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 > How To Calculate Tire Tread Percentage?



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

Reply
 
Thread Tools Search this Thread
      11-29-2008, 09:03 PM   #1
GAM3OVR85
Major General
GAM3OVR85's Avatar
Kuwait
97
Rep
8,059
Posts

Drives: E92 M3
Join Date: Aug 2007
Location: Montreal, QC

iTrader: (18)

Garage List
How To Calculate Tire Tread Percentage?

Does anybody know how?

I have the tire tread depth gauge but how can i get the percentage of the tread 6/32?


Thank you in advance
__________________
08 E92 M3/Melbourne Red/6MT/Exec Pack/MDrive/EDC/PDC/19" 220M
Mods: VRS Front Lip, HID Angels, KW V3, Stoptech BBK, SS lines, 18" TE37SL, Bastuck Exhaust, MS Air Filter, OEM Aluminum Padels, LED Interior Light
07 E92 328i/Jet Black/Cream Beige Leather/Premium/Step/Heated Seats...check garage!
Appreciate 0
      11-29-2008, 10:01 PM   #2
Orient330iNYC
Major
15
Rep
1,341
Posts

Drives: 2013 335i M Sport
Join Date: Apr 2007
Location: Wall St

iTrader: (2)

Quote:
Originally Posted by MTL Bimmer View Post
Does anybody know how?

I have the tire tread depth gauge but how can i get the percentage of the tread 6/32?


Thank you in advance
you need to check what depth the tires came with new. its listed on tire rack under specs. its usually around 10/32nds or 11/32nds
__________________
Past: 2001 Orientblue E46 330i
Past: 2004 S60R 6MT
Past: 2007 E90 335i 6MT
Past: 2010 335xi ZMP, BMW Performance Kit, BMW Performance Exhaust
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Appreciate 0
      11-29-2008, 10:03 PM   #3
clickclickboom
Private First Class
3
Rep
104
Posts

Drives: Por she
Join Date: Oct 2008
Location: Over here

iTrader: (0)

Look up what the tire's tread depth was new and divide. If it was 11/32 and now is 6/32 then 55% of the tread is remaining. Minimum tread wear is 2/32. That would mean 44% of the usable tire is remaining.
Appreciate 0
      11-30-2008, 08:23 PM   #4
GAM3OVR85
Major General
GAM3OVR85's Avatar
Kuwait
97
Rep
8,059
Posts

Drives: E92 M3
Join Date: Aug 2007
Location: Montreal, QC

iTrader: (18)

Garage List
Thanks guys

clickclickboom, how did u do the calculation?

Thanks
__________________
08 E92 M3/Melbourne Red/6MT/Exec Pack/MDrive/EDC/PDC/19" 220M
Mods: VRS Front Lip, HID Angels, KW V3, Stoptech BBK, SS lines, 18" TE37SL, Bastuck Exhaust, MS Air Filter, OEM Aluminum Padels, LED Interior Light
07 E92 328i/Jet Black/Cream Beige Leather/Premium/Step/Heated Seats...check garage!
Appreciate 0
      11-30-2008, 09:23 PM   #5
Orient330iNYC
Major
15
Rep
1,341
Posts

Drives: 2013 335i M Sport
Join Date: Apr 2007
Location: Wall St

iTrader: (2)

Quote:
Originally Posted by MTL Bimmer View Post
Thanks guys

clickclickboom, how did u do the calculation?

Thanks
lets say your tire has an original tread depth of 10/32nds, your tire measures 8/32nds. min tread depth is 2/32nds.


subtract the min tread depth from the current tread depth. 6/32nds

you can ignore the 32nds since they're all the same unit

6/10= 60% useable tread life.

however, if you're expressing it in terms of % tread (not tread life) left, just divide current tread depth by original tread depth 8/10=80% tread left.

most used tire sales i've seen speak of the tread left, not useable tread life.

