18" Forgestar setup E92 pre-LCI M-sport

E92mech · 02-13-2013, 03:34 PM

I've been searching through many posts; this subforum is very information rich. Unfortunately, I haven't found a concise answer to my admittedly straightforward question.

I drive a 2010 E92 M-sport pre-LCI. I currently have OEM 19" type 225 wheels with Michelin Pilot Super Sports. Specifically, they are:

Type 225
Front: 8x19 ET 37 Tire: 225/35/19
Rear: 9x19 ET 39 Tire: 255/30/19

I'm thinking about switching to Forgestar wheels, particularly 18" wheels, and would be mounting Michelin PSS either way.

What are the maximum front/back wheel/tire sizes that I could use in either 19" or 18" on this car without readjusting fenders, suspension or camber?

Much appreciated.

deluxe 247 · 02-13-2013, 04:24 PM

depends on offset and width, but generally i believe 235/35 front 265/30 with 19s 235/40 265/35 with 18s

E92mech · 02-13-2013, 04:57 PM

Great, thanks--

With those increased dimensions on the tire width/aspect, can I increase my wheel size front/back by 0.5" each from OEM 8"/9" front:back to 8.5"/9.5" front:back without causing rubbing? For example, when I use the calculator, with same offsets, a 9.5 rear wheel would extend 6mm extra inside and outside, while the overall dimension falls within 1%.

Thanks again

02-13-2013, 03:34 PM	#1
E92mech E92 17 Rep 130 Posts Drives: 2010 E92 Le Mans M-Sport Join Date: Feb 2012 Location: Maryland iTrader: (0)	18" Forgestar setup E92 pre-LCI M-sport I've been searching through many posts; this subforum is very information rich. Unfortunately, I haven't found a concise answer to my admittedly straightforward question. I drive a 2010 E92 M-sport pre-LCI. I currently have OEM 19" type 225 wheels with Michelin Pilot Super Sports. Specifically, they are: Type 225 Front: 8x19 ET 37 Tire: 225/35/19 Rear: 9x19 ET 39 Tire: 255/30/19 I'm thinking about switching to Forgestar wheels, particularly 18" wheels, and would be mounting Michelin PSS either way. What are the maximum front/back wheel/tire sizes that I could use in either 19" or 18" on this car without readjusting fenders, suspension or camber? Much appreciated.
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02-13-2013, 04:24 PM	#2
deluxe 247 Shake and Bake 32 Rep 494 Posts Drives: 2016 M4 Join Date: Mar 2011 Location: Los Angeles & San Diego iTrader: (3)	depends on offset and width, but generally i believe 235/35 front 265/30 with 19s 235/40 265/35 with 18s
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02-13-2013, 04:57 PM	#3
E92mech E92 17 Rep 130 Posts Drives: 2010 E92 Le Mans M-Sport Join Date: Feb 2012 Location: Maryland iTrader: (0)	Great, thanks-- With those increased dimensions on the tire width/aspect, can I increase my wheel size front/back by 0.5" each from OEM 8"/9" front:back to 8.5"/9.5" front:back without causing rubbing? For example, when I use the calculator, with same offsets, a 9.5 rear wheel would extend 6mm extra inside and outside, while the overall dimension falls within 1%. Thanks again
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