Check this link out:
http://forums.freshalloy.com/ubbthre...b=5&o=&fpart=1

Here is the TSB:
http://autoweek.com/weekart/2004/0419/350Z_tsb.pdf

The reason i am posting this is because i have a 2004 g35 coupe and am experiencing the exact same problem with my front tires. I am hearing road noise on smooth roads under 30mph and during braking. I'm going to take the TSB to the dealer and see if i can have anything done about it. I took the car in last week and they told me that there was cupping on the tires due to hard cornering. i don't corner too hard so i wasn't very happy with their response considering that these high performance tires should be able to handle hard cornering. has anyone else experienced this problem?

https://g35driver.com/forums/showthr...age=&view=&sb=


2004 Twilight Blue G35 Coupe 6MT, Stillen Intake + Z-Tube.

 

yes, exactly the same cupping at 7000 on G35 2004. Infiniti told me to pay for it myself and I know they will just start cupping again. fluxemag@yahoo.com

 

I experienced the same problem @ 10,000 miles. Dealer did 4 wheel alignment for $109. They said it would have been covered under warranty for 12,000 miles/12 months, but since my car was 12 months and 5 days old I had to pay. I tried arguing the fact that the tire damage due to alignment did not just happen in the last 5 days and the problem existed long before that, but they didn't want to hear it. "Infiniti Service" my a$$, they are no better than a Ford dealer.