Is anyone having issues with front tires at the track?

[M4_GTS]

Why not give the re71r a try? They have the front in either 265 or 275/35/19 and the rear in 295/30/19

[BMW9]

Originally Posted by rr_m

Could you be more specific?

I agree. I had R888rs on my M4 with KW V3. Lots of grip but very unpredictable and very hard. At first I put up with the noise because of the grip but soon the grip runs out and then you have a set of loud (I mean all the time loud) tires with a harsh ride and low grip. I put my worn stock PSS back on and the car became so much more comfortable .......grip reduced even more.

[rr_m]

Originally Posted by BMW9

I agree. I had R888rs on my M4 with KW V3. Lots of grip but very unpredictable and very hard. At first I put up with the noise because of the grip but soon the grip runs out and then you have a set of loud (I mean all the time loud) tires with a harsh ride and low grip. I put my worn stock PSS back on and the car became so much more comfortable .......grip reduced even more.

Unfortunately, I already had them on the car before I got the negative feedback, so I thought I'd give 'em a try anyway. Did not work well on the GTS at all. The rear was so loose, it became more of a car control day than anything. Worked a little better at lower pressures, but the front and rear grip were not well balanced (on the stock wheels).

Judging from the temps, I think these tires needed less camber both front and rear than the Cup2's among probably other things, but I'm not in the mood to go chasing the best setup for them given the negative feedback I've gotten now.

I will say when they let go, it was more manageable than I was expecting, at least on these first sessions.

Back to the M01 Cup2's for now.

[VCP]

Trofeo R's?

Originally Posted by rr_m

Unfortunately, I already had them on the car before I got the negative feedback, so I thought I'd give 'em a try anyway. Did not work well on the GTS at all. The rear was so loose, it became more of a car control day than anything. Worked a little better at lower pressures, but the front and rear grip were not well balanced (on the stock wheels).

Judging from the temps, I think these tires needed less camber both front and rear than the Cup2's among probably other things, but I'm not in the mood to go chasing the best setup for them given the negative feedback I've gotten now.

I will say when they let go, it was more manageable than I was expecting, at least on these first sessions.

Back to the M01 Cup2's for now.

[SYT_Shadow]

RE71 or the Trofeo R is probably among the better options now

The PSC2 is a good tire as well. It's unfortunate it's so expensive in the US, in Europe it's much more reasonable

[BMW9]

Originally Posted by VCP

Trofeo R's?

Yes Trofeo's should be a good option. People have mentioned them. They have them in the stock 265/35/19 for the front but I'm not sure if the 295/30/20s will fit. They are supposed to have more grip than the mpsc2s. Has anyone tried the trofeos?
I think re71 and R888s are below mpsc and trofeos in quality and performance.

[rr_m]

Originally Posted by BMW9

Yes Trofeo's should be a good option. People have mentioned them. They have them in the stock 265/35/19 for the front but I'm not sure if the 295/30/20s will fit. They are supposed to have more grip than the mpsc2s. Has anyone tried the trofeos?
I think re71 and R888s are below mpsc and trofeos in quality and performance.

Yeah, I'd love to hear if anyone's tried them. The fronts are a touch narrower than the R888R's (9.8 vs 10.1), so should fit. The rears are also a touch narrower at the tread (10.8 vs 11.1), but a little taller (27.2 vs 26.3) and wider (11.9 vs 11.4).

[VCP]

295's will fit no problem @bmw9. I have 275 front 295 rear brand new PSC2. I will be going Trofeo R next time. I just could not pass the deal on this set of PSC2's I just got. Go for it man! Be a ground breaker

Originally Posted by rr_m

Yeah, I'd love to hear if anyone's tried them. The fronts are a touch narrower than the R888R's (9.8 vs 10.1), so should fit. The rears are also a touch narrower at the tread (10.8 vs 11.1), but a little taller (27.2 vs 26.3) and wider (11.9 vs 11.4).

[dongerkim]

Originally Posted by Captain Unknown GT4

No, just drive it from Bmw dealer on street setup to Nurburgring and did only 4 laps. This is the 4th lap. Bmw factory lap was driven on this street setup as GTS is deliverd around the world. I would say the low down track setting Will slow you down here due to car Will bounce of an lose traction on many scary fast bends. Like kesselchen kink and tiergarten dip.

One need very Big balls to go fast on Nurburgring on the stock bmw GTS GP track setting. Then again sure you can lower it down to suit personal pace and driverstyle(considering rebounce and rebound is taken in to play)

But stock BMW DROP down low GP setting Will slow us down, confidence fly out the Window when car start bouncing at 285 in to tiergarten dip. On BMW stock street setup it fly past here no issue at all. Thats how god its developee here.

A friend did try and if you look at his car how they are bouncing around on the Seat past Big karussel, then see how relaxed My car is same section.

