215/45R17 as winter setup

pupsterdo · 10-15-2012, 08:03 PM

Is going from 225/45-17 to 215/45-17 all around on my 328xi going to do any damage to transfercase or XI system since the overall diameter is 9mm less than stock?

psmitty95 · 10-15-2012, 09:41 PM

If it is a square setup you have no issue. The only time theres an issue is if you run staggered with more than a 1% rolling diameter difference. I run 235/35/19 in the front and 265/30/19 in the back during the summer. In a few weeks i'm switching to my winter setup which will be a square 225/45/17 setup.

pupsterdo · 10-16-2012, 02:17 AM

so even though its a -1.4% difference, since all 4 will be the same overall circumference, it's not going to be a problem?

zshopa · 10-16-2012, 08:21 AM

thats what i run in the winter, no issues. just make sure they are all the same size.

your speedo will be off by that 1.4% really minimal difference. dont worry about it.

ajsalida · 10-16-2012, 09:04 AM

Quote:

Originally Posted by pupsterdo

so even though its a -1.4% difference, since all 4 will be the same overall circumference, it's not going to be a problem?

It is the relative difference between front/back axle or side/side tire size (and it is diameter/rolling circumference not width) they are talking about with the %, not the overall difference between 4 identical stock tires and 4 of something else.

A large difference cause different rates of rotation (slip) within the drive train, and this causes problems beyond a certain point.

zipstic · 10-16-2012, 11:58 AM

Go for it!

I'm actually surprised more xi/X-Drive guys don't run this size in the winter if they're running 17's.

psmitty95 · 10-16-2012, 02:23 PM

Quote:

Originally Posted by pupsterdo

so even though its a -1.4% difference, since all 4 will be the same overall circumference, it's not going to be a problem?

The only percent that matters is the difference between front and rear. The difference from the OEM wheels to the new ones don't effect anything

Quote:

Originally Posted by zipstic

Go for it!

I'm actually surprised more xi/X-Drive guys don't run this size in the winter if they're running 17's.

Is 215 better than running 225's? I just ordered tireracks recommended winter wheel and tire size and it was 225/45/17...

pupsterdo · 10-16-2012, 03:34 PM

215 is better than 225 for a winter setup since it is narrower.

wahooooman · 10-17-2012, 10:49 AM

Quote:

Originally Posted by psmitty95

Is 215 better than running 225's? I just ordered tireracks recommended winter wheel and tire size and it was 225/45/17...

215 is better because this

Quote:

Originally Posted by pupsterdo

215 is better than 225 for a winter setup since it is narrower.

+1, because from what i understand is its less tire going trough the snow so it wont compact as much forming a slippery snow sheet! i have no idea if its really that much of a difference though, who knows?

zipstic · 10-17-2012, 04:11 PM

Yep, narrower tires are better at cutting through the snow opposed to smushing it down with a wider tire. Wider tires tend to perform better on ice so there is that tradeoff.

psmitty95 · 10-17-2012, 09:28 PM

That's true but 225 are narrow enough for me. Sad to lose my nice staggered look but its only for a few months. The wheels came today and I actually can't wait to put them on.

wahooooman · 10-18-2012, 10:20 AM

Quote:

Originally Posted by psmitty95

That's true but 225 are narrow enough for me. Sad to lose my nice staggered look but its only for a few months. The wheels came today and I actually can't wait to put them on.

thats true 225 will do just fine, ^^ nice setup those look good.

abhishriv · 10-18-2012, 10:44 AM

Quote:

Originally Posted by psmitty95

That's true but 225 are narrow enough for me. Sad to lose my nice staggered look but its only for a few months. The wheels came today and I actually can't wait to put them on.

i have the EXACT same setup for winter! had them on for a couple winters now. make sure you get hubcentric rings for them if they didnt come with the rims.

psmitty95 · 10-18-2012, 01:43 PM

Quote:

Originally Posted by wahooooman

thats true 225 will do just fine, ^^ nice setup those look good.

Thanks, i'm actually excited for it to snow now

Quote:

Originally Posted by abhishriv

i have the EXACT same setup for winter! had them on for a couple winters now. make sure you get hubcentric rings for them if they didnt come with the rims.

I'm pretty sure it came with they came with them... I ordered from tirerack so it's supposed to come with everything needed to make them fit

wdeerfield · 10-19-2012, 07:36 PM

Usually you go narrower but taller sidewall. 10mm isn't going to make much of a difference traction wise. Smitty, going to space em? Wider track is better

psmitty95 · 10-19-2012, 08:23 PM

Quote:

Originally Posted by wdeerfield

Usually you go narrower but taller sidewall. 10mm isn't going to make much of a difference traction wise. Smitty, going to space em? Wider track is better

Ehh I wasn't planning on spacing them although I probably should, right?

wdeerfield · 10-19-2012, 08:29 PM

Quote:

Originally Posted by psmitty95

Ehh I wasn't planning on spacing them although I probably should, right?

depends on the offset of the wheels

psmitty95 · 10-19-2012, 08:32 PM

Quote:

Originally Posted by wdeerfield

depends on the offset of the wheels

I think they're just 17x8

wdeerfield · 10-19-2012, 08:37 PM

Quote:

Originally Posted by psmitty95

I think they're just 17x8

smitty.. you are better than that.. offset is not rim diameter and width..

offset is 32. youll be fine without spacers. should look good!

psmitty95 · 10-19-2012, 08:57 PM

Quote:

Originally Posted by wdeerfield

smitty.. you are better than that.. offset is not rim diameter and width..

offset is 32. youll be fine without spacers. should look good!

