Ok, so I've been planning to run the stock 17" rim with stock size blizzak lm-22's (235/50/17r, 225/50/17f) on my performance 350z. Am I going to have vdc & braking issues, since the height difference is only .4"? If so, what can I do?

 

You'll be good.

 

Yup, you will be fine. I have been running my LM 22 for a few weeks now and have been through a couple snow storms. They rock. One thing I would suggest is not accelerating through a turn. Make turns slow and accelerate after you have straightened out again. Otherwise, you will have good braking and decent grip when accelerating. Drives better than my old Maxima with all season tires.