Best 'Wet Weather' Tyres for 991.2 GT3 - Page 3 - 911/Carrera GT - PistonHeads UK

Hi, I'm getting increasingly frustrated by the lack of grip in the GT3, in the wet. It's almost undrivable for me, especially on track days if damp. What's a good alternative to the Cup 2 Tyres that are currently on it? Any ideas much appreciated.

I had to get two new tyres on my rather older GT3 and went for Pilot Sport 4S, it’s a road car for me so I wanted something more general purpose than track oriented. Sometime after I am pretty sure Chris Harris tweeted he had some on his Touring and how good they were. They’re a great tyre IMO, it will be interesting to hear other opinions.

Thanks. Sounds like a good shout. Will see what others think. It’s mainly road for me and even if I go on track, I’m not interested in breaking lap records (just not crashing).

I am very happy with the 4S on my car. I assume on track the best would be a set of wets, rather pricey though ... I might try a set of Trofeo R on a wet and cold track day tomorrow (or I just sleep in and call it on this shortened 2020 season)

Just to add - when it is cold I use Sottozeros

PS4S No contest.

Thanks. Looks like it’s PS4s. Just looked online and these get an A rating for wet. The cup2s get and E!

Anybody planning on running Dunlops through wet/colder days? How do they compare to cup2's and PS4S?

kman said: Anybody planning on running Dunlops through wet/colder days? How do they compare to cup2's and PS4S? I hate the brand. No need to look anywhere else from the PS4S

Duh, forgot I’d seen this previous thread. Lot gone on since January https://www.pistonheads.com/gassing/topic.asp?h=0&...

kman said: Anybody planning on running Dunlops through wet/colder days? How do they compare to cup2's and PS4S? I ran dunlops race 2s in the cold and wet last winter on a weekend car where it could be cold and maybe wet when leaving home but dryer and warmer for most of drive. They were more or less the same as Cup2s. They need to be warmed up but once warm they’re fine if treated with respect. I wouldn’t use Cups on a daily through winter though. Just not worth the risk.

arcamalpha said: I ran dunlops race 2s in the cold and wet last winter on a weekend car where it could be cold and maybe wet when leaving home but dryer and warmer for most of drive. They were more or less the same as Cup2s. They need to be warmed up but once warm they’re fine if treated with respect. I wouldn’t use Cups on a daily through winter though. Just not worth the risk. You cannot get heat in the front’s I find when very cold, any small straights cools the tyres, so when you then hit a bend they just understeer like a pig. And when you need to brake , nothing happens, you get abs ice mode, very dangerous.

2010spy said: Hi, I'm getting increasingly frustrated by the lack of grip in the GT3, in the wet. It's almost undrivable for me, especially on track days if damp. What's a good alternative to the Cup 2 Tyres that are currently on it? Any ideas much appreciated. I have cup 2’s on all of my cars. I’ve even just had a set put on the 430 Scuderia. On a gt3 a PS4 is a backward step. Cup 2’s need a bit of heat to work, but in all fairness they aren’t that hard to get heat into and once warm they are brilliant. If you are having issues I’d suggest that maybe the set you have are past their best? I change mine every 2 years or 6000 miles.

Porsche911R said: You cannot get heat in the front’s I find when very cold, any small straights cools the tyres, so when you then hit a bend they just understeer like a pig. And when you need to brake , nothing happens, you get abs ice mode, very dangerous. Yes that’s true if it’s particularly cold. As I say, ai only go out if I’m confident conditions will improve during the drive/way home etc.

