245/40/18 on factory staggered in the rear?

Bleeped · 12-15-2015, 12:54 PM

Hi guys, looking to get all season tires for the factory staggered wheels. The PSS have been excellent but would like an all season tire. The factory size of 245/35/18 makes this very difficult only giving me two options on tirerack.com. If I go 245/40/18 there are many more choices to pick from. Tirerack told me the do not recommend the 245/40 as it is 1 inch taller in overall diameter. What is your opinion on tire size for the factory staggered rears? Appreciate the help!

dah · 12-15-2015, 01:09 PM

235/40/18 will work

DanG · 12-20-2015, 01:44 PM

You can actually use 225/40/18s on all four wheels.

The optimum size from Michelin on an 18 X 8 wheel is 225/40/18.

Bleeped · 12-28-2015, 11:45 AM

Thanks for the input. If I wanted to stay with staggered setup, what issues (if any) would I face if I did put 245/40's on my rear factory wheels? Speedo off a little? (it is from the factory anyways) anything else?

Bleeped · 12-29-2015, 09:48 AM

will this trigger any dash lights since the rears would be taller than the fronts? Factory staggered the fronts are actually larger in diameter than rears.

12-15-2015, 12:54 PM	#1
Bleeped Private 14 Rep 44 Posts Drives: 2014 M235 Join Date: Jul 2015 Location: Dallas iTrader: (0)	245/40/18 on factory staggered in the rear? Hi guys, looking to get all season tires for the factory staggered wheels. The PSS have been excellent but would like an all season tire. The factory size of 245/35/18 makes this very difficult only giving me two options on tirerack.com. If I go 245/40/18 there are many more choices to pick from. Tirerack told me the do not recommend the 245/40 as it is 1 inch taller in overall diameter. What is your opinion on tire size for the factory staggered rears? Appreciate the help!
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12-15-2015, 01:09 PM	#2
dah Private First Class 21 Rep 138 Posts Drives: 2016 228i convertible Join Date: Jul 2008 Location: Texas iTrader: (-1)	235/40/18 will work
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12-20-2015, 01:44 PM	#3
DanG Major General 11337 Rep 7,090 Posts Drives: 2018 M2 AW DCT Join Date: Aug 2012 Location: Seattle, WA iTrader: (1) Garage List 2018 BMW M2 [7.95]	You can actually use 225/40/18s on all four wheels. The optimum size from Michelin on an 18 X 8 wheel is 225/40/18.
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12-28-2015, 11:45 AM	#4
Bleeped Private 14 Rep 44 Posts Drives: 2014 M235 Join Date: Jul 2015 Location: Dallas iTrader: (0)	Thanks for the input. If I wanted to stay with staggered setup, what issues (if any) would I face if I did put 245/40's on my rear factory wheels? Speedo off a little? (it is from the factory anyways) anything else?
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12-29-2015, 09:48 AM	#5
Bleeped Private 14 Rep 44 Posts Drives: 2014 M235 Join Date: Jul 2015 Location: Dallas iTrader: (0)	will this trigger any dash lights since the rears would be taller than the fronts? Factory staggered the fronts are actually larger in diameter than rears.
	Appreciate 0 Quote