Roarin_8

iTrader: (5)

Took these pics today, driver's side looks a bit worn. It's currently at 30 psi. Passenger side tire looks normal, it's at 27 psi. Got these tires last June, with about 20 track passes. I don't do burnouts on the street. Is my posi going?

Driver's side rear


Passenger side rear

dannyz

I would drop the air in the driver's side to 26 to 27 pounds.
It's not your posi, the crown of the tire's just a little more worn from a bit too much air pressure.

Roarin_8

iTrader: (5)

ahhh ok thanks

BlackHawk T/A

iTrader: (3)

Agreed, the reason it wore faster was because the pressure is higher.

I'd set them both to ~26 and see how you like it.

Or if you want to even them out again I guess you could drop the drivers side to 26 and up the passenger side to 30.

dannyz

One thing you can do is wipe the tires clean and then get a piece of chalk.
Draw a line straight across both tire's and then drive a short distance.
Park and then look at the chalk mark on the tire. If the middle of the line is gone drop the pressure. If the outside edge's are gone but you can still see the middle put a couple of more pounds in it. When the chalk line is wearing even across the tire you are at the right pressure.

Roarin_8

iTrader: (5)

They are both at 27 now. I'm due for new tires soon so I'll do those techniques with the new set. Thanks for your help guys.