JulierPass said: 2010spy said: Hi, I'm getting increasingly frustrated by the lack of grip in the GT3, in the wet. It's almost undrivable for me, especially on track days if damp. What's a good alternative to the Cup 2 Tyres that are currently on it? Any ideas much appreciated. I have cup 2’s on all of my cars. I’ve even just had a set put on the 430 Scuderia. On a gt3 a PS4 is a backward step. Cup 2’s need a bit of heat to work, but in all fairness they aren’t that hard to get heat into and once warm they are brilliant. If you are having issues I’d suggest that maybe the set you have are past their best? I change mine every 2 years or 6000 miles. If it’s too cold you can’t get heat into them....I was on track at Silverstone with a PEC instructor last November when it was 2 deg and wet. There wasn’t any grip. There were 911’s there on normal road tyres which weren’t anywhere nearly as badly effected by the temperatures. .

It’s all about the temps :-)

Cheib said: JulierPass said: 2010spy said: Hi, I'm getting increasingly frustrated by the lack of grip in the GT3, in the wet. It's almost undrivable for me, especially on track days if damp. What's a good alternative to the Cup 2 Tyres that are currently on it? Any ideas much appreciated. I have cup 2’s on all of my cars. I’ve even just had a set put on the 430 Scuderia. On a gt3 a PS4 is a backward step. Cup 2’s need a bit of heat to work, but in all fairness they aren’t that hard to get heat into and once warm they are brilliant. If you are having issues I’d suggest that maybe the set you have are past their best? I change mine every 2 years or 6000 miles. If it’s too cold you can’t get heat into them....I was on track at Silverstone with a PEC instructor last November when it was 2 deg and wet. There wasn’t any grip. There were 911’s there on normal road tyres which weren’t anywhere nearly as badly effected by the temperatures. . They don’t work below 7 degrees so that would be why. If it’s standing water wet or December / January you’d be better off with Uniroyal Rainsports but the rest of the time Cup’s are pretty untouchable imo.

Cup 2’s are fine in most conditions except standing water in my experience. If it rains heavily they can be hairy. I Aqua planned at 45mph on a dual carriageway in Wales last year in my Touring. If you want all all year round tyre that has very good wet weather performance go for the Pilot Sport 4S. There is an N rated version now for Porsche. Not as fast on track as the Cup2 but a better all year round road tyre for sure.

Porsche911R said: It’s all about the temps :-) ^This, totally. Standing water aside, I find the Cup 2's are fine in the wet, [b]as long as[/i] the temperature says above about 7 degrees. Otherwise, all bets are off.

Digga said: Porsche911R said: It’s all about the temps :-) ^This, totally. Standing water aside, I find the Cup 2's are fine in the wet, [b]as long as[/i] the temperature says above about 7 degrees. Otherwise, all bets are off. Drove mine at minus 3 for some distance. It was dry and the roads salted but no issues other than being mega careful and light with the throttle. Survived a hail storm too! Not an experience I would want too often though..

Porsche are sticklers for detail when it comes to fitting tyres. They can order the Michelin Pilot Sport 4S but are not allowed to fit them! All GT3/GT2’s have to be be fitted with a Cup 2 tyre.. even in the winter. V odd... am trying to change tyres ahead of a trip to Scotland next week... weather looking v damp!

browngt3 said: Digga said: Porsche911R said: It’s all about the temps :-) ^This, totally. Standing water aside, I find the Cup 2's are fine in the wet, [b]as long as[/i] the temperature says above about 7 degrees. Otherwise, all bets are off. Drove mine at minus 3 for some distance. It was dry and the roads salted but no issues other than being mega careful and light with the throttle. Survived a hail storm too! Not an experience I would want too often though.. Does make me wonder... The only time I've driven them cold (through Peak District hills) was on tyres that were coming up to replacement - so worn and a bit on the old side too.

GTSJOE said: Porsche are sticklers for detail when it comes to fitting tyres. They can order the Michelin Pilot Sport 4S but are not allowed to fit them! All GT3/GT2’s have to be be fitted with a Cup 2 tyre.. even in the winter. V odd... am trying to change tyres ahead of a trip to Scotland next week... weather looking v damp! Wow. That's a pain as my Black Circles fitter won't go near Centre-Locks and I'm not sure I trust Kwik-Fit.

