XBimmers X1   XBimmers X1
  XBimmers X1

Go Back   XBimmers | BMW X1 Forum > BMW X1 Forums > General BMW X1 (E84) Forum

Post Reply
 
Thread Tools Search this Thread
      08-17-2014, 01:01 PM   #1
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Wider Tires on Style 421 Wheels?

Hey everybody. My friend is looking to go wider than the 225/45R18 that came on the Style 421 18" x 8" wheels. Anyone running something different with no issues, like 235 or 245? He'd like to keep it square.

Thanks!
Appreciate 0
      08-17-2014, 06:09 PM   #2
GTony
First Lieutenant
Australia
27
Rep
330
Posts

Drives: 2015 X3 F25 XDrive 28i M Sport
Join Date: Nov 2012
Location: Queensland

iTrader: (0)

Quote:
Originally Posted by bpplaysguitar View Post
Hey everybody. My friend is looking to go wider than the 225/45R18 that came on the Style 421 18" x 8" wheels. Anyone running something different with no issues, like 235 or 245? He'd like to keep it square.

Thanks!
Unfortunately not running something different but will be later.
I'm not sure if 421 style is 8"wide.
For an 8"wide wheel, they say the ideal tyre should be 225 - 235 and the max. tyre should be 245.
If you look at - 1010tyres, their Tyre Size Calculator you can compare all sorts of sizes.
245/40/18 seems to be the closest in Overall Diameter followed by 235/45/18.
The 245 would be nice and look good with more rubber on the road.
I would be talking to a number of tyre places to see what they say and in particular inside clearance.
Appreciate 0
      08-17-2014, 07:27 PM   #3
Twix
Lieutenant Colonel
Twix's Avatar
Canada
652
Rep
1,922
Posts

Drives: 2011 e91
Join Date: Jan 2013
Location: Calgary, AB, Canada

iTrader: (0)

Garage List
The 421 is in fact 8" wide. I would do 235 as a 245 would be hugely bulgy on that width of wheel.

Don't worry too much about keeping the tires the same diameter as the stock, just make sure they're all equal.

I'm running a staggered set up which is almost 1/2" larger than stock, no issues.
__________________
2011 E91
2016 M2 - Sold
2014 X1 - Sold
2002 Land Rover Discovery II - 3" lift & 33s
Appreciate 0
      08-17-2014, 11:24 PM   #4
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Thanks! I agree. My dad has a 650i (E64) and the stock wheels (now off and OEM M6 setup on) were 245/45R18 I think. I'm sure about the 245. Yeah a bit bulgy and the wheels were 8". I have 245 in front of my M3 (E46) on a 9" and it's good, if nearly slightly stretched looking, but almost no one was doing 255 up front. All seems to add up to 235 making the most sense. Thanks again.
Appreciate 0
      08-18-2014, 12:21 PM   #5
raulza
New Member
raulza's Avatar
1
Rep
16
Posts

Drives: BMW 3GT
Join Date: Jun 2014
Location: South Africa

iTrader: (0)

I run those wheels with 225/45/18 in front and changed to 255/40/18 at the rear with no problems. The 255 aren't bulging at all, in fact the fit the wheel quiet nicely and better than the 225
Attached Images
 
Appreciate 0
      08-18-2014, 01:43 PM   #6
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by raulza View Post
I run those wheels with 225/45/18 in front and changed to 255/40/18 at the rear with no problems. The 255 aren't bulging at all, in fact the fit the wheel quiet nicely and better than the 225
Very interesting. I don't think my friend wants to go staggered, so I wonder if 235 is about all you can safely fit up front. Any idea? He may go for staggered, who knows...
Appreciate 0
      08-18-2014, 01:46 PM   #7
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

And your wheels are all 8"?
Appreciate 0
      08-18-2014, 02:01 PM   #8
raulza
New Member
raulza's Avatar
1
Rep
16
Posts

Drives: BMW 3GT
Join Date: Jun 2014
Location: South Africa

iTrader: (0)

The reason I went with 255/40/18 at the rear was to stay within the same rolling diameter as the 225/45/18's, this way I have the same ride height as before. My installer showed me that 255 will fit on a 8J rim fine, visually they sit perfectly flush with the rim and don't bulge at all, I'm running the Pirelli RFT.

I haven't tried the 255's up front, so cannot say if they would touch but I doubt it. However if you go wider rim in front, 8.5J or 9J, then that could be a problem.

