Running staggered 18's on an xi

LionOfGosforth · 09-12-2011, 10:10 AM

Posting in here as well as the tire forum as the question is kind of specific to xi's.

I've just recently purchased the OEM 313 style wheels in 18" staggered with sizes 18x8 ET:34 and 18x8.5 ET:37. I'm now trying to decide which tires to mount on them. I like what i've read about the Continental ExtremeContact DWS tires but am unsure on the best size. It's been recommended to me to stay with OEM size which would be 225/40/18 on the fronts and 255/35/18 on the rear.

However, I keep reading how the Continental's are a little on the narrow side so was wondering if I could also do 235/40/18 on the front and 265/35/18 on the rear? My main consideration/question is that I have an xi so wanted to ask, anyone on here running a similar setup or can give me a definitive answer on what size tires would be best with an xi in staggered 18 setup?

Thanks!

4corners · 09-12-2011, 11:20 AM

You do want to get the most grip you can up front on xi's to help with the characteristic under-steer.

LionOfGosforth · 09-12-2011, 11:49 AM

Quote:

Originally Posted by 4corners

You do want to get the most grip you can up front on xi's to help with the characteristic under-steer.

So you're recommending 235/40/18 and 263/35/18 in this case?

4corners · 09-12-2011, 12:20 PM

235/40 18f and 265/35 18r - 25.4/25.3 inches respectively. Good match, good fit.

fefo25 · 09-12-2011, 07:43 PM

Im running 225-45-18 front 255-40-18 rear on a 325 xi. Much better ride. No rubbing

Pcemkr · 09-15-2011, 01:58 PM

265 on 8.5" is out of spec. Reverse stretch = bulge.

Doyle · 09-15-2011, 02:37 PM

Quote:

Originally Posted by Pcemkr

265 on 8.5" is out of spec. Reverse stretch = bulge.

+1. 225 & 255 is the best you can do with those wheels.

Kruz · 09-15-2011, 03:07 PM

+2 on the bulge....
I went 265/35r but with a 9.5".

Pcemkr · 09-15-2011, 03:31 PM

I went 265/35 but on an 11"

LionOfGosforth · 09-15-2011, 03:42 PM

225+255 it is, thanks all

derek1822 · 10-05-2011, 08:03 PM

i've got a 09-335i xdrive, all on 235/35/19, i am thinking just get 255 or 265/30/19 tires for the rear, would it works?? thx

09-12-2011, 10:10 AM	#1
LionOfGosforth Private First Class 5 Rep 180 Posts Drives: 2009 335xi coupe Join Date: Feb 2011 Location: Connecticut iTrader: (3)	Running staggered 18's on an xi Posting in here as well as the tire forum as the question is kind of specific to xi's. I've just recently purchased the OEM 313 style wheels in 18" staggered with sizes 18x8 ET:34 and 18x8.5 ET:37. I'm now trying to decide which tires to mount on them. I like what i've read about the Continental ExtremeContact DWS tires but am unsure on the best size. It's been recommended to me to stay with OEM size which would be 225/40/18 on the fronts and 255/35/18 on the rear. However, I keep reading how the Continental's are a little on the narrow side so was wondering if I could also do 235/40/18 on the front and 265/35/18 on the rear? My main consideration/question is that I have an xi so wanted to ask, anyone on here running a similar setup or can give me a definitive answer on what size tires would be best with an xi in staggered 18 setup? Thanks! __________________ 09 BSM E92 335xi\|\|Black Dakota\|\|Dark Glacier Aluminum Trim 313 Perf. Wheels\|\|LUX H8's
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09-12-2011, 11:20 AM	#2
4corners Major 398 Rep 1,133 Posts Drives: 2008 Jet Black M3 Coupe Join Date: Feb 2011 Location: Yucca Valley, CA - Kelowna, BC iTrader: (0) Garage List 2003 Blue Bird TC2000 [0.00] 2005 BMW 325Ci [0.00] 2008 BMW M3 [0.00]	You do want to get the most grip you can up front on xi's to help with the characteristic under-steer.
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09-12-2011, 12:20 PM	#4
4corners Major 398 Rep 1,133 Posts Drives: 2008 Jet Black M3 Coupe Join Date: Feb 2011 Location: Yucca Valley, CA - Kelowna, BC iTrader: (0) Garage List 2003 Blue Bird TC2000 [0.00] 2005 BMW 325Ci [0.00] 2008 BMW M3 [0.00]	235/40 18f and 265/35 18r - 25.4/25.3 inches respectively. Good match, good fit.
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09-12-2011, 07:43 PM	#5
fefo25 Second Lieutenant 17 Rep 261 Posts Drives: 2006 325xi wagon Join Date: Jul 2011 Location: NJ iTrader: (0)	Im running 225-45-18 front 255-40-18 rear on a 325 xi. Much better ride. No rubbing
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09-15-2011, 01:58 PM	#6
Pcemkr Pro Hater 49 Rep 1,717 Posts Drives: Low and slow Join Date: Apr 2011 Location: DC iTrader: (1)	265 on 8.5" is out of spec. Reverse stretch = bulge.
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09-15-2011, 03:07 PM	#8
Kruz Major 22 Rep 1,083 Posts Drives: 2021 M2C 6MT Join Date: Jun 2007 Location: Chicagoland iTrader: (4) Garage List My garage spot [0.00] 07/07 BMW 335xi [8.50] 2001 Honda CBR600F4i [0.00] 2007 Husqvarna SM610 [0.00] 2004 Chevy Tahoe Z71 [0.00] 2005 Harley Davidso ... [0.00] 2007.9 335xi [6.50]	+2 on the bulge.... I went 265/35r but with a 9.5". __________________ 2021 BMW M2 Competition, BSM, Exec Pkg, 6MT GONE:07/07 E90 335xi SG Black Dakota\|Alum\|ZSP\|2AB\|ZPP\|ZCW\|Nav\|CA\|6FL\|PDC\| Blacklines\|3M Summers: 235/40/18 265/35/18 Hankook Ventus V12 on VMR 701s A/S: 225/40/18 255/35/18 Pirelli PZero Nero M+S on OEM 162s
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09-15-2011, 03:31 PM	#9
Pcemkr Pro Hater 49 Rep 1,717 Posts Drives: Low and slow Join Date: Apr 2011 Location: DC iTrader: (1)	I went 265/35 but on an 11"
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09-15-2011, 03:42 PM	#10
LionOfGosforth Private First Class 5 Rep 180 Posts Drives: 2009 335xi coupe Join Date: Feb 2011 Location: Connecticut iTrader: (3)	225+255 it is, thanks all __________________ 09 BSM E92 335xi\|\|Black Dakota\|\|Dark Glacier Aluminum Trim 313 Perf. Wheels\|\|LUX H8's
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10-05-2011, 08:03 PM	#11
derek1822 Private 44 Rep 73 Posts Drives: 2009,335xi, 19" GS1... Join Date: Aug 2009 Location: Vancouver,BC iTrader: (2) Garage List 2009 335i Xdrive E90 [0.00]	i've got a 09-335i xdrive, all on 235/35/19, i am thinking just get 255 or 265/30/19 tires for the rear, would it works?? thx
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