Here is My lap.

https://youtu.be/eRt572YHCxI

See My friends GTS lap, its low down set by schirmer motorsport, and that guy know how to set it at this track. But this first try did show My friends car was a bit hard. He is on here and could tel it him selfe. Schirmer motorsport Will set it god but you would need a few trackdays to figure it out.(also I suggest datalogg pre, during and past)

https://youtu.be/UAYy7-LEjCU

Wow great lap! So your friend bought an M4 GTS then took it to Tom Schirmer? Can’t get anymore hardcore than that...


Are you two both running suspension on Sport +?

[BarryB]

Originally Posted by VCP

295's will fit no problem @bmw9. I have 275 front 295 rear brand new PSC2. I will be going Trofeo R next time. I just could not pass the deal on this set of PSC2's I just got. Go for it man! Be a ground breaker

The non BMW star tire seems to be a much better value.....(275)

[VCP]

Agree

Originally Posted by BarryB

The non BMW star tire seems to be a much better value.....(275)

[M4_GTS]

Originally Posted by dongerkim

Are you two both running suspension on Sport +?

All M4 GTS owners run their car on the secret "sport++" suspension setting.

[BMW9]

Originally Posted by VCP

295's will fit no problem @bmw9. I have 275 front 295 rear brand new PSC2. I will be going Trofeo R next time. I just could not pass the deal on this set of PSC2's I just got. Go for it man! Be a ground breaker

Thanks. I will def do it when my stock tires wear out.

[dongerkim]

Originally Posted by MarksM

Tried the Cup 2's Gone in less than a day. Changing to something else for the street.
These Hoosiers worked MUCH MUCH better. Can you say "GRIP". And I can use them again for another 2 days

295 x 19 fronts and 315 x 18 rears. (Yeah, Yeah, I know. But you might be wrong!) Minor rub fronts at 3/4 full lock

What do you mean exactly “gone in less than a day”. Was it the front? back? outside shoulders? Is this normal for cup2’s? I’ve changed my driving style quite a bit to save some front tire life (OEM camber), but one day seems like overkill. Which track are you on?

[schnell325]

285/30 PSCup2s definitely fit up front on a 19x10 ET25 wheel. No rubbing at all with GC plates at -2.6. No spacers.

[dongerkim]

I am actually going to put on 245/35/20 front Porsche N0 and either the porsche or BMW 285/30/20 rear cup2’s.

Anyone have any experience with them? particularly front sidewall roll over issues like the PS4/PSS have with no camber plates? If so, what tire pressures are you running?

[schnell325]

Originally Posted by dongerkim

I am actually going to put on 245/35/20 front Porsche N0 and either the porsche or BMW 285/30/20 rear cup2’s.

Anyone have any experience with them? particularly front sidewall roll over issues like the PS4/PSS have with no camber plates? If so, what tire pressures are you running?

245? Why have you decided to go narrower than stock ?

[dongerkim]

Originally Posted by schnell325

245? Why have you decided to go narrower than stock ?

I don’t think they make a BMW front size for 20”. And from what I have read, the actual contact patch from the porsche N0/N1 245/35/20 is actually slightly wider than BMW 265 star

[FormulaMMM]

Well, +1 on this issue. 2nd time out. Couldn't be much more diligent as far as tire pressures, proper warm up, cool down, etc. This has never occurred with any other car and tire combo I've tracked.

Fundamentally the car is just too damn fast, and the chassis too competent to be running street camber up front. Good pace in combination with a clockwise track and multiple tight right handers/hairpins, seems inevitable.

My question is: Has anyone pushed through this issue, shaved/equalized ('ish) the tread in the area of the chunking? Or does it just get worse?

Recalling the NT01 tread splice issue that I and many others have experienced. Looks horrible initially, resolves with time and sessions.

[VCP]

GC camber plates, problem solved

Originally Posted by FormulaMMM

Well, +1 on this issue. 2nd time out. Couldn't be much more diligent as far as tire pressures, proper warm up, cool down, etc. This has never occurred with any other car and tire combo I've tracked.

Fundamentally the car is just too damn fast, and the chassis too competent to be running street camber up front. Good pace in combination with a clockwise track and multiple tight right handers/hairpins, seems inevitable.

My question is: Has anyone pushed through this issue, shaved/equalized ('ish) the tread in the area of the chunking? Or does it just get worse?

Recalling the NT01 tread splice issue that I and many others have experienced. Looks horrible initially, resolves with time and sessions.

[FormulaMMM]

Originally Posted by VCP

GC camber plates, problem solved

For sure...

[BMW9]

Me Too. This was after just one day willows springs . I did half day at the streets and 1/2 at big willow so most of this wear was in 1/2 the day at Big willow. It was 100 degrees. Tires were new with 2000 street miles on them .
Time for new tires And later, camber plates. I was sure that I would go with 275/295s but now I'm having second thoughts. Is it better to stay with stock tires that BMW and Michelin took the time to developed exclusively for this car or is there some time to be gained from 275/295s? (I'll get either torfeo or PSC2) The stock set up was very predictable and consistent, I don't really care about comfort. I want faster lap times and a consistent and predictable set up.
Any advice would be appreciated. Mr VCP, you have probably tried everything.