Pilot Cup 2's on a 981 ?
Discussion
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.
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.
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.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.
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 GT3However 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)
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