So I been researching around and from what i been reading there is no alignment that can be done for the rear. Buuut... On my 91 4runner 3.0 I can notice that my driver side rear has a negative camber.. And my rear passenger side looks pretty straight up and down. Any ideas why?

Thanks

 

Check your rear bearings

 

Most shops give free alignment checks. Much more accurate than eyeing it. I agree with checking for play in the bearing. You hit anything? The only adjustment you can make is for the thrust angle. So either your eyes are off, or something is broke.

 

X2 ^^ it can be checked but no way to adjust it. Something's got to be bent, really wore out, etc.

 

Havent really hit anything to think it could have been bent. How can I check the bearing? Do I just jack up that side and see if there's play in the wheel?

For sure I need an alignment but I am worried I am get an alignment and still wear my back tire.

 

^^yes. If the bearing is bad enough to make the tire tilted you should have a very bad vibration and oil leaking. Are you parked on a level surface? Equal tire pressure?

 

Actually, checking camber is so easy there's no reason not to do it. Get a $7 24" level from Home Depot http://www.homedepot.com/p/Stanley-2...-468/202317053. Use it to find a level parking spot. Use rubber bands to attach a pair of drywall screws point out to the side of the level, as far apart is the edges of the wheel rim. Hold the points against the rim with the level vertical. Is it plumb? It should be.

On front tires, you often want a little camber, so you just tip the level until it's plumb, and estimate the distance from the tip of the screw to the rim. Use the formula to compute the angle in radians. (1/16" over 12" is 0.25°; you can measure with great precision)