Rubbing with 265/75/16

Lifted trucks are NOT supposed to be running stock numbers.

Shop sucks - they should of known that if they gave you stock specs.

0 toe
0 camber
2.8-3.0 caster

is the tits

 

always ran my lifted vehicles to recommended specs and never had a problem. And I have had 5 other trucks aligned the same way and never any rubbing issues or tire wear issues. Shop does excellent work. My SVT Cobra was aligned by them perfectly as well as my Tacoma. I believe its the current backspacing in combination with these specific tires.

 

Recommended specs are for stock height vehicles.
The geometry of the truck changes when you lift it thus stock specs should not be used.

Lifted recommended specs are:
0 toe
0 camber
2.4 - 3.0 caster


If you do not believe me search around in here or stop by the mid travel BS thread and pose the question to them http://www.tacomaworld.com/forum/suspension/200644-mid-travel-bs-thread.html#post4431849

I have been over this exact topic many many many times.

Or feel free to stop by the NJ BS thread and ask those guys....http://www.tacomaworld.com/forum/north-east/41121-nj-tacos.html#post689038

Best explanation regarding the change in geometry and caster I could find http://www.toyotanation.com/forum/61-2nd-generation-2005/315834-ucas-alignments.html#post2930800

 

What are the stock specs? Aren't they within the range above as well?

 

I'm sure you already know all of this KPT. 0 toe and camber are within stock specs. But the caster upper limit is around 2.5 IIRC.

The only reason you use caster so high when you have 0 toe and camber is because you need SOME kind of stability. 0 toe and camber will have a tendnecy to walk around on the highway, but caster angle of almost 3 will help keep the tires tracking straight and true.

Honestly, I don't understand why stock specs can't be used... I haven't had anyone give me a good explanation. Not that they're wrong, but I havent seen an explanation. My truck is aligned to stock specs with no issues (yet), not that i expect any.

 

I suppose it could be because, like XXXX said, the geometry is different. You set the toe/camber adjustments to '0' on the cams. But due to the geometry, the tire is not actually at 0 toe/camber, it's at something like 0.05 toe and 0.5 camber, which is at (approx) optimum specs. Just a theory?

 

I had 265/70/17 Yokohama's on stock sport rims with no rubbing with no lift kit. Installed 2.5" lift, still no rubbing (obviously). Installed 265/75/16 Duratrac's on wheels with 4" bs - lots of rubbing and had to cut quite a bit of plastic to prevent it. Caster is a 3.0.

 

No clue. I never had my truck aligned when it was stock. Never had the need because I wasn't beating it. If I am remembering correctly stock caster is around 1.5.

Most lifted guys ahve larger tires and need additional caster to clear them.

Out of the few guys I know running 35's they would prefer a caster of 4.0 and above.

Nope. Alignment is done from the wheels while the truck is sitting static. What you set it to during the alignment is what it is. Is does not change.


I first found out the specs from David Tarrantino in the NJ thread. He manages an alignment & general maintenance shop and does Mjp2's truck along with just about every member who is lifted in NJ, NY, and PA who's within driving distance. When I first lifted my truck with SAW2.0's in the front he set me to 2.9 - 3.0 I believe. On my last alignment I asked to lower the caster to 2.5-2.7 to see how it drives. Well it drives like poop offroad at speed and it rubs on big hits so next time I get one Ill be going back to 3.0.

 

Straight from my alignment sheet. Stock ranges are:

Camber: -0.3 to +1.2
Caster: +1.3 to +2.8
Toe: -0.04 to +0.07

So you could get good 'lifted' alignment that is still within factory spec. (0 toe/camber and 2.5 or more Caster)

 

ive got 265 /70/16 on my 2011 tacoma sport trd prerunner with 3 inch lift silent armer tires revtek lift going to 285 70 16 nitto with helo rims soon no rubbing at all