I was wandering if anyone has problems about 20mph... I get a big rumbling, noisy sound right at 20mph ... once you pass it it goes away and anything below that is cool too... Anyone else notice this or know what could be causing it? 2003 Track model.. any help would be great

 

Sounds like the infamous "tire growl" if I am making the right assumption of what you are hearing, clintzeringue. Have a dealer check the alignment.

 

I would say possibly a flat spotted tire or a balancing issue. The "tire growl" is most noticeable when slowing down from 20 mph to 0 mph which doesn't sound like his issue.

 

Get your tires checked out for uneven wear.

 

Yes, it must be a tire issue since the noise is still heard with the clutch all the way down. I didn't think the 350Z ever had to get the tires rotated? At least thats what it says in the manual.