XI and wheel??

fefo25 · 01-11-2012, 10:24 PM

Im currently running a square set of 18x9 oem M3 wheels with 225/45/18 front and 255/40/18 in the rear. I went to a tire shop today and asked the salesman about getting 255/40 /18 in the front to match the rear. He said its not a good idea because it would probably rub when I turn. That fine, so when I asked him what would be the perfect square tire setup, he made a phone call. As per the person on the phone, on an XI, I should not have 18x9 it must be 18x8 with 225/40/18 all around and if I stay with 18x9 he wouldn't recommend any tire size because it will mess up my differentials. How true is this?? Any feedback would help....

Sam335ix · 01-11-2012, 10:37 PM

My winter set up is 235/40/18 all around and I am stock, car runs great.

Eko · 01-11-2012, 10:50 PM

i cannot think of any reason running square would mess up your diffs no matter what size they are.. unless you are running something super heavy and your axles cant handle it (thats just my theory.. anyone can correct me on that)... if anything your staggered setup would mess with your diff.. i come from the quattro family and running staggered has always been a big no no.. but ever since coming to the BMW XI family, i havnt seen anyone say dont do staggered.. so i wouldnt worry!

Eko · 01-11-2012, 10:52 PM

BTW i find it very odd you are running staggered tires on square wheels :P haha

fefo25 · 01-12-2012, 01:48 PM

Quote:

Originally Posted by Eko

BTW i find it very odd you are running staggered tires on square wheels :P haha

I first purchased a staggered setup then changed the fronts with 18x9 and kept the tires. thats why I went to the tire shop to get square tires

Yvette · 01-12-2012, 02:05 PM

how would 18x9 wheels and other than 225/40 tires mess up the differential?
if it is true, my plan need to change, I am planning to do 18x9.5 / 255 / 40 all around square setup.
Obviously I will widen the front.

Sleeper · 01-13-2012, 09:23 PM

Square wheels + square tires in any size = happy diff.

TL · 01-13-2012, 11:09 PM

i use to run
Front
225/40/18 with OEM 189 style wheels
Rear
255/35/18
But now i'm running
Front
225/40/18 with OEM 189 style wheels
Rear
235/40/18

First Day of 2012 by GQjai, on Flickr

01-11-2012, 10:24 PM	#1
fefo25 Second Lieutenant 16 Rep 261 Posts Drives: 2006 325xi wagon Join Date: Jul 2011 Location: NJ iTrader: (0)	XI and wheel?? Im currently running a square set of 18x9 oem M3 wheels with 225/45/18 front and 255/40/18 in the rear. I went to a tire shop today and asked the salesman about getting 255/40 /18 in the front to match the rear. He said its not a good idea because it would probably rub when I turn. That fine, so when I asked him what would be the perfect square tire setup, he made a phone call. As per the person on the phone, on an XI, I should not have 18x9 it must be 18x8 with 225/40/18 all around and if I stay with 18x9 he wouldn't recommend any tire size because it will mess up my differentials. How true is this?? Any feedback would help....
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01-11-2012, 10:37 PM	#2
Sam335ix Major 65 Rep 1,274 Posts Drives: 335 ix performance edition Join Date: Sep 2011 Location: Redskin Country iTrader: (0)	My winter set up is 235/40/18 all around and I am stock, car runs great.
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01-11-2012, 10:50 PM	#3
Eko Private First Class 3 Rep 103 Posts Drives: E90 335xi Join Date: May 2011 Location: Seattle iTrader: (0)	i cannot think of any reason running square would mess up your diffs no matter what size they are.. unless you are running something super heavy and your axles cant handle it (thats just my theory.. anyone can correct me on that)... if anything your staggered setup would mess with your diff.. i come from the quattro family and running staggered has always been a big no no.. but ever since coming to the BMW XI family, i havnt seen anyone say dont do staggered.. so i wouldnt worry! __________________ ----------------------------- 2008 335xi Montego Blue
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01-11-2012, 10:52 PM	#4
Eko Private First Class 3 Rep 103 Posts Drives: E90 335xi Join Date: May 2011 Location: Seattle iTrader: (0)	BTW i find it very odd you are running staggered tires on square wheels :P haha __________________ ----------------------------- 2008 335xi Montego Blue
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01-12-2012, 02:05 PM	#6
Yvette Major General 760 Rep 7,408 Posts Drives: M Join Date: Sep 2006 Location: Vancouver iTrader: (19)	how would 18x9 wheels and other than 225/40 tires mess up the differential? if it is true, my plan need to change, I am planning to do 18x9.5 / 255 / 40 all around square setup. Obviously I will widen the front.
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01-13-2012, 09:23 PM	#7
Sleeper . 660 Rep 1,059 Posts Drives: '23 BSM X5///MC Join Date: Dec 2011 Location: North iTrader: (1)	Square wheels + square tires in any size = happy diff.
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01-13-2012, 11:09 PM	#8
TL Brigadier General 283 Rep 3,102 Posts Drives: Happy on H&R coil overs Join Date: Jan 2009 Location: The Hub iTrader: (3) Garage List 2008 335xi [1.00]	i use to run Front 225/40/18 with OEM 189 style wheels Rear 255/35/18 But now i'm running Front 225/40/18 with OEM 189 style wheels Rear 235/40/18 First Day of 2012 by GQjai, on Flickr __________________ 2008 E92 335xi ------->Links to my Mods: H&R Street Performance Coil Overs \|\| 19" Alufelgen CS7 \|\| Interior Swap: Black to Coral Red My Website \|\| My Flickr \|\| My Tumblr \|\| My Twitter\|\| My Facebook\|\| My 500px
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