BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Wheels + Tires Sponsored by The Tire Rack
  TireRack

KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK!
Post Reply
 
Thread Tools Search this Thread
      12-02-2008, 09:18 PM   #1
MrHarris
yodog
 
MrHarris's Avatar
 
Drives: '86 Corolla
Join Date: Jun 2007
Location: Diamond Bar, Ca

Posts: 5,027
iTrader: (5)

Garage List
2009 BMW  [5.00]
Send a message via AIM to MrHarris
Tire size?

I'm getting aftermarket rims, 19x9 and 19x10. I want 255's up front and 275's in the rear. What size tires would I get to keep the factory speedo/look?
__________________

2009 E92 M3 | Alpine White | Black Extended | Advan RS | Turner Test Pipes | Dinan Axle-Back | OETuning | Eibach Springs | UUC SSK | VRS Front Lip | VRS Type I Diffuser | Matte Black | RPi Scoops | MS Filter | Yokohama AD08 | F1 Pinnacle
Special Thanks: Gintani | OETuning | eAs
MrHarris is offline   United_States
0
Reply With Quote
      12-02-2008, 10:09 PM   #2
GregW / Oregon
Commander-In-Chief
 
Drives: 2008 M3 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

Posts: 6,781
iTrader: (1)

Garage List
Alternate tire sizes

Quote:
Originally Posted by MrHarris View Post
I'm getting aftermarket rims, 19x9 and 19x10. I want 255's up front and 275's in the rear. What size tires would I get to keep the factory speedo/look?
Revolutions per mile (which is a more precise indication of overall diameter) is the easist data to look at (following is for PS2s). Stock 245/35s & 265/35s are 807 & 790 revs/mile, respectively. 255/35s for the front are in the ballpark at 799. For the rear, 275/35s are at 783 revs/mile. Both of those are only 1% larger than stock, so should be fine. They should actually make the speedometer more accurate, as it's a little optimistic.

You could also go 265/30 F (822) and 285/30 rear (799) with the right offsets, though these are slightly smaller OD. Check with your wheel manufacturer for another opinion.
__________________

Greg Lake Oswego, Oregon, USA
2008 M3 Coupe - Alpine/Fox Red/Carbon
2015 M4 pre-ordered 4/13
GregW / Oregon is offline   United_States
0
Reply With Quote
      12-03-2008, 02:01 AM   #3
MrHarris
yodog
 
MrHarris's Avatar
 
Drives: '86 Corolla
Join Date: Jun 2007
Location: Diamond Bar, Ca

Posts: 5,027
iTrader: (5)

Garage List
2009 BMW  [5.00]
Send a message via AIM to MrHarris
I thought I needed 255/35 and 275/30?
__________________

2009 E92 M3 | Alpine White | Black Extended | Advan RS | Turner Test Pipes | Dinan Axle-Back | OETuning | Eibach Springs | UUC SSK | VRS Front Lip | VRS Type I Diffuser | Matte Black | RPi Scoops | MS Filter | Yokohama AD08 | F1 Pinnacle
Special Thanks: Gintani | OETuning | eAs
MrHarris is offline   United_States
0
Reply With Quote
      12-03-2008, 08:00 AM   #4
kmarei
Major General
 
kmarei's Avatar
 
Drives: 1988 E30 M3 Evo II
Join Date: Jul 2008
Location: Reston, VA

Posts: 6,453
iTrader: (32)

Garage List
go here and plug in the numbers
http://www.e90post.com/forums/forumdisplay.php?f=12
the front OEM wheels are 8.5" width and an offset of 29
rear are 9.5" offset 23
kmarei is offline   Egypt
0
Reply With Quote
      12-03-2008, 09:28 AM   #5
GregW / Oregon
Commander-In-Chief
 
Drives: 2008 M3 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

Posts: 6,781
iTrader: (1)

Garage List
Quote:
Originally Posted by MrHarris View Post
I thought I needed 255/35 and 275/30?
275/30s are 3% smaller than the stock rears, vs. 1% larger for the 35s. By smaller, I mean circumference, not diameter, which is the important factor. You decide.
__________________

Greg Lake Oswego, Oregon, USA
2008 M3 Coupe - Alpine/Fox Red/Carbon
2015 M4 pre-ordered 4/13

Last edited by GregW / Oregon; 12-04-2008 at 11:11 PM.
GregW / Oregon is offline   United_States
0
Reply With Quote
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
Forum Jump


All times are GMT -5. The time now is 07:26 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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