You make some really good points...especially about the tendency to scrub the outside of tire in downward travel. The roads in my area suck, and use the suspension all the time.im by no means an expert but when i went to those specs, (socal's), the tires were still feathering, now im set to .1 neg camber and the feathering has improved and the back of the tread is no longer wearing off before the front.
And i do have new uca to compensate for the spacer lift i have. I was told when going over bumps, the way the suspension moves, it scrubs tires as they articulate downwards and goes into a more positive camber situation.
I'm not sure if thats true but it makes sense to me, and the fact that when you are turning the tires 'camber over' as well wearing the outside first, hence slightly more neg camber and regular tire rotations should help this.
We shoild really ask socal the alignment guy about this tho, i think hes the pro
My factory tires are not as bad as yours, but these are on the back and will remain there until I purchase new tires. 32k miles on these.The tire bouncing on the road is what causes only the outside edge to wear prematurely?
My truck tracks perfectly. All my suspension components are tight and leak-free.
No wobble, no bounce, no vibration.
I have the exact same outer edge wear on my fronts. You can look at my truck and visibly see the positive camber with your naked eye. My Toyota shop said my alignment was within spec. Fair enough. But, the degree of positive camber that is within spec and acceptable, will cause excessive outer edge wear, even with a perfectly functioning suspension.
Since I know I'm replacing tires soon, I purposely didn't rotate last time, just so the wear on the fronts would be pronounced. In the event that I took my truck back to the Toyota shop and asked them to adjust the camber (they're actually a good shop) and they told me it was "fine", I could show them what "within spec" did to $800 worth of tires in just 20k mi. Even with rotations at 5 and 10k.
If I ask and they say they won't adjust it to zero for me, even if I pay, I'll ask the tire place to do it when I get new tires.
The tires only havery abot 3 or 4 thousand miles on them. I just rotated them today.
I had toyota check and they stated the alignment was not needed, it was good.
The truck has about 69,000 miles. I got it with about 64,000 6 months ago
I am also running recommended tire pressure.
Because your camber is probably within spec. My camber is also considered to be within spec. And you saw what my tires look like.He also said my alignment was good, so if everything is good then why the odd tire wear?
My factory tires are not as bad as yours, but these are on the back and will remain there until I purchase new tires. 32k miles on these.
I ran factory specs on tire pressure for the first 20k. Since then I have 35 psi rear and 36-38 psi in the fronts.
That is damn close to what mine were doing as well, and on my stock rugged trails it wasnt as noticable as they are more of a 'round' tire anyways, but when i bought nice, new, deep tread, flat topped tires the wear was instantly noticable and i had to correct it, hence the new uca's, but i do have a level on it so that was the issue imo.This is Not my tire but is a better pic for an idea of what's going on. It shows better.
(I have an ok lead on some new struts that are new take offs. They are still expensive but on the fence now weather to buy them.)