I just put on some new rims with tires. 225/35/19 with a 8.5" up front and a275/30/19 with a 9.5" in the rear.
When i apply the brakes at all it feels like they are pulsing almost like the rotors are worped. I took it down to get an allignment and for them to check the rotors out. they said that the rotors were fine and that it had something to do with the ABS. Ive searched through several threads on here and havent found a solution to this problem.
Also, the VDC is messing up going through kinda hard corners when im not even breaking grip on the tires. I'm new to the G35 world .... any help would be appreciated.

 

Only thing I could think of from your description are the tires up front should be a 245/35. 225/35 may be too thin of a sidewall, so the car is sensing that they're rotating too fast.

 

thanks for the response, i found out what the problem was though, right where the speed sensor reads on the hub assembly/wheel bearing ... there was a few little chips out of it. so when i applied the brakes the ABS started freaking out because it thought that the front left tire was going at a diff speed than all the rest of the wheels. so new hub assembly was put on and THAT problem is solved. The problem with the VDC still exists. The only way ive found to stop it from engaging during hard cornering is to turn it off. unless someone else tells me diff, i dont think that the VDC box can be reprogrammed for the new wheel sizes. thanks again for the response.

 

275/35/19 is the proper rear tire size. Your rear tires are too short (outside diameter) compared to stock, which may be some of your VDC problem. The VDC may have some issued with that and the size of your front tires.