e90 tyre size on 8j rims

hawk · 09-29-2011, 03:29 AM

Hi i have brought a e90 2008 320d se which has had 8j x 18 (et 37) aftermarket wheels fitted.Presently the tyres fitted are 225x40x18's front rear.

I have fitted 15mm spacers to the rear and would like to have a staggered setup, could you advice the recommended tyre sizes for the rear if i keep the original 225x40x18's on the front.

i was considering 245x40x18,245x35x18 or the original 255x35x18 as fitted to the m sport models.

I would like to keep the gearing as close as possible to the original for the speedo.

Could anyone advice on the tyre pressures for the original setup and the staggered setup. i am presently running psi 35f and 38r.

Thank you

remmib · 09-29-2011, 05:11 AM

I wouldn't bother with a staggered tyre set up on 18x8 wheels.

anerbe · 09-29-2011, 07:31 AM

^ agreed - you can run a 235/40R18 or max 245/35R18 square setup. You should keep a square setup to allow rotation of the tires front/rear to get more miles and even wear. The vehicle will be more balanced as well.

VMRWheels · 09-29-2011, 11:26 AM

I would probably recommend sticking with the 225 or a 235 tire all around so that you can rotate the wheels down the road.

-Charles@VMRWheels

hawk · 10-01-2011, 03:41 PM

thanks for views, will probably go for 235/40/18's all round.Any recommended tyre pressures for high speed driving 4 up, or should i use the 255/35/18 settings.

thanks

anerbe · 10-03-2011, 08:21 AM

run pressures between the 225 and 255 recommended values. higher for more high speed driving, lower for better comfort.

09-29-2011, 03:29 AM	#1
hawk Registered 0 Rep 4 Posts Drives: Bmw e90 320d 2008 Join Date: Aug 2011 Location: Stoke on Trent, UK iTrader: (0)	e90 tyre size on 8j rims Hi i have brought a e90 2008 320d se which has had 8j x 18 (et 37) aftermarket wheels fitted.Presently the tyres fitted are 225x40x18's front rear. I have fitted 15mm spacers to the rear and would like to have a staggered setup, could you advice the recommended tyre sizes for the rear if i keep the original 225x40x18's on the front. i was considering 245x40x18,245x35x18 or the original 255x35x18 as fitted to the m sport models. I would like to keep the gearing as close as possible to the original for the speedo. Could anyone advice on the tyre pressures for the original setup and the staggered setup. i am presently running psi 35f and 38r. Thank you Last edited by hawk; 09-29-2011 at 03:36 AM..
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09-29-2011, 05:11 AM	#2
remmib General 1569 Rep 29,202 Posts Drives: 2013 F10 520d M-Sport Join Date: Feb 2006 Location: Norway iTrader: (0)	I wouldn't bother with a staggered tyre set up on 18x8 wheels. __________________ F10 520d M-Sport Alpine White \| HRE P43SC 20x9+20x11 \| Michelin PSS 255/35+295/30 \| KW V3 Coilover \| M5 Front Sway Bar + M550d Rear Sway Bar \| 3DDesign Front Lip \| BMW M Performance CF Spoiler \| BMW M Performance Diffuser \| BMW M Performance Black Grills \| BMW M Performance Pedals \|
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09-29-2011, 07:31 AM	#3
anerbe Lieutenant Colonel 121 Rep 1,568 Posts Drives: Red E90M 6MT Join Date: Dec 2006 Location: BH, MI iTrader: (2)	^ agreed - you can run a 235/40R18 or max 245/35R18 square setup. You should keep a square setup to allow rotation of the tires front/rear to get more miles and even wear. The vehicle will be more balanced as well.
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09-29-2011, 11:26 AM	#4
VMRWheels BimmerPost Supporting Vendor 2042 Rep 25,989 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	I would probably recommend sticking with the 225 or a 235 tire all around so that you can rotate the wheels down the road. -Charles@VMRWheels __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
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10-01-2011, 03:41 PM	#5
hawk Registered 0 Rep 4 Posts Drives: Bmw e90 320d 2008 Join Date: Aug 2011 Location: Stoke on Trent, UK iTrader: (0)	Thanks thanks for views, will probably go for 235/40/18's all round.Any recommended tyre pressures for high speed driving 4 up, or should i use the 255/35/18 settings. thanks
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10-03-2011, 08:21 AM	#6
anerbe Lieutenant Colonel 121 Rep 1,568 Posts Drives: Red E90M 6MT Join Date: Dec 2006 Location: BH, MI iTrader: (2)	run pressures between the 225 and 255 recommended values. higher for more high speed driving, lower for better comfort.
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