Hey guys,

After I start up my engine, I hear some grinding noise when I brake for the first time coming down my drive way or when my car shifts from 1st to 2nd (5AT). I only hear this after not driving for a bit so it's only occasionally. The car is an '07 and only has 12k miles on it. Any ideas?

I tried searching and found something about the ABS not warming up?

Also, would aftermarket springs, shocks, and rims void the warranty that covers this?

Thanks

 

i think its when the brakes do some sort of self test or the abs self test, weird i know...but as fas as i know its normal

 

Sounds line you got bit by the "self tet" syndrome. It happens on every G35 at about 3-4 mph on every startup/takeoff. It is normal.