Need advice on tires for Gran Coupe

'17 750i Msport · 04-07-2014, 06:48 PM

Have the 245/40R19 Goodyear LS2 run flat grand touring tire that came stock on vehicle. Have the car 2 months and the ride is harsh and formed one bubble on side wall already. Was thinking of switching to NON run-flats. Goodyear has a 245/45R18 LS2 non run-flat version of this tire but because the sidewall aspect ratio is 45 instead of 40 the ride height is different. Does anyone think this would be a problem. I AM NOT concerned about performance. Thanks.

zoltans4 · 04-07-2014, 07:23 PM

there are few tires that exact specs as our stockers in non-rf form.

on the 19 with a little more sidewall I don't know what that would do to looks, but it would provide a nicer ride. using different height in tires will make your speedo show wrong if you care

04-07-2014, 06:48 PM	#1
'17 750i Msport Private First Class 22 Rep 100 Posts Drives: 2017 750i M Sport Join Date: Apr 2011 Location: New York iTrader: (0)	Need advice on tires for Gran Coupe Have the 245/40R19 Goodyear LS2 run flat grand touring tire that came stock on vehicle. Have the car 2 months and the ride is harsh and formed one bubble on side wall already. Was thinking of switching to NON run-flats. Goodyear has a 245/45R18 LS2 non run-flat version of this tire but because the sidewall aspect ratio is 45 instead of 40 the ride height is different. Does anyone think this would be a problem. I AM NOT concerned about performance. Thanks.
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04-07-2014, 07:23 PM	#2
zoltans4 Private First Class 7 Rep 151 Posts Drives: '14 650 coupe Join Date: Aug 2013 Location: las vegas iTrader: (0)	there are few tires that exact specs as our stockers in non-rf form. on the 19 with a little more sidewall I don't know what that would do to looks, but it would provide a nicer ride. using different height in tires will make your speedo show wrong if you care
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