Tire sizes

john32443 · 04-15-2015, 08:28 AM

Hey guys,

Got a set of VMRs V718s 18x8.5 et 45 for the fronts and a 18x9.5 et50. For tires I'm going with a Re760 Sports. Quick question, for the rear, on my tire guys's recommendation, I got 245/35 ordered, but I was thinking of swapping the order and getting 255/35, what do you guys think?

My car: 128i, stock, non-m sport suspension

maukm3 · 04-15-2015, 08:37 AM

255/35

02rsxpilot · 04-15-2015, 10:51 AM

Will make little to no difference, but I'd stick with the 245s. Your 128i almost certainly does not need more rear grip. At least going 225/40 (they don't sell 760s in the OEM 215 size) and 245/35 will help in a small way with the factory understeer. FWIW, this is the exact setup I'll be switching to in the next few months.

jaximointhecut · 04-23-2015, 08:45 PM

depends on the tires you get. 245's on a 9.5 wheel would be stretched on some brands. I have 255 on my 9.5's.

here:

http://www.1addicts.com/forums/showthread.php?t=647375

225f 255r - post #44

John_01 · 04-24-2015, 01:04 AM

I suggest 255/35/18 will be a better fit for 9.5" rims.

Pyrat 2 · 04-24-2015, 07:09 AM

If it's not too late get an 8.5-et45 for the rear if you want to run a 245 which is plenty for the 128. It also gives you flexibility to go fully square in the future with 245 all around.

ShocknAwe · 04-24-2015, 08:38 AM

For the 128 I would definitely recommend sorting things out and going 245 square.

john32443 · 04-24-2015, 11:36 AM

I got a 225/40s in the front on 8.5, and 255/30 in the backs on 9.5. Ya, they tire doesn't fully cover the back or the front

I went with bridgestone re760s

Olgeezer1 · 05-03-2015, 09:56 PM

I dunno. Seems like too much wheel & tire both for the 128. I switched from the 215/245 setup the car came with to 225/40/18 all around. Much better setup IMO for the 128's power. Better balance, less understeer.

04-15-2015, 08:28 AM	#1
john32443 Second Lieutenant 5 Rep 217 Posts Drives: 128i Join Date: Apr 2013 Location: Ontario iTrader: (0)	Tire sizes Hey guys, Got a set of VMRs V718s 18x8.5 et 45 for the fronts and a 18x9.5 et50. For tires I'm going with a Re760 Sports. Quick question, for the rear, on my tire guys's recommendation, I got 245/35 ordered, but I was thinking of swapping the order and getting 255/35, what do you guys think? My car: 128i, stock, non-m sport suspension
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04-15-2015, 08:37 AM	#2
maukm3 Registered 0 Rep 1 Posts Drives: 1988 ///M3 Join Date: Apr 2014 Location: Streamwood, IL iTrader: (0)	255/35
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04-15-2015, 10:51 AM	#3
02rsxpilot First Lieutenant 47 Rep 327 Posts Drives: 2012 BMW 135i Join Date: Apr 2013 Location: NorCal iTrader: (2) Garage List 2012 BMW 135i [10.00] 2013 Mini Cooper S [0.00] 2002 Acura RSX [0.00]	Will make little to no difference, but I'd stick with the 245s. Your 128i almost certainly does not need more rear grip. At least going 225/40 (they don't sell 760s in the OEM 215 size) and 245/35 will help in a small way with the factory understeer. FWIW, this is the exact setup I'll be switching to in the next few months. __________________ 2012 BMW 135i DCT - M3 Front Control Arms, Whiteline RSFB, Dinan camber plates.
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04-23-2015, 08:45 PM	#4
jaximointhecut Lieutenant 74 Rep 412 Posts Drives: 2015 m235i Join Date: Jun 2013 Location: New Orleans/South FL iTrader: (0)	depends on the tires you get. 245's on a 9.5 wheel would be stretched on some brands. I have 255 on my 9.5's. here: http://www.1addicts.com/forums/showthread.php?t=647375 225f 255r - post #44 __________________ 2015 m235i 6mt
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04-24-2015, 01:04 AM	#5
John_01 Colonel 232 Rep 2,643 Posts Drives: E90 325i, E82 135i Join Date: Mar 2009 Location: Sydney, Australia iTrader: (0)	I suggest 255/35/18 will be a better fit for 9.5" rims.
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04-24-2015, 07:09 AM	#6
Pyrat 2 Colonel 1418 Rep 2,560 Posts Drives: Rapidly from A to B Join Date: Jun 2005 Location: Chicago 'burbs or TN Smokies iTrader: (3) Garage List 2022 Porsche GT4 [9.64] 2018 Porsche GT3 [9.33] 2007 Z4 M Roadster [8.33] 2020 BMW X1 [0.00]	If it's not too late get an 8.5-et45 for the rear if you want to run a 245 which is plenty for the 128. It also gives you flexibility to go fully square in the future with 245 all around. __________________ '07 Z4MR '22 GT4 '18 GT3 '16 GT4, '16 M2, '14 X1, '13 135is, '06 330i, '03 323 Ci, '01 330i, '99 M3 (RIP), '96 318is, some non-BMWs
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04-24-2015, 08:38 AM	#7
ShocknAwe 1Addict 3233 Rep 7,893 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	For the 128 I would definitely recommend sorting things out and going 245 square. __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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04-24-2015, 11:36 AM	#8
john32443 Second Lieutenant 5 Rep 217 Posts Drives: 128i Join Date: Apr 2013 Location: Ontario iTrader: (0)	I got a 225/40s in the front on 8.5, and 255/30 in the backs on 9.5. Ya, they tire doesn't fully cover the back or the front I went with bridgestone re760s
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05-03-2015, 09:56 PM	#9
Olgeezer1 Lieutenant 183 Rep 505 Posts Drives: 2010 128i 6MT Sport Pkg. 18" Join Date: Jul 2013 Location: Ottawa, Canada iTrader: (0) Garage List 2010 E82 128i N52 [0.00]	I dunno. Seems like too much wheel & tire both for the 128. I switched from the 215/245 setup the car came with to 225/40/18 all around. Much better setup IMO for the 128's power. Better balance, less understeer.
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