Tirerack
Use the following links to go directly to useful tirerack winter items: Tirerack Winter Tires. Gary's Winter Tire FAQ.
Using the links directly supports E90Post with tirerack sales commision!

  E90Post
 


TireRack

   PLEASE HELP SUPPORT E90POST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > paging Gary @ Tire Rack



Wheels and Tires forum Sponsored by The Tire Rack
Please help to directly support e90post by doing your tirerack shopping from the above link. For every sale made through the link, e90post gets sponsor support to keep the site alive. Disclaimer

Wheel offset calculator courtesy of BimmerPost.com. You may use this calculator to calculate what tire sizes you might need if you upgrade your tires, or what wheel sizes/offsets are compatible with your car.
    Current Wheel Width  inches             Current Wheel Offset  mm.
         New Wheel Width  inches                  New Wheel Offset  mm.
 
TIRE WIDTH
/
ASPECT RATIO
- WHEEL DIAMETER
ORIGINAL TIRES
/
NEW TIRES
/
Based on your stock wheel setup, your new wheel will have:
Original Tires Diameter (in.)
      New Tires Diameter (in.)
  Difference in diameter (in.)
           Percent Difference %
                     
Speedo @60mph will read: mph
Collapse/Expand the BimmerPost Wheel and Tire calculator
Reply
 
Thread Tools Search this Thread
      07-10-2012, 12:34 PM   #1
motuman
Private
 
Drives: 4 bimmers
Join Date: Mar 2012
Location: Cali

Posts: 92
iTrader: (0)

paging Gary @ Tire Rack

reopening an older thread - http://www.e90post.com/forums/showthread.php?t=235267

Quote:
Originally Posted by Gary@TireRack
This last statement is especially important and often overlooked.

Low torque, lightweight cars driven in autocrossing or race vehicles will get the most benefit. I've driven a large variety of wheel/tire setups on our E46, E90 and E92 test cars and found very little difference from 10lbs of unsprung weight.


Do you mean 10lbs per wheel?
Or 10 pounds total for 4 wheels and tires?
motuman is offline   United_States
0
Reply With Quote
      07-11-2012, 07:37 AM   #2
Gary@TireRack
Moderator
 
Gary@TireRack's Avatar
 
Drives: Formerly 1995 M3
Join Date: Oct 2006
Location: South Bend, IN, Tire Rack HQ

Posts: 4,421
iTrader: (2)

Per wheel, believe it or not.
__________________
Gary
Tire and Wheel Forum Moderator. Tire Rack Sales Rep
Gary@Tirerack.com
http://www.tirerack.com/a.jsp?a=AH8&url=index.jsp

Please refer to 'Gary' as your previous contact when you order online.
Gary@TireRack is offline   United_States
0
Reply With Quote
      07-11-2012, 02:18 PM   #3
motuman
Private
 
Drives: 4 bimmers
Join Date: Mar 2012
Location: Cali

Posts: 92
iTrader: (0)

Quote:
Originally Posted by Gary@TireRack View Post
Per wheel, believe it or not.
Wow, that is surprising.

In a way I might expect that on the newest BMW's.

Car & Driver mentioned in the test of the new F30 (I think) that BMW was finally starting to figure out how to deal with stiff and heavy runflats (suspension wise).

But in the older cards like e46, I would expect some difference in 10 pounds of unsprung weight. Especially over washboard and broken surfaces.....that's a lot less mass for the suspension to have to control.

Thanks.
motuman is offline   United_States
0
Reply With Quote
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 07:48 AM.




e90post
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