Whoops that's an embarrassing mistake

... Hahaha they didn't put the offsets on the invoice so I just gave you the only numbers I saw. Sad part is I knew that wasn't offset but for some reason I wrote it anyways... On another note i'm really excited to mount them and get some snow. I should have some videos of some fun in the snow with my buddies STi and B6 S4

josh_b · 10-26-2012, 12:18 AM

Anyone with thoughts on the pirelli sottozero vs the Dunlop winter sports? Will prob get run flats...

drevil2k2 · 10-29-2012, 03:32 PM

Quote:

Originally Posted by josh_b

Anyone with thoughts on the pirelli sottozero vs the Dunlop winter sports? Will prob get run flats...

Just bought the Pirelli Sottozero Serie II W210 Runflats. Just personal preference and price for me. Wanted the W240 for the XL and V speed rating, but opted for runflats for convenience.

Heard good reviews of both tires, so probably can't go wrong with either.

10-15-2012, 08:03 PM	#1
pupsterdo Private First Class 8 Rep 135 Posts Drives: 07 e92 Join Date: Sep 2012 Location: USA iTrader: (1)	215/45R17 as winter setup Is going from 225/45-17 to 215/45-17 all around on my 328xi going to do any damage to transfercase or XI system since the overall diameter is 9mm less than stock?
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10-15-2012, 09:41 PM	#2
psmitty95 Brigadier General 578 Rep 4,393 Posts Drives: '23 M340i xDrive Join Date: Jan 2012 Location: Boston, MA iTrader: (11)	If it is a square setup you have no issue. The only time theres an issue is if you run staggered with more than a 1% rolling diameter difference. I run 235/35/19 in the front and 265/30/19 in the back during the summer. In a few weeks i'm switching to my winter setup which will be a square 225/45/17 setup. __________________ < Click picture for photoshoot E90 335i xDrive 6spd, Nav, Prem, Cold Weather, & Sports package - Msport Conversion Mods: JB4 + MHD, Doc Race ST, Pure 6266, AD-Eng PI/Mounts, Fuel-It st. 3, Custom Exhaust, Tuned by TwistedTuning More Pictures: Build Thread /// 683AWHP/675AWTQ
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10-16-2012, 02:17 AM	#3
pupsterdo Private First Class 8 Rep 135 Posts Drives: 07 e92 Join Date: Sep 2012 Location: USA iTrader: (1)	so even though its a -1.4% difference, since all 4 will be the same overall circumference, it's not going to be a problem?
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10-16-2012, 08:21 AM	#4
zshopa Driver 1 Rep 30 Posts Drives: 2006 330XI Join Date: Nov 2011 Location: NJ iTrader: (0)	thats what i run in the winter, no issues. just make sure they are all the same size. your speedo will be off by that 1.4% really minimal difference. dont worry about it.
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10-16-2012, 11:58 AM	#6
zipstic Major 484 Rep 1,188 Posts Drives: 2008 e92 335xi Join Date: Sep 2011 Location: Minneapolis iTrader: (1) Garage List 2008 335xi Coupe [10.00]	Go for it! I'm actually surprised more xi/X-Drive guys don't run this size in the winter if they're running 17's. __________________ http://www.ishopwheels.com
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10-16-2012, 03:34 PM	#8
pupsterdo Private First Class 8 Rep 135 Posts Drives: 07 e92 Join Date: Sep 2012 Location: USA iTrader: (1)	215 is better than 225 for a winter setup since it is narrower.
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10-17-2012, 04:11 PM	#10
zipstic Major 484 Rep 1,188 Posts Drives: 2008 e92 335xi Join Date: Sep 2011 Location: Minneapolis iTrader: (1) Garage List 2008 335xi Coupe [10.00]	Yep, narrower tires are better at cutting through the snow opposed to smushing it down with a wider tire. Wider tires tend to perform better on ice so there is that tradeoff. __________________ http://www.ishopwheels.com
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10-17-2012, 09:28 PM	#11
psmitty95 Brigadier General 578 Rep 4,393 Posts Drives: '23 M340i xDrive Join Date: Jan 2012 Location: Boston, MA iTrader: (11)	That's true but 225 are narrow enough for me. Sad to lose my nice staggered look but its only for a few months. The wheels came today and I actually can't wait to put them on. __________________ < Click picture for photoshoot E90 335i xDrive 6spd, Nav, Prem, Cold Weather, & Sports package - Msport Conversion Mods: JB4 + MHD, Doc Race ST, Pure 6266, AD-Eng PI/Mounts, Fuel-It st. 3, Custom Exhaust, Tuned by TwistedTuning More Pictures: Build Thread /// 683AWHP/675AWTQ
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10-19-2012, 07:36 PM	#15
wdeerfield A family of bimmers 2745 Rep 7,741 Posts Drives: '18 G01 X3M40i Join Date: Jan 2012 Location: Clifton Park, NY iTrader: (0)	Usually you go narrower but taller sidewall. 10mm isn't going to make much of a difference traction wise. Smitty, going to space em? Wider track is better __________________ 2018 PB/Black G01 X3M40i \| 699M \| ZDA \| ZPP \| ZPX \| Maxton front lip \| X3M vents \| 15mm Spacers \| Diamond G20 style grills
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10-26-2012, 12:18 AM	#21
josh_b New Member 0 Rep 16 Posts Drives: 335 xdrive E92 '12 Join Date: Jan 2012 Location: Seattle iTrader: (0)	Anyone with thoughts on the pirelli sottozero vs the Dunlop winter sports? Will prob get run flats...
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