My 2 cents worth in anycase.
Appreciate 0
      08-18-2014, 08:40 PM   #9
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Thanks! I just talked with him. It seems he wants two things:

1. His stock wheels
2. A square setup (easy rotation, and he has x-drive so maybe AWD cars work better square)

So I think it's just a matter of seeing how wide a tire can safely fit up front if we know 255 fits the rear. I'm guessing he doesn't need them that wide. Instinct tells me 235 or 245, but if 255 square works, that's cool too.
Appreciate 0
      08-18-2014, 09:51 PM   #10
EpistemicConfusion
Likes Cars
0
Rep
56
Posts

Drives: X1 xDrive28i
Join Date: Apr 2012
Location: Washington

iTrader: (0)

Tire availability might be the problem if he is looking at 235/45 or even 245/45 *if* he wants to stay with RFT.

More options are available at 255
Appreciate 0
      08-18-2014, 10:27 PM   #11
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Quote:
Originally Posted by EpistemicConfusion View Post
Tire availability might be the problem if he is looking at 235/45 or even 245/45 *if* he wants to stay with RFT.

More options are available at 255
Oh yeah, forgot. Throwing the RFT idea away. Just normal tires. Thanks.
It seems that 235/45 would be fine, and going up to 245 (or 250) might justify a 40-series sidewall.
Appreciate 0
      08-19-2014, 04:57 PM   #12
GTony
First Lieutenant
Australia
27
Rep
330
Posts

Drives: 2015 X3 F25 XDrive 28i M Sport
Join Date: Nov 2012
Location: Queensland

iTrader: (0)

Sorry. Please see my new Thread " TYRE SIZES''. I registered and posted reply, it disappeared. I retyped and was told to put title. Not good with computers or maybe mine is getting a bit old in the tooth.
Appreciate 0
      08-19-2014, 05:43 PM   #13
Twix
Lieutenant Colonel
Twix's Avatar
Canada
652
Rep
1,922
Posts

Drives: 2011 e91
Join Date: Jan 2013
Location: Calgary, AB, Canada

iTrader: (0)

Garage List
I'm gonna tell you right now that a 245 will look like garbage on an 8" wheel. I have 235's on an 8.5" wheel on the front, and they look a bit bulgy. 235 on an 8" max, otherwise you'll look like a tard.

As for square set ups working better for AWD. Nothing will change really. BMW X-drive will adjust the torque to the tire with the most traction. The split varies from 40/60 f/r for a 28i and 20/80 f/r for a 35i. A staggered set up would actually work better on a 35i. The 28i won't lose or gain either way. But a staggered set up will always look much cooler than a square set up (opinionated).

The other thing to consider is the brand of tire. My factory RFT Pirellis looked stretched on the factory 421 wheel, where as my winter Blizzaks look flush. Same dimensions of rubber, one just has a different look to it. My Michelins on my aftermarket wheels have chunkier side walls which also has a different look.

If your friend wants a tuner look, buy a tuner tire. If he wants a flush "racing tire" look, buy a racing type tire etc etc. A good wheel/ tire shop will be able to really help him out with making a decision regarding his tire woes.
__________________
2011 E91
2016 M2 - Sold
2014 X1 - Sold
2002 Land Rover Discovery II - 3" lift & 33s
Appreciate 0
      08-21-2014, 07:48 PM   #14
bpplaysguitar
New Member
4
Rep
16
Posts

Drives: 2001 BMW M3
Join Date: Nov 2013
Location: Minnesota

iTrader: (0)

Nice info! His is the 28i xDrive...or something like that. There's a "28" in it and it's AWD.
Appreciate 0
      08-23-2014, 08:41 PM   #15
Shredjim
Enlisted Member
2
Rep
31
Posts

Drives: 2014 x28 X1
Join Date: May 2014
Location: Portland, OR

iTrader: (0)

My X1 came with the 17" wheels with Goodyear RF tires which I thought were a bit harsh. So - I. recently got 18" 322 style wheels and put Michelin PS A/S 3 tires on it in 245/45/18 size. They look fine and don't rub, but I am thinking they might be a bit too big. One negative is my gas mileage went down by 3 to 4 mpg
Appreciate 0
      08-24-2014, 02:27 AM   #16
0w40X1
Lieutenant
34
Rep
485
Posts

Drives: 2014 BMW X1 s28i M Sport
Join Date: Sep 2013
Location: West Texas

iTrader: (0)

Quote:
Originally Posted by Shredjim View Post
My X1 came with the 17" wheels with Goodyear RF tires which I thought were a bit harsh. So - I. recently got 18" 322 style wheels and put Michelin PS A/S 3 tires on it in 245/45/18 size. They look fine and don't rub, but I am thinking they might be a bit too big. One negative is my gas mileage went down by 3 to 4 mpg
Your odometer will read about 3% less or about 1 mpg if you haven't adjusted.

I change wheel sizes to smaller diameter like 26inch to 25 inch all the time to get more power, but you being bigger means more wheel weight.

I adjust miles driven with a scanguage and ignore the cars speedo which is already wrong.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:39 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST