Going around in circles. MPSC2 20" question

M4_CaptFlashheart · 03-18-2019, 06:17 AM

I have been given conflicting info about fitting Michelin Sport Cup 2 tyres to my M4. It has the 666 20" wheels. I'd like to fit MPSC2 tyres all round but cant find the sizes for the front that I want. I am told the 285/30/20 will fit the rear, but what front sizes? Does anyone here run these tyres on an M4 or am I just p*ssing in the wind?

many thanks

CanAutM3 · 03-18-2019, 08:09 AM

I read some folks are successfully running the Porsche GT3/GT4 front 245/35R20(N0) tire. At 9.6" (according to TireRack), it has a rather wide tread width for its size, so it should work well enough. As a reference, the CS/GTS 265/35R19(*) front tire has a 9.1" tread width.

M4_CaptFlashheart · 03-18-2019, 08:56 AM

I don't think they'll work on a 20" wheel though.

ment4t · 03-18-2019, 02:55 PM

I ran 20" HREs with 245/35/20 on 20x9 front, and 295/30/20 on the 20x10 rears.

I tracked the car 10 times last season with that setup and it's not very good. The tires are great, but the sizing is wrong for the F8x.

CanAutM3 · 03-18-2019, 09:38 PM

Quote:

Originally Posted by M4_CaptFlashheart

I don't think they'll work on a 20" wheel though.

Yes they would.

PS: fixed typo...

Bon F80 · 03-21-2019, 09:25 AM

Quote:

Originally Posted by ment4t

I ran 20" HREs with 245/35/20 on 20x9 front, and 295/30/20 on the 20x10 rears.

I tracked the car 10 times last season with that setup and it's not very good. The tires are great, but the sizing is wrong for the F8x.

too much understeering?

ment4t · 03-21-2019, 06:47 PM

Quote:

Originally Posted by Pong

too much understeering?

Understeer, significant sidewall rollover.

MPoweRo · 03-22-2019, 02:35 AM

Quote:

Originally Posted by CanAutM3

I read some folks are successfully running the Porsche GT3/GT4 front 245/35R20(N0) tire. At 9.6" (according to TireRack), it has a rather wide tread width for its size, so it should work well enough. As a reference, the CS/GTS 265/35R19(*) front tire has a 9.1" tread width.

I do this. Have been running for a year and four track events. Can recommend it.

03-18-2019, 06:17 AM	#1
M4_CaptFlashheart Second Lieutenant 227 Rep 269 Posts Drives: M4 2018 Join Date: Aug 2017 Location: uk iTrader: (0)	Going around in circles. MPSC2 20" question I have been given conflicting info about fitting Michelin Sport Cup 2 tyres to my M4. It has the 666 20" wheels. I'd like to fit MPSC2 tyres all round but cant find the sizes for the front that I want. I am told the 285/30/20 will fit the rear, but what front sizes? Does anyone here run these tyres on an M4 or am I just p*ssing in the wind? many thanks __________________ M4 AY 2016 M4 SMB 2017 M4 Riviera Blue with CCB's 2018
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03-18-2019, 08:09 AM	#2
CanAutM3 General 21117 Rep 20,741 Posts Drives: 2021 911 turbo Join Date: Jan 2012 Location: Montreal iTrader: (1) Garage List 2022 Audi RS6 [10.00] 2021 Porsche 911 turbo [10.00]	I read some folks are successfully running the Porsche GT3/GT4 front 245/35R20(N0) tire. At 9.6" (according to TireRack), it has a rather wide tread width for its size, so it should work well enough. As a reference, the CS/GTS 265/35R19() front tire has a 9.1" tread width. __________________ Porsche 911 turbo* 2021 992 GT Silver Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black Last edited by CanAutM3; 03-18-2019 at 09:37 PM..
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03-18-2019, 08:56 AM	#3
M4_CaptFlashheart Second Lieutenant 227 Rep 269 Posts Drives: M4 2018 Join Date: Aug 2017 Location: uk iTrader: (0)	I don't think they'll work on a 20" wheel though. __________________ M4 AY 2016 M4 SMB 2017 M4 Riviera Blue with CCB's 2018
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03-18-2019, 02:55 PM	#4
ment4t Private 31 Rep 80 Posts Drives: Track-Legal MW F82 Join Date: Nov 2017 Location: Brooklyn, NY iTrader: (0)	I ran 20" HREs with 245/35/20 on 20x9 front, and 295/30/20 on the 20x10 rears. I tracked the car 10 times last season with that setup and it's not very good. The tires are great, but the sizing is wrong for the F8x.
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