2010spy said: Wow. That's a pain as my Black Circles fitter won't go near Centre-Locks and I'm not sure I trust Kwik-Fit. “Kwik- Fit” Absolutely not..

GTSJOE said: Porsche are sticklers for detail when it comes to fitting tyres. They can order the Michelin Pilot Sport 4S but are not allowed to fit them! All GT3/GT2’s have to be be fitted with a Cup 2 tyre.. even in the winter. V odd... am trying to change tyres ahead of a trip to Scotland next week... weather looking v damp! Are you sure about that? I've just got mine booked in for PS4s to be fitted next week.

Batster3 said: GTSJOE said: Porsche are sticklers for detail when it comes to fitting tyres. They can order the Michelin Pilot Sport 4S but are not allowed to fit them! All GT3/GT2’s have to be be fitted with a Cup 2 tyre.. even in the winter. V odd... am trying to change tyres ahead of a trip to Scotland next week... weather looking v damp! Are you sure about that? I've just got mine booked in for PS4s to be fitted next week. Porsche Leicester put PS4S’s on my touring last year. All round tyre of choice. Don’t need more grip on the road and it’s still a good track tyre.

Batster3 said: Are you sure about that? I've just got mine booked in for PS4s to be fitted next week. Yes, just off the phone from Porsche West London. The service guy said he can order the tyre but fitter said he is not allowed to fit the tyre. I called again, this time went through to parts department. Parts guy asked the fitter... same answer. Not allowed to fit non Cup2s to GT3. Iverson Tyres in Chiswick have sourced a set of tyres, fitting them on Wednesday.

2mpete said: Porsche Leicester put PS4S’s on my touring last year. All round tyre of choice. Don’t need more grip on the road and it’s still a good track tyre. Porsche Leicester may be more relaxed as run by Sytner. Porsche West London is part of Porsche GB.

How much is a lightly worn set of Cup 2s worth? Is there a market for these for people who swap and change for track days?

Porsche Swindon supplied and fitted a set to my car in March. No issue at all.

I bought a second hand set of genuine Porsche Turbo S rims with winter tyres (Alpins i think!) and stuck those on last November. Absolutely transformed the car during the winter months. Could drive through standing water etc and apply the power coming out of roundabouts as if it was a Summers day! No more twitching bum moments! G

2010spy said: How much is a lightly worn set of Cup 2s worth? Is there a market for these for people who swap and change for track days? I wonder exactly the same, I have 4.5 mm all round on Cup 2’s. I have order PS4S on Blackcircles this morning with a one day 15% discount.

Claret m said: I wonder exactly the same, I have 4.5 mm all round on Cup 2’s. I have order PS4S on Blackcircles this morning with a one day 15% discount. Hah, did the same. Come to about £840?

2010spy said: Claret m said: I wonder exactly the same, I have 4.5 mm all round on Cup 2’s. I have order PS4S on Blackcircles this morning with a one day 15% discount. Hah, did the same. Come to about £840? don't buy the older N0 you want the better N1's which costa bit more.

Porsche911R said: don't buy the older N0 you want the better N1's which costa bit more. Can't see them on Black Circles - am I missing something?

2010spy said: Porsche911R said: don't buy the older N0 you want the better N1's which costa bit more. sorry my error N1 is cups doh. N0 PS4S £776. that's bloody cheap :-)

2010spy said: Hi, I'm getting increasingly frustrated by the lack of grip in the GT3, in the wet. It's almost undrivable for me, especially on track days if damp. What's a good alternative to the Cup 2 Tyres that are currently on it? Any ideas much appreciated. What was the temperature on the rainy days when you were on track? Did you try to get proper heat into the tires - which can be an issue on cold rainy days as you need to actively work the car to do so

A lot is also geo based as a lot of track geo's reduces front toe, you get less scub so less heat. You cannot get heat into a front tyre in the winter on the road. The rear in the GT3 have Massive heaters sitting next to them :-) but the front will be cold as ice esp after a 300 meter straight. These side mufflers are handy in winter, but then over heat tyres in summer and on track. !!!

