Issues of 305/30/20 on stock 343M so far?

HXS · 04-13-2018, 11:15 PM

I know some of you guys are running 305’s on rear 343M’s, even though they are not the recommended width.

Any of you guys have any problems so far?

M5 TT · 04-14-2018, 12:49 AM

Other than rubbing but I have 16mm spacers on the rear. Going to change to 10mm soon, I have no issues. Good chunk more grip now though.

apexlocator · 04-14-2018, 05:05 AM

If pzeros, get the 305 99Y load rating to avoid the sidewall bulge....12mm spacers and H&R springs will work in this particular setup.

JtheW · 04-15-2018, 01:12 AM

I'm on CP 601 wheels with 305 MPSS and have no issues. I'm pretty low on KW HAS and 10mm spacers with no rubbing. You should be fine.

M6-Coupe · 04-15-2018, 01:52 AM

Quote:

Originally Posted by HXS

I know some of you guys are running 305’s on rear 343M’s, even though they are not the recommended width.

Any of you guys have any problems so far?

Other than not recommended by manufacturer (that you already mentioned) you must be fine but If I were you, I would use 5 mm spacer .
Manufacturer is not recommending because 305 mm width is too much for 10" rims and that's why they recommend 10.5" rims.

04-13-2018, 11:15 PM	#1
HXS Licensed Drug Dealer 742 Rep 2,269 Posts Drives: F10 M5 Join Date: Oct 2010 Location: SoCal iTrader: (7)	Issues of 305/30/20 on stock 343M so far? I know some of you guys are running 305’s on rear 343M’s, even though they are not the recommended width. Any of you guys have any problems so far?
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04-14-2018, 12:49 AM	#2
M5 TT Captain 169 Rep 657 Posts Drives: F90 M5 Join Date: Sep 2008 Location: UK iTrader: (0)	Other than rubbing but I have 16mm spacers on the rear. Going to change to 10mm soon, I have no issues. Good chunk more grip now though. __________________ 540i GTR-R35, F90 M5, X3MC, RS3, RS7, M5, S7, S3, RS3, RS6, GTR R35, 996 Turbo, M5, RS6 V10, Cayenne Turbo S
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04-14-2018, 05:05 AM	#3
apexlocator Captain 243 Rep 881 Posts Drives: 2014 M5 Join Date: Feb 2016 Location: socal iTrader: (1)	If pzeros, get the 305 99Y load rating to avoid the sidewall bulge....12mm spacers and H&R springs will work in this particular setup.
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04-15-2018, 01:12 AM	#4
JtheW First Lieutenant 112 Rep 343 Posts Drives: 22 m850gc Join Date: Oct 2014 Location: Phoenix, Az. iTrader: (0)	I'm on CP 601 wheels with 305 MPSS and have no issues. I'm pretty low on KW HAS and 10mm spacers with no rubbing. You should be fine. __________________ 22 M850i gran coupe
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