after having my car for a year and half and 18K miles i looked at the front tires and the inner part of the front tire tread is almost completely gone while the middle part is still good outer part is pretty much gone too if that makes any sense. My rears r still in pretty good condition and no problem there is this an alignment issue? or is this normal wear and tear if not is this something that can be fixed under warranty?

 

Under inflation?

 

that sounds really odd...it definitely should be under warranty for starters. i only had normal stock suspension for about 2 weeks when i got my G brand new but i still dont think that is in any way normal. swing by the dealership and show them, maybe have them do an alignment

 

There's no warranty for treadwear, only for defects. If you've gotten 18K on your OEM Potenzas, you've gotten more than a lot if us have. Have your alignment checked for sure. Make sure to check inflation pressure too.

 

its always at 35 psi my rears are fine but my fronts are not so good at least the sides the middle part of the tire is in same condition as the rears but the inner part is completely bald !

would infiniti check under warranty and fix if ther really is something wrong?

 

Out side of the tires wearing faster than the middle is under inflation

 

Did you do any tire rotations? I don't want to make assumptions, but if tires are
rotated as recommended, all four tires should be wearing evenly...unless the allignment
went out suddenly which would cause what you describe PLUS you would immediately
notice steering pull or loss of "on center" tracking. I got 44k from my last Potenza
Pole Positions on my M35X and drove it HARD. You should get alot more miles
from those tires with proper inflation, rotations every 5K and proper allignments..
even if you drive hard.

 

My tires are always at 35 psi def never lower then 32 psi I check monthy so that's not the promblem. I didn't rotate my wheels because they are staggerd so we all know you can't rotate those. The car doesn't pill from to any direction so I don't know.

 

AH...additional information omitted in previous posts. Is your "Staggered wheels/tires"
a factory set-up or something you did?

 

everything is stock

 

Really? I'm at 25K and I'm still on my OEM Bridgestones. I don't drive hard very often, but once in a while I'll push my car. My front inner tire is pretty bald though, so I'm due for new tires real soon.