Probably beat to death but

Ghostriderf80 · 12-13-2016, 02:05 AM

Sorry about this.

What is the widest I can go on 20" 343 wheels?
Planning 275 front and 305 rear once the michelin Sp4 come out.

Any suggestions?

SimCraig · 02-06-2017, 07:20 AM

I used 285 on the front with no problem.

KMORGSM5 · 02-06-2017, 08:13 AM

Why not keep stock size up front? Wouldn't going with larger front tires only induce more under-steer?

I have MPSS 305 (103Y - the Ferrari spec MPSS) and love them. I just replaced my fronts with stock size of MPSS only because the MP4S wasn't available yet.

Redrckt135 · 02-07-2017, 06:58 PM

A lot of guys are running 315 r888's in the rear. I had them on my car for a day and took them off, feels like the sidewall is folding in half around turns and I hated the feeling. 305's are perfect in my opinion.

12-13-2016, 02:05 AM	#1
Ghostriderf80 Banned 840 Rep 1,271 Posts Drives: Just a Porsche Join Date: Jun 2013 Location: Netz iTrader: (1)	Probably beat to death but - tire sizes Sorry about this. What is the widest I can go on 20" 343 wheels? Planning 275 front and 305 rear once the michelin Sp4 come out. Any suggestions?
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02-06-2017, 07:20 AM	#2
SimCraig Registered 0 Rep 2 Posts Drives: 2011 BMW 550i Join Date: Jun 2016 Location: South Carolina iTrader: (0)	I used 285 on the front with no problem.
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02-06-2017, 08:13 AM	#3
KMORGSM5 Captain 320 Rep 843 Posts Drives: 14 CP M5 Join Date: Feb 2016 Location: South Florida iTrader: (0)	Why not keep stock size up front? Wouldn't going with larger front tires only induce more under-steer? I have MPSS 305 (103Y - the Ferrari spec MPSS) and love them. I just replaced my fronts with stock size of MPSS only because the MP4S wasn't available yet.
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02-07-2017, 06:58 PM	#4
Redrckt135 Major 430 Rep 1,108 Posts Drives: 16 M5 & 17 X5M Join Date: May 2012 Location: Nj iTrader: (10)	A lot of guys are running 315 r888's in the rear. I had them on my car for a day and took them off, feels like the sidewall is folding in half around turns and I hated the feeling. 305's are perfect in my opinion.
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