Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Garage > Wheels & Tires

Notices

offset and backspacing bugging me.

Reply
 
* Tire Finding Tools Thread Tools Search this Thread
Old 06-03-2010, 08:26 PM   #1
alexlies [OP] alexlies is offline
Senior Member
alexlies is on a distinguished road
 
alexlies's Avatar
Name: Alex
Joined: May 2010, #36488
Location: Battleground
Gender: Male
Posts: 170
alexlies's Tacoma Gallery
offset and backspacing bugging me.

ok im havin a hard time understandin what i need. so heres what im getting im getting a 15x8 rim with 33.12.50 tire on my 2002 tacoma what backspacing do i need to make this work with ease. would the 15x8 be a little narrow? for the 12.50? maybe `15X10?
  Reply With Quote
Old 06-04-2010, 04:27 AM   #2
Dirty Trucker
TacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shedTacoSupreem is one of the sharper tools in the shed
 
TacoSupreem's Avatar
Name: Hayden
Joined: Dec 2009, #27935
Location: Kentucky
Gender: Male
Posts: 2,411
TacoSupreem's Tacoma Gallery
Check with the tire manufacturer to see what the recomended rim width is for the tire your wanting. As far as backspace I believe 4-4.5" should work but I'm not certain?
  Reply With Quote
Old 06-04-2010, 10:16 PM   #3
Master Jedi Member I am...
chad68 is a splendid one to beholdchad68 is a splendid one to beholdchad68 is a splendid one to beholdchad68 is a splendid one to beholdchad68 is a splendid one to beholdchad68 is a splendid one to beholdchad68 is a splendid one to behold
 
chad68's Avatar
Name: Chad
Joined: Oct 2007, #3263
Location: In a (Toyota) van down by the river! Sonoma Cownty
Age: 45
Gender: Dude
Posts: 1,083
chad68's Tacoma Gallery
An 8" rim is not the "ideal" size for a 12.5 tire and some manufactures won't recommend that size tire on a 8" wheel, to the point it won't be listed on their sizing spec charts. Some manufactures do say you can run a 12.5 on an 8" wheel, so it's borderline to say the least. If anything else you won't have a nice flat contact patch with a wide tire on a narrow rim and the center of the tires will wear down faster than the edge, unless maybe you run really low PSI, which will wear everything down fast.

I would use a 9" wide wheel for a 12.5 wide tire. You could also use a 10" wheel but a 9" would be more ideal.

As far as backspacing I don't know since I have a gen2. With a 9" wide wheel and a 12.5x33 tire, I would guess that a 4.5" BS should work, at least on a gen2.

On a gen 2 if i was to try to stuff a 12.5 on my 16x8" 4.0" BS wheels, I supposdley have the right backspacing to do so, since the sidewall would buldge out more than if it were on a 9" wheel.

Yer probablly more confused than before? LOL
  Reply With Quote
Old 06-13-2010, 09:53 AM   #4
alexlies [OP] alexlies is offline
Senior Member
alexlies is on a distinguished road
 
alexlies's Avatar
Name: Alex
Joined: May 2010, #36488
Location: Battleground
Gender: Male
Posts: 170
alexlies's Tacoma Gallery
no i get it thanks for your help i think im gonna go with a 17x8 with 285/70
4.5 backspace
  Reply With Quote
Old 06-13-2010, 10:10 AM   #5
LT Chase Truck
mikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shedmikesdoublecab is one of the sharper tools in the shed
 
mikesdoublecab's Avatar
Name: Mohawk Mike
Joined: Jun 2008, #7334
Location: Glendale, CA
Age: 44
Gender: Male
Posts: 5,959
mikesdoublecab's Tacoma Gallery
Alex, 4.5" backspace may have clearance issues on a first gen, especially if you ever air down to offroad...

your stock backspace is 4.5" and throwing on a 285, the sidewall of tire may rub up against the stock upper control arm, and may rub on the frame at full turn...

when turning into a driveway, you may also hear the tread rub up on the pinch weld...

if upsizing your wheel and tire, i would consider going into a 4" or 4.25" backspace...
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with offset and backspacing Sanders17 Wheels & Tires 11 08-22-2011 04:34 PM
Offset and backspacing??? VTaco08 Wheels & Tires 1 11-06-2010 04:52 AM
offset and backspacing mattoneal33 2nd Gen. Tacomas 1 09-03-2010 10:29 AM
Backspacing, Offset? SCFirefighter Wheels & Tires 12 07-28-2010 08:45 AM
Offset / Backspacing boshak 1st Gen. Tacomas 1 07-16-2010 10:23 AM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.