the new tire tread depth includes the 2/32nd min tread depth. a new 10/32nd tire really only has 8/32nds of useable tread depth.
__________________
Past: 2001 Orientblue E46 330i
Past: 2004 S60R 6MT
Past: 2007 E90 335i 6MT
Past: 2010 335xi ZMP, BMW Performance Kit, BMW Performance Exhaust
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Appreciate 0
      11-30-2008, 09:42 PM   #6
GAM3OVR85
Major General
GAM3OVR85's Avatar
Kuwait
97
Rep
8,059
Posts

Drives: E92 M3
Join Date: Aug 2007
Location: Montreal, QC

iTrader: (18)

Garage List
Quote:
Originally Posted by Orient330iNYC View Post
lets say your tire has an original tread depth of 10/32nds, your tire measures 8/32nds. min tread depth is 2/32nds.


subtract the min tread depth from the current tread depth. 6/32nds

you can ignore the 32nds since they're all the same unit

6/10= 60% useable tread life.

however, if you're expressing it in terms of % tread (not tread life) left, just divide current tread depth by original tread depth 8/10=80% tread left.

most used tire sales i've seen speak of the tread left, not useable tread life.

the new tire tread depth includes the 2/32nd min tread depth. a new 10/32nd tire really only has 8/32nds of useable tread depth.
Thanks man .....i wanna sell my tires and want to know how much % left so i can't tell the guy, i don't want to say there is 60% left and it actually has 50% of usable treads....you know what i mean .

Ok so, the new tire is 10/32nds (checked on tirerack) MINUS 2/32nds = 8/32nds there is 6/32nds left.
10/32nds MINUS 6/32nd = 4/32nds, then 4/32nds DIVIDED BY 8/32nds = 50% left no?
__________________
08 E92 M3/Melbourne Red/6MT/Exec Pack/MDrive/EDC/PDC/19" 220M
Mods: VRS Front Lip, HID Angels, KW V3, Stoptech BBK, SS lines, 18" TE37SL, Bastuck Exhaust, MS Air Filter, OEM Aluminum Padels, LED Interior Light
07 E92 328i/Jet Black/Cream Beige Leather/Premium/Step/Heated Seats...check garage!
Appreciate 0
      11-30-2008, 10:25 PM   #7
Orient330iNYC
Major
15
Rep
1,341
Posts

Drives: 2013 335i M Sport
Join Date: Apr 2007
Location: Wall St

iTrader: (2)

Quote:
Originally Posted by MTL Bimmer View Post
Thanks man .....i wanna sell my tires and want to know how much % left so i can't tell the guy, i don't want to say there is 60% left and it actually has 50% of usable treads....you know what i mean .

Ok so, the new tire is 10/32nds (checked on tirerack) MINUS 2/32nds = 8/32nds there is 6/32nds left.
10/32nds MINUS 6/32nd = 4/32nds, then 4/32nds DIVIDED BY 8/32nds = 50% left no?
make it easy, tell them the new tread depth and the current tread depth.
let them do the math and come to the conclusions
__________________
Past: 2001 Orientblue E46 330i
Past: 2004 S60R 6MT
Past: 2007 E90 335i 6MT
Past: 2010 335xi ZMP, BMW Performance Kit, BMW Performance Exhaust
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Appreciate 0
      12-01-2008, 01:55 PM   #8
GAM3OVR85
Major General
GAM3OVR85's Avatar
Kuwait
97
Rep
8,059
Posts

Drives: E92 M3
Join Date: Aug 2007
Location: Montreal, QC

iTrader: (18)

Garage List
Quote:
Originally Posted by Orient330iNYC View Post
make it easy, tell them the new tread depth and the current tread depth.
let them do the math and come to the conclusions
Excellent idea

but it's also good to know hehe


Thanks guys
__________________
08 E92 M3/Melbourne Red/6MT/Exec Pack/MDrive/EDC/PDC/19" 220M
Mods: VRS Front Lip, HID Angels, KW V3, Stoptech BBK, SS lines, 18" TE37SL, Bastuck Exhaust, MS Air Filter, OEM Aluminum Padels, LED Interior Light
07 E92 328i/Jet Black/Cream Beige Leather/Premium/Step/Heated Seats...check garage!
Appreciate 0
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 -4. The time now is 09:22 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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