my car just got an alignment in mid January and now the rear right tire is eating up on the outside toward the middle. I guess thats called "feathering" ? i know for sure its not suppose to do that after an alignment. After looking at the alignment specs it looks like the tech did the job right. But im no expert have a look n see
the car is lowered on tein s techs and have front n rear camber kits
front
camber left -0.7=========-1.1 right
toe left 0.05=========0.05 right


rear
camber left -1.7========-1.7 right
toe left 0.17========0.19 right


front factory specified range for left and right
camber -1.2 0.3
toe 0.00 0.08


rear factory specified range for left and right
camber -1.8 -0.08
toe 0.00 0.22

 

Ok if your rear tires (left or right) is eating up on the outside that means you have wayyy too much toe-in. Our rear tires with negative camber should wear more on the inside, but toe-in wears more on the outside, which is what you have.

Based on the post-alignment spec, even though your rear toes are in-spec, 0.17 and 0.19, it is still a significant amount of cross-toe, which is 0.36. I personally like the toes under 0.1 and 0.1. A little rear toe-in gives you more high-speed stability.

Since this is post-alignment i'm assuming your toe in is much worse before, which explain why your tires are wearing on the outside.

 

"Since this is post-alignment i'm assuming your toe in is much worse before, which explain why your tires are wearing on the outside."

yea it was worse before because of the install of the rear camber kit. i didn't install the toe bolt though....do you think that might be another problem? i herd that if your not lower than 1'' inch you don't have to install the toe bolt. and plus i didn't know where to install it. but anyway do you also think to much inflation of the tire to be another problem?
oh yea thanks for the reply

 

Heel toe feathering is what happens to human shoes when a person is pigeon toed..........the heel of the tire block is worn down more than the toe of the individual block................each block is an exact image of the previous block......usually on inside and outside

http://www.lasercannon.com/images/Z/...de/feather.jpg
http://www.lasercannon.com/Newz/feathering.htm

http://www.coe.uga.edu/hawc/feather.gif

 

I run -1.6 rear camber with 0.05 toe in on both sides with perfectly even wear across the tread. Definitely have them decrease your toe in. What rear camber kit do you have? If its the spc kit and they didn't elongate the toe bolts, that may be what is limiting your toe in values

 

When I had a 1" drop you had to get a camber kit, but then my toe is barely in spec because (the way our rear suspension is designed) decreasing camber increases the toe. Therefore I had to get toe-bolt also.

Have the guy try decreasing your toe-in even more, but there's a pretty good chance that your toe-bolts are maxed out. Toe-bolts installations are not fast because it requires drilling, so you are better off taking it to a shop.

As of where to install the toe-bolt, if you look underneath your car, you will see two eccentric washers on each side, one is connected to your rear camber arm - that's the camber bolt, the other is the toe bolt.

 

damn guess i do have to install that toe bolt...i saw a DIY from my350z...looks pretty easy....hopefully i don't mess up