Tire wear diagnosis

[Eyelise]

OEM PSSs inside shoulder worn to belts. The wear is unusual even for 13k miles. It involves the front much more than the rear but definitely both. I have Eibach sway bars and Verus camber plates up front. I’m not sure on the exact camber and I did have a track alignment at a local shop. Could this be toe rather than camber? I have also been running slightly lower air pressures around 35. I am replacing the tires and having the alignment checked to see where I am. Just wondering what people thought.

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[Hasan]

Perhaps too much camber and toe out.

 

[Eyelise]

Perhaps too much camber and toe out.

Rear camber not adjustable. Why the rear wear

 

[garudathree]

rear camber adjustable

 

[ky.supra]

OEM PSSs inside shoulder worn to belts. The wear is unusual even for 13k miles. It involves the front much more than the rear but definitely both. I have Eibach sway bars and Verus camber plates up front. I’m not sure on the exact camber and I did have a track alignment at a local shop. Could this be toe rather than camber? I have also been running slightly lower air pressures around 35. I am replacing the tires and having the alignment checked to see where I am. Just wondering what people thought.

Could you show us your alignment sheet when you had it done at your local shop?

 

[razorlab]

100% toe wear.

Toe is adjustable front from factory.

Toe *and* camber is adjustable rear from factory.

 

[Eyelise]

Could you show us your alignment sheet when you had it done at your local shop?

They do a string alignment and didn't have a readout but will when I redo it. I am betting the Toe is too agressive.

100% toe wear.

Toe is adjustable front from factory.

Toe *and* camber is adjustable rear from factory.

TY Bryan I had that reversed. You know I thought it was toe as well. The wear appeared after the track alignment and seemed odd for camber. The car has felt perfectly normal daily driving and great manners on the track.

 

[ky.supra]

They do a string alignment and didn't have a readout but will when I redo it. I am betting the Toe is too agressive.

Gotcha, did you tell them what alignment specs you wanted at the time?

 

[Eyelise]

I want to avoid this kind of wear when put on my new dailies. I have a track set now and the wear looks fine after 8 sessions maybe 40 laps. Any thoughts what would be a good compromise? Obviously I'll dial back the Toe from the current settings. I'm inclined to leave the camber as it is.

 

[Eyelise]

Gotcha, did you tell them what alignment specs you wanted at the time?

I didn't but I will this time. I am having it done at the tire retailer where I ordered the new dailies so I'm a little concerned they will resist going out of spec. I don't care about tire warrantees but you know how these retail shops can be. We will see. I have a decent string set-up at home and can adjust if need be, not too concerned. Any thoughts on a decent target?

 

[Vertex]

I had not the complete opposite wear going on for the rear but the outside tread on the rear tire was at about 2/32 when I swapped tires the other week and the inside was still around 4-5/32 tread. Fronts still had a lot of meat so I saved all of them just in case. Will probably align it sometime this week.

Only have eibach front sway bar installed on mine and some spacers front and rear.

 

[ky.supra]

I didn't but I will this time. I am having it done at the tire retailer where I ordered the new dailies so I'm a little concerned they will resist going out of spec. I don't care about tire warrantees but you know how these retail shops can be. We will see. I have a decent string set-up at home and can adjust if need be, not too concerned. Any thoughts on a decent target?

Front Camber: -2.5 to -3.0 (you can go up to -3.5 if its a dedicated track car)
Toe: 0

Rear Camber: -2.0 to -2.4
.2 to .4 total rear toe in

 

[Eyelise]

Rear Camber: -2.0 to -2.4
.2 to .4 total rear toe in
[/QUOTE]

What is .2-.4 in MM?

OK founds some notes. Apparently got -3.1 camber up front zero toe. -2.0 camber rear sl toe in. This doesn't make sense with the wear in my mind. I'll be interested to see what the pre-alignment readout is.

 

[Eyelise]

What are the OEM toe specs?

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