and before someone chimes in with a does of holier than thou : yes my insurance company are aware I am running non-standard tyre sizes) to get a more positive turn in.
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
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Leading evidence: 'Run 245s' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check before you go down this path' (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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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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Performed · outcome unconfirmed
Quite a few of us are running 245s on 19" 8.5j rims on 997s (on which 235 is the factory spec - and before someone chimes in with a does of holier than thou : yes my insurance company are aware I am running non-standard tyre sizes) to get a more positive turn in.
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
Check before you go down this path
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No successful repair reported for this finding.
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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.
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Suggestion
Don't quote me but was told your warranty is nil and void if you fit this tyre .I would check before you go down this path .
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
Check with your dealer
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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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Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
Replace stock pirelli p zero
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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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Suggestion
I am also considering these tyres to replace the stock Pirelli P Zero that came on my car.
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
Run 245s
No successful repair reported for this finding.
0
Reported fixes
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Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
Quite a few of us are running 245s on 19" 8.5j rims on 997s (on which 235 is the factory spec - and before someone chimes in with a does of holier than thou : yes my insurance company are aware I am running non-standard tyre sizes) to get a more positive turn in.
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
Run non-standard tyre sizes)
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
Quite a few of us are running 245s on 19" 8.5j rims on 997s (on which 235 is the factory spec - and before someone chimes in with a does of holier than thou : yes my insurance company are aware I am running non-standard tyre sizes) to get a more positive turn in.
Pilot Cup 2's on a 981 ? - Page 1 - Boxster/Cayman - PistonHeads UK
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18 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 1 discussions
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Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Would like to try Michelin Pilot Cup 2's on a 981 Cayman S, the rear tyre sizes are no problem but the fronts are standard fit 235/35 ZR 20, and the nearest Pilot Cup 2 is a 245/35 ZR 20, has anyone fitted them, does anyone have any views please ?
I was also thinking about going for Pilot Cup 2's when my P-Zeros reach the end of the road. But I am kinda nervous about putting 245/35 20's on a wheel designed for 235/35 20. Any other views on this? Otherwise am I correct that most people go for Michelin Pilot Super Sports?
What is all this stuff about N-rating and all of that? Is that just BS from Porsche or is there really any tangible difference besides dealer attitude to warranty and trade in value? It sounds like a blatant attempt by Porsche and the tyre manufacturers to price segment the market for functionally identical tyres and to lock out competition from discount tyre retailers.
Thanks for any thoughts / insights.
Don't quote me but was told your warranty is nil and void if you fit this tyre .I would check before you go down this path . I have Pilot Sport on the Spyder as fitted at the factory but heard the Cup 2 is a far superior tyre
woodysnr said:
Don't quote me but was told your warranty is nil and void if you fit this tyre .I would check before you go down this path . I have Pilot Sport on the Spyder as fitted at the factory but heard the Cup 2 is a far superior tyre
I would definitely check with your dealer. Fitting slicks is always a "you are on your own" deal, but Pilot Cup 2s are in a gray area. At the very least, a 981 would likely need changes to prevent fuel starvation, changes to prevent oil starvation, probably new wheel bearings, and probably better control arms.
woodysnr said:
...heard the Cup 2 is a far superior tyre
Different rathe than superior I'd say. They have different strengths and weaknesses but both are great.
SimonOcean said:
But I am kinda nervous about putting 245/35 20's on a wheel designed for 235/35 20. Any other views on this?
Don't be nervous - it isn't an issue, certainly as far as fit is concerned. Quite a few of us are running 245s on 19" 8.5j rims on 997s (on which 235 is the factory spec - and before someone chimes in with a does of holier than thou : yes my insurance company are aware I am running non-standard tyre sizes) to get a more positive turn in. Assuming that your geo isn't overly exotic then the only effect will be to shift the balance of grip slightly forward. That said - the effect will be more pronounced on a 981 than it does on a rear engined car, but I would still expect the outcome to be favourable.
Hi, picking up on this old thread as I've just come back from Spa where my car felt very under-tyred. Did anyone go for the PSC2 on their 20" Boxster 981 in the end? I am also considering these tyres to replace the stock Pirelli P Zero that came on my car. But like the OP I'm concerned that the C2 front tyre will be 245/35 when the original tyre is a 235/35. I've also heard that to run the C2 I may need to move to negative camber (as far as it will go on PASM). Any thoughts? I'm also looking at the Pirelli Trofeo R as I only use my Boxster for track and sunny days. Any advice welcome.
RickyAngel said:
Hi, picking up on this old thread as I've just come back from Spa where my car felt very under-tyred. Did anyone go for the PSC2 on their 20" Boxster 981 in the end? I am also considering these tyres to replace the stock Pirelli P Zero that came on my car. But like the OP I'm concerned that the C2 front tyre will be 245/35 when the original tyre is a 235/35. I've also heard that to run the C2 I may need to move to negative camber (as far as it will go on PASM). Any thoughts? I'm also looking at the Pirelli Trofeo R as I only use my Boxster for track and sunny days. Any advice welcome.
PASM has nothing to do with camber or geo !
Pirelli Trofeo R has been EU banned for road use (don't forget to vote out next month btw)
I would go Pilot SS or conti 6 or some thing.
the car don't feel under tyred on track at all, the geo is the issue.
the GT4 runs a 8.5 front wheel with 245 btw.
As above, the GT4s run 245 with 8.5" rims so fit is fine.
However, one point to note is that many GT4 drivers are finding wear roughly in the outside/centre of the front tyre...I am of the view that apart from geo, this is also due to a wide tyre which is not stretched across the rim.
...so you may get a bit more near centre wear..but if you are not a hard tracker then it may not be all that material.
The Cup 2 is inconsistent over more than 4 laps if the driver is quick. An inexperienced driver will reach that point a lot later but may not have the experience to recognise what is happening when he does and spin as a result. They go off much like the Toyo. The Original Cup 1 is a more consistent tyre.
Steve Rance said:
The Cup 2 is inconsistent over more than 4 laps if the driver is quick. An inexperienced driver will reach that point a lot later but may not have the experience to recognise what is happening when he does and spin as a result. They go off much like the Toyo. The Original Cup 1 is a more consistent tyre.
they still do 3x as many laps as the dunlops though :-)
Porsche911R said:
they still do 3x as many laps as the dunlops though :-)
That is certainly my experience for a well setup 996 GT3
However a std GT4 driven at pace will also eat the front Cup 2 tyres. My Cup 2 fronts lasted about 2 days worth of track time - the same as a friend with similar pace on Dunlops. Both our rears were fine (though I have not checked actual rear wear differences between the two brands)
Cup2 goes off before the cup 1 ever did IME. You can still get them but they are not being made anymore AFAIK and no, they dont have the starting tread depth of the cup 2.
I find on the first couple of sessions they go off after 4 laps or so...
...however after a couple of dial downs and heat cycles they are very stable....usually (on a 6GT3) I tire (amateur level) before the tyres tire...
