I noticed tonight that my tires have a type of cupping. It's not from inside to out or vice versa indicating bad camber or toe in/out.
If you look at a duratrac tire they have cuts for sipping. This is where my cupping is. The entire rotation it feels like steps. One side of the sipped line is raised and the other isn't.
I just rotated my tires after 12,000kms and it's seems like its on all four tires. I could see if it's only my rears ( previously fronts) but the fronts (previously rears) seem to have it also.
Any advice or opinions?

 

hmm. does it look like this? i know it a different tire but..

 

Whens the last time you had them aligned?

 

well tread block stepping like pictured and spoken about by the OP is a balancing issue

 

Yes, that's kinda what it looks like. They were aligned when I did the pre key back in April. I never had them rebalanced after a short distance when I got them mounted in may. I know some other members including Pedro had theirs rebalanced after 100 clicks.

 

i would have a place check your balance and alignment. I know at work we charge $15 for this

 

I am off tomorrow, maybe I'll head to where I got the tires since hwy should be covered. It's discount and I heard they have decent customer service.

 

If they are balanced and the truck is aligned properly and that you rotate consistently you should see if good year will warranty them as defective. I have seen it happen at work with the Perrelli scorpion tires on the 150s the same thing happens and the tires get replaced for nothing

 

They might get me on rotation. I went to 12k kms which is 7400 miles. Also because they are E rated I am running at less psi remember. Could that be an issue?

 

the outter edges would be smooth if they were under inflated

 

Smooth as in bald or smooth as in rounded corners on the tread?