33's (285/70/17) on stock 17" rims
02-04-2015, 01:43 AM
#1
'08f150stx
Thread Starter
33's (285/70/17) on stock 17" rims
Hi
Tire fitment is a topic beat to death. I read the tire fitment guide and wonder if there are any Unleveled and 2" level. (Picture?) Rubbing with Unleveled and stock 17" rims (4x4)? Tire dealer wants to sell me stock size only. Help!
Before I add posi for traction I want to see how much good at tires do for traction. Open diff sucks, so do factory type tires.
Tire fitment is a topic beat to death. I read the tire fitment guide and wonder if there are any Unleveled and 2" level. (Picture?) Rubbing with Unleveled and stock 17" rims (4x4)? Tire dealer wants to sell me stock size only. Help!
Before I add posi for traction I want to see how much good at tires do for traction. Open diff sucks, so do factory type tires.
Last edited by '08f150stx; 02-04-2015 at 01:47 AM.
02-04-2015, 09:32 AM
#3
My 2006 FX4 SCAB with Helo 878 rims with a -11 offset, they have fierce attitude 285/70/17's on them. I have a 2.5" HBS front leveling kit and had a slit rubbing in reverse. Not sure if you would have rubbing or not with the stock rims since the offset is different. I would just go with a level. They're pretty inexpensive and it always gives you the option of running 35's later on...
02-04-2015, 09:40 AM
#4
Correct me if i'm wrong...but if you were going to mess with your rear diff. I would suggest LSD? Posi, being both rear wheels spin together (no power transfer between rear wheels) would cause tailspins in slippery conditions...probably not good for a vehicle that is already light in the rear anyways... just MHO.
02-04-2015, 10:30 AM
#5
Senior Member
285/70/17's WILL fit on a stock, unleveled F150 4x4 without rubbing (on stock rims). I had Firestone Destinations on my 2008 supercab. They looked great, and never rubbed on anything, forward, reverse, turning, turning while backing up, nothing!
Last edited by driver444; 02-04-2015 at 10:46 AM.
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'08f150stx (02-04-2015)
02-04-2015, 10:38 AM
#6
Senior Member
Correct me if i'm wrong...but if you were going to mess with your rear diff. I would suggest LSD? Posi, being both rear wheels spin together (no power transfer between rear wheels) would cause tailspins in slippery conditions...probably not good for a vehicle that is already light in the rear anyways... just MHO.
actually, Posi, and limited slip are basically the same thing. just that different manufacturers have different names for it. Posi (positraction) is still a clutched or cone clutch style type of limited slip, as is Ford's trac-loc, or Chrysler's anti-spin, or whatever they call it.
both allow for differentiation when turning, and transfer only a limited amount of torque to the wheel with traction, (limited by the clutches, and the separating force of the spider and side gears that load those clutches), but yes, in both types, the majority of the time, it will "try" to send equal power to both wheels, and they do fishtail more in snow or slippery conditions.
I always say that these differentials are better than nothing, but not by much!
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02-04-2015, 01:31 PM
#8
'08f150stx
Thread Starter
Correct me if i'm wrong...but if you were going to mess with your rear diff. I would suggest LSD? Posi, being both rear wheels spin together (no power transfer between rear wheels) would cause tailspins in slippery conditions...probably not good for a vehicle that is already light in the rear anyways... just MHO.
02-04-2015, 01:33 PM
#9
'08f150stx
Thread Starter
8.8 open rear end on mine. diffsonly.com has lsd's for 8.8, Auburn gear or Detroit True Track?
Last edited by '08f150stx; 02-04-2015 at 01:44 PM.
