A very subjective PS4S v. PS Cup2 comparison
Discussion
I'm sure there will be plenty of thoughts on this ... I was at Donington last week and Spa a few weeks ago on PS4S ...though through the warm months I run Cup2's on my 991.2 GT3RS ... (I've driven Spa in the snow on Cup2's and it's not for the faint hearted !!)
What are your thoughts ??
I did a soaking wet track day in April on fresh Cup 2s in the 991.1 GT3 RS and couldn't get any heat at all into the tyres, like maybe topped out at 15C surface temperature. I think they're supposed to be at around 70-80C. Didn't seem to matter how I drove, it was like the surface water was acting like coolant.
Equally, it's all very well him turning up to a Michelin test day and having them swapped back and forth, but I wouldn't take PS4Ss (or any road-biased tyre) to a warm dry track day and expect them to survive more than that one day.
Equally, it's all very well him turning up to a Michelin test day and having them swapped back and forth, but I wouldn't take PS4Ss (or any road-biased tyre) to a warm dry track day and expect them to survive more than that one day.
Michelin are the masters of marketing. They re the best at it. But you ll find that the majority of their tests are on track, sponsored by them and chosen by a YouTuber that very rarely gives a view other than, they re the best.
95% of owners do not drive their car on track so barely get decent heat into the tyres to exploit their ultimate performance on the road. A softer compound tyres, with a tread wear rating under 200, will get up to temperature faster than a 300 TW tyre (PS4S)
My experience of cup 2 s, they re great above temps of 5C - no probs in heavy rain if you drive to the conditions, as most do regardless of tyre brand. They re stiff, so have great turn-in but can be a bit crashy on the road, less comfortable for pooling around town or uneven surfaces.
The other N rated tyres, including Pirelli s, are much of a muchness for the road. They all do a job for their intended purpose and lest we forget, Pirelli supply formula 1 with tyres - they know what they re doing but don t shout about it like Michelin.
In my experiences, the biggest differences in tyres - for the street, is winter tyres at temps around zero and semi slicks in the summer. The rest do a job for how most drive on the roads.
When you re next in your Porsche, check your average speed on your computer. You ll quickly realise that this is all marketing nonsense, unless you track the car.
95% of owners do not drive their car on track so barely get decent heat into the tyres to exploit their ultimate performance on the road. A softer compound tyres, with a tread wear rating under 200, will get up to temperature faster than a 300 TW tyre (PS4S)
My experience of cup 2 s, they re great above temps of 5C - no probs in heavy rain if you drive to the conditions, as most do regardless of tyre brand. They re stiff, so have great turn-in but can be a bit crashy on the road, less comfortable for pooling around town or uneven surfaces.
The other N rated tyres, including Pirelli s, are much of a muchness for the road. They all do a job for their intended purpose and lest we forget, Pirelli supply formula 1 with tyres - they know what they re doing but don t shout about it like Michelin.
In my experiences, the biggest differences in tyres - for the street, is winter tyres at temps around zero and semi slicks in the summer. The rest do a job for how most drive on the roads.
When you re next in your Porsche, check your average speed on your computer. You ll quickly realise that this is all marketing nonsense, unless you track the car.
Edited by maz8062 on Tuesday 21st October 07:12
My very subjective side by side PS4S vs P-Zero N0 for road driving is in the warm and dry, I much preferred my old Pirelli’s. They were far sharper. In the wet, the Michelins give me more confidence.
Outright grip is probably higher on the Michelins, but on the road I’m not too bothered by that.
The SC7s on my Macan are excellent, I’ll try those on my Cayman next.
Outright grip is probably higher on the Michelins, but on the road I’m not too bothered by that.
The SC7s on my Macan are excellent, I’ll try those on my Cayman next.
So I'll step in with my experience running Cup2's and PS4S on my 991.2 GT3RS.
I switched to Cup2's from my PS4's early in the season and the first trackdays I did were wet and cool. The tyres could be made to work quite well but required aggressive use of the abs in the braking areas to get heat into the tyres and once building pressure and temperature seemed to perform quite well against some of the Porsche Boxter racers at Anglesey ...
However, when the weather dried I was not so happy with them ... they were last years tyres and whilst I had been seeing almost 1g lateral on the meter in the wet ... they were maxing at around 1.3g in the dry ... it could have been me but ! So I fitted a new set of Cup2's and straight away felt a big improvement at a dry Cadwell Park where they were mega, 95mph round the uphill left hander at the end of the start finish straight and seeing 135 into the braking area for Park, with lateral G maxing at almost 1.5g ...
This gradually deteriorated across successive trackdays (again this could have been me but those RMA days are very fast !) ... so accepting that rain could be on the forecast for the end of the year I fitted my PS4S back on.
Spa for two days was great ... still much slower than the 992 GT3RS' (no surprise !) but still seeing 1.35g lateral in the dry and 1.5g in the uphill braking area at the end of the Kemel Straight (from 150mph on the speedo). The price for this was keeping sessions short because the tyres came up to temperature very quickly and taking more pressure out didn't help ...
Then to Donington again with PS4S ... this time the tyres felt distinctly below parr and seeing 1.2g in the corners ... 1.35g under braking on the abs ... and only getting around five laps from cold to a little over temperature having take 0.7 bar out from standard.
However, for road tyres surely this is mega. PSS5's are now available in 992 GT3RS sizes and according to RPM Teknic can be made to fit on the 991 GT3RS with acceptable geometry ... ??? an option ? Link here
https://rpmtechnik.co.uk/blog/michelin-pilot-sport...
Yes Michelin do a great marketing job, but are there better options for next season ???
I switched to Cup2's from my PS4's early in the season and the first trackdays I did were wet and cool. The tyres could be made to work quite well but required aggressive use of the abs in the braking areas to get heat into the tyres and once building pressure and temperature seemed to perform quite well against some of the Porsche Boxter racers at Anglesey ...
However, when the weather dried I was not so happy with them ... they were last years tyres and whilst I had been seeing almost 1g lateral on the meter in the wet ... they were maxing at around 1.3g in the dry ... it could have been me but ! So I fitted a new set of Cup2's and straight away felt a big improvement at a dry Cadwell Park where they were mega, 95mph round the uphill left hander at the end of the start finish straight and seeing 135 into the braking area for Park, with lateral G maxing at almost 1.5g ...
This gradually deteriorated across successive trackdays (again this could have been me but those RMA days are very fast !) ... so accepting that rain could be on the forecast for the end of the year I fitted my PS4S back on.
Spa for two days was great ... still much slower than the 992 GT3RS' (no surprise !) but still seeing 1.35g lateral in the dry and 1.5g in the uphill braking area at the end of the Kemel Straight (from 150mph on the speedo). The price for this was keeping sessions short because the tyres came up to temperature very quickly and taking more pressure out didn't help ...
Then to Donington again with PS4S ... this time the tyres felt distinctly below parr and seeing 1.2g in the corners ... 1.35g under braking on the abs ... and only getting around five laps from cold to a little over temperature having take 0.7 bar out from standard.
However, for road tyres surely this is mega. PSS5's are now available in 992 GT3RS sizes and according to RPM Teknic can be made to fit on the 991 GT3RS with acceptable geometry ... ??? an option ? Link here
https://rpmtechnik.co.uk/blog/michelin-pilot-sport...
Yes Michelin do a great marketing job, but are there better options for next season ???
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