|06-03-2010, 09:26 PM||#1|
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?
|06-04-2010, 05:27 AM||#2|
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?
|06-04-2010, 11:16 PM||#3|
Master Jedi Member I am...
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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
10 day waiting period??!!! Oh man But I'm pissed off NOW!!!
My other truck is a modded 2012 Yamaha R6
|06-13-2010, 11:10 AM||#5|
LT Chase Truck
01 Tacoma DoubleCab V6 Prerunner 2001 Double Cab Automatic V6
Engage Offroad custom LT kit with King coilovers and bypasses, Deaver J59 leaf packs with custom 8 inch shackles and Bilstein 7100 12" travel shocks, 16x8 Eagle Alloy 137s, 285-75-16 BFG KM2s, custom front bumper and skid, Procomp H911 foglights, custom rear bumper and spare tire carrier, bed bar, Engage Offroad custom chase light rack, Icom V8000 radio
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...
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