Tires and Wheels What skins are you rollin' around on? Discuss wrapping your rims in here.
Sponsored by:
Sponsored by:

Tire widths and 4x4

  #1  
Old 12-18-2013, 06:04 AM
Badco's Avatar
Starting Member
Thread Starter
Join Date: Oct 2012
Location: Elmwood, OH
Posts: 225
Badco is on a distinguished road
Default Tire widths and 4x4

Now, I know you aren't supposed to mix different tire diameters if you plan on using the 4x4, 15/6 etc. But what about the width? Say I had p235 in back and p205 in front. Is this still a concern and why? In theory, shouldn't the rotating mass still be the same all around even if the front is slightly thinner?
Thanks
 
  #2  
Old 12-18-2013, 04:11 PM
El_Beautor's Avatar
BF Veteran
Join Date: Jan 2008
Location: Leduc, Alberta
Posts: 2,146
El_Beautor will become famous soon enoughEl_Beautor will become famous soon enough
Default

If your measured tire height is exactly the same then you probably would be fine, however I wouldn't risk it myself. It's not the width or rotating mass that causes problems. It's the fact that in 4wd the front and rear differentials are locked together. If the tire height between the front and rear are different it causes binding and heat in the transfer case, and could cause catastrophic failure.

I have a friend who's NP236 transfer case started a fire after he replaced only 2 tires that were a different size from the originals because he blew 2 while on a road trip. I don't remember the difference in tire sizes, but the tire shop assured him that they were the same height and would cause no problems. 100 miles or so into his road trip he noticed smoke coming from under his truck. Ended up having to be towed and had to replace the transfer case. He was using the auto-trac function, not 4-Hi, but the different tire height still caused the transfer case to fail.
 
  #3  
Old 12-18-2013, 05:37 PM
Badco's Avatar
Starting Member
Thread Starter
Join Date: Oct 2012
Location: Elmwood, OH
Posts: 225
Badco is on a distinguished road
Default

I see... 2wd should be fine though right? Provided the transfer case is 100% completely unlocked from the front diff?

Shame, I just now realized the tires on the camaro rims Im getting are 205/65s. Any idea what 3 half decent Firestones should go for
 
  #4  
Old 12-19-2013, 11:00 AM
El_Beautor's Avatar
BF Veteran
Join Date: Jan 2008
Location: Leduc, Alberta
Posts: 2,146
El_Beautor will become famous soon enoughEl_Beautor will become famous soon enough
Default

If you're in 2wd and never use 4x4 or autotrac then you should be fine. If you're going to do that on a 4x4 truck I'd suggest you pull the 4x4 fuse just to make sure you can't accidentally engage it.
 
  #5  
Old 12-19-2013, 12:21 PM
Diaita's Avatar
Super Member
Join Date: Dec 2011
Location: Port Alberni, BC
Posts: 1,438
Diaita will become famous soon enough
Default

As long as your diameter is the same, there will be no issues. The width and profile of the tires won't make a difference.
 
  #6  
Old 12-19-2013, 01:29 PM
LeWhite's Avatar
Senior Member
Join Date: Nov 2012
Location: under Los Angeles
Posts: 836
LeWhite will become famous soon enough
Default

Understand the tire spec. The hight spec is a PERCENTAGE of width.
 
  #7  
Old 12-19-2013, 03:01 PM
Diaita's Avatar
Super Member
Join Date: Dec 2011
Location: Port Alberni, BC
Posts: 1,438
Diaita will become famous soon enough
Default

Originally Posted by LeWhite View Post
Understand the tire spec. The hight spec is a PERCENTAGE of width.
Exactly. So you could have a 235/70R15 on the front, and a 345/30R20 in the rear if you wanted to, with no issue.
 
  #8  
Old 12-19-2013, 10:23 PM
Badco's Avatar
Starting Member
Thread Starter
Join Date: Oct 2012
Location: Elmwood, OH
Posts: 225
Badco is on a distinguished road
Default

That's why I asked what 3 half decent firestones might go for. For some reason I remembered the middle digit being the mileage them being good for, not the percent of width. Derp. The tires on the Camaro rims would be 133.25mm and mine would be 176.25mm

My transfer case would not approve. I'd take and put the tires I have on the Camaro rims but my right rear is worn funny to the outside. Not sure if this is a bad suspension part or because the last owner put on a mismatched tread.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Sam's rustyY2K
Steering, Suspension & Drivetrain
1
06-28-2011 04:33 AM
PostRelease
1st Gen S-series (1983-1994) Tech
0
10-08-2010 03:01 PM
PostRelease
2nd Gen S-series (1995-2005) Tech
0
10-08-2010 03:01 PM
butters
General Chat
3
05-15-2009 08:06 PM
Blazertrish66
Steering, Suspension & Drivetrain
6
04-29-2008 07:54 PM


Thread Tools
Search this Thread
Quick Reply: Tire widths and 4x4


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.