Dr S said: What was the temperature on the rainy days when you were on track? Did you try to get proper heat into the tires - which can be an issue on cold rainy days as you need to actively work the car to do so Last week at Goodwood it was about 10 degrees and raining. I couldn't get much heat into the tires, but to be honest I'm not competent enough to risk it (and you only get 4 proper laps at Goodwood). In December it was 3 degrees and wet at Silverstone (Open Pit Lane) and the car was being driven by a 'proper driver' and couldn't get any real heat into the tires without risking it (PS I could not easily replace this car even if I could afford to).

GTSJOE said: Porsche are sticklers for detail when it comes to fitting tyres. They can order the Michelin Pilot Sport 4S but are not allowed to fit them! All GT3/GT2’s have to be be fitted with a Cup 2 tyre.. even in the winter. V odd... am trying to change tyres ahead of a trip to Scotland next week... weather looking v damp! I would too on reflection. Just came back from the Highlands in heavy rain on Cup2’s (albeit well worn) and poo came out. (As Jezza is wont to say)

I believe the reason some Porsche Centres won't fit PS4s is that they're unaware that the Porsche Approved Tyre List for the GT3 has been amended and they are working from the previous, out-of-date list. The old list had 2 tyres on it, the Cup 2 and the Dunlop Sportmaxx, whereas the amended list now also features the PS4 as an approved tyre for the GT3. Swindon have confirmed this to be the case and have fitted PS4s to my GT3.

Always left the cup 2’s on my 991GT3’s throughout every month of every year. It’s my 6th yr in one. The main issue is standing water and becoming a hovercraft, not so much outright grip, unless you are doing F1 role play.

I once became a Hovercraft Pilot in my GT3 on the M40. It was the most terrifying experience in my life and it was only sheer luck that it didn’t end very badly. I’m amazed that Porsche haven't been sued yet. I think it’s going to happen in the future when there’s a big accident. I won’t drive mine in the rain if I can help it.

Thread resurrection ... The Continental Sport Contact 7 has an A rating in the wet where the MPS4S has a rating of B in the wet. Continental say that they manufacture tyres in N rating for porsche, but I can't see an N rating on the 265/35 R20Y(99) though the 325/30 R21Y (108) sizes is available as an NDO (Porsche) rating ... Anybody know what NDO means ? Does anybody have any experience of these ? Thanks !

Porsche introduced model specific designators during the summer of 2020(?). ND 0 = N rating (as before), D is for Panamera, 0 (zero) the iteration number. NA ...........992 models NB .......... 718 NC .......... Cayenne ND ..........Panamera NE .......... Macan NF ..........Toaster Edited by M11rph on Thursday 29th February 17:52

ChrisW. said: Thread resurrection ... The Continental Sport Contact 7 has an A rating in the wet where the MPS4S has a rating of B in the wet. Continental say that they manufacture tyres in N rating for porsche, but I can't see an N rating on the 265/35 R20Y(99) though the 325/30 R21Y (108) sizes is available as an NDO (Porsche) rating ... Anybody know what NDO means ? Does anybody have any experience of these ? Thanks ! The NDO tyres are N rated but designed for the Panamera. That's why there's no size to fit front wheel of GT3 RS. Strangely, not all 325 widths are the same. The 325/30 R21Y NDO tyre for instance are designed to fit a 11.5 inch wide wheel whereas the 325/30 R21Y N rated Cup 2 is designed to fit a 12.5 inch wide wheel. The actual tyre tread width physically measured on a Pilot S4S is 11.5 inches but a Cup 2 is 12.8 (and a Dunlop Sportmaxx2 is 12.3 IIRC). The Pilot S4S in 325 is stretched to buggery on a GT3 RS rim. I'm guessing the Conti will be the same. It doesn't look right but might not matter.