xi's and wheels

hov333 · 10-22-2007, 12:49 AM

Can we get a sticky or something for people with xi's who want to see what sizes of wheels will work without messing up the differential?? ok the difference is supposed to be less than 1% between wheelspin of front and back. how do you calculate this?? how does "stagger" affect wheel spin? does it spin less or something? sorry i'm a newb at xi's I'm coming from an e46 m3 so i never had to worry about this issue.

Thanks guys

halB · 10-22-2007, 12:52 AM

Just use the Tire Rack calculator at the top of this page to figure out whether the front and rear overall diameters are within 1% of each other. If the difference is more than 1% you risk frying the multiplate clutches in the transfer case.

hov333 · 10-22-2007, 05:28 PM

yea but it doesnt have space to put both front and back measurements. would u just put like front where it says old wheel measurement and the rear where it says new wheel measurement?

VMRWheels · 10-22-2007, 07:46 PM

Yes that would be the best way to do it.

Also, stagger does not affect the xi, nor does it affect the 1% criterion that you are striving for. Just find the proper tire sizes and you're all set.

S_M · 10-22-2007, 07:57 PM

Please do sticky something so people stop creating hundreds of the same thread regarding the issue...

hov333 · 10-23-2007, 12:37 AM

what about getting a negative value for the difference? is this ok? like -0.5% or something...?

Poderes1 · 10-23-2007, 06:31 AM

make Sure You Get Hubcentric Rings

dmichael · 10-23-2007, 06:51 AM

If your worried about BMW warranty, use the BMW approved sizes in the manual

douger · 10-24-2007, 09:49 PM

Great idea to make a sticky sectio for xi people looking to run non OEM set ups. I recommend you actually pysically measure the tires. The wheel calculator is is mathmatically correct, however does not take into consideration manufacuring variances and variances among different manufacturers. I found out the hard way!

http://www.e90post.com/forums/showth...ghlight=douger

hov333 · 10-25-2007, 01:13 PM

We really need a sticky for XI wheels and general discussion. Any input about putting 20's on a 335xi?? anyone had any problems?

hov333 · 05-08-2008, 08:48 PM

how can i measure the circumference of my wheels by hand? (so I dont have to use the calculator on the top of the screen)

hov333 · 05-08-2008, 09:29 PM

bump

10-22-2007, 12:49 AM	#1
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	xi's and wheels Can we get a sticky or something for people with xi's who want to see what sizes of wheels will work without messing up the differential?? ok the difference is supposed to be less than 1% between wheelspin of front and back. how do you calculate this?? how does "stagger" affect wheel spin? does it spin less or something? sorry i'm a newb at xi's I'm coming from an e46 m3 so i never had to worry about this issue. Thanks guys
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10-22-2007, 12:52 AM	#2
halB Colonel 58 Rep 2,384 Posts Drives: W211 E350 4M MkV GTI 987.2 S Join Date: Jan 2007 Location: Just north of Toronto iTrader: (0)	Just use the Tire Rack calculator at the top of this page to figure out whether the front and rear overall diameters are within 1% of each other. If the difference is more than 1% you risk frying the multiplate clutches in the transfer case. __________________ 07 E93 335i - Returned at lease end 09 W211 E350 4Matic Avant Garde - Blk/Blk, AMG pkg w/18". Sport Susp. F1 Asym. Debadged. 09 MkV GTI w/Leather & 18" Huffs. F1 Asym 10 987.2 S w/Leather sport seat, Sport Chrono, 19" Carrera S II wheels
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10-22-2007, 05:28 PM	#3
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	yea but it doesnt have space to put both front and back measurements. would u just put like front where it says old wheel measurement and the rear where it says new wheel measurement?
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10-22-2007, 07:46 PM	#4
VMRWheels BimmerPost Supporting Vendor 2124 Rep 25,972 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]	Yes that would be the best way to do it. Also, stagger does not affect the xi, nor does it affect the 1% criterion that you are striving for. Just find the proper tire sizes and you're all set. __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
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10-22-2007, 07:57 PM	#5
S_M Lieutenant 69 Rep 550 Posts Drives: Many Join Date: Jul 2007 Location: X5 iTrader: (0)	Please do sticky something so people stop creating hundreds of the same thread regarding the issue...
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10-23-2007, 12:37 AM	#6
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	what about getting a negative value for the difference? is this ok? like -0.5% or something...?
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10-23-2007, 06:31 AM	#7
Poderes1 Lieutenant 25 Rep 501 Posts Drives: 2008 E92 335i Join Date: Apr 2006 Location: PSL, Florida iTrader: (1) Garage List 2008 BMW 335i [0.00] 2006 BMW 325xi [0.00]	make Sure You Get Hubcentric Rings __________________ 08 E92 335 i AW/CR, Alum Trim, Prem & Sport Pkgs, Step w/Paddles, Nav, 3M 20% tint all around, Passport 9500i radar, JB3 v2.0 with USB, Matte Black Grills, RPI Ram Air Scoops, OSS Full Blackout Angels V2, LED Turnsignals and sidemarkers, Helix V2 Stepped Front Mount Intercooler, Bastuck Quad Exhaust, Custom rear valence, Forged 1 Eight Deep Concaves Coral Red/Matte Black centers and Gloss Black Barrels 20x8.5f and 20x10.5r
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10-23-2007, 06:51 AM	#8
dmichael Lieutenant 31 Rep 452 Posts Drives: 2011 GTI Join Date: Jun 2007 Location: Massachusetts iTrader: (1)	If your worried about BMW warranty, use the BMW approved sizes in the manual __________________ 2008 E90 328i - Sparkling Graphite/Terra/Dark Burl, 6MT, Sport, Premuim, Fold-down seats, iPod/USB(6FL). M-Sport Steering Wheel, ZHP M-Sport Shift knob, Euro fog lights. Euro Split Armrest
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10-24-2007, 09:49 PM	#9
douger Private First Class 11 Rep 139 Posts Drives: E90 328xi Join Date: Nov 2006 Location: Seattle iTrader: (1)	Great idea to make a sticky sectio for xi people looking to run non OEM set ups. I recommend you actually pysically measure the tires. The wheel calculator is is mathmatically correct, however does not take into consideration manufacuring variances and variances among different manufacturers. I found out the hard way! http://www.e90post.com/forums/showth...ghlight=douger
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10-25-2007, 01:13 PM	#10
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	We really need a sticky for XI wheels and general discussion. Any input about putting 20's on a 335xi?? anyone had any problems?
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05-08-2008, 08:48 PM	#11
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	how can i measure the circumference of my wheels by hand? (so I dont have to use the calculator on the top of the screen)
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05-08-2008, 09:29 PM	#12
hov333 Major 69 Rep 1,003 Posts Drives: 2016 M5 Join Date: Sep 2007 Location: Boston, MA iTrader: (1)	bump
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