I've been searching around the site trying to look for a good size, but it's hard to find when everyone has different opionions. But from what i hear, the recommended size is 245/35 n 275/35.

I bought a set of Volks TE37 19/9.9 and 19/10.5 +22 all around. And from what i knoe the best tire size would be 245/34 and 275/35, if you didnt want to mess up your vdc and traction control. but since i bought the base model z..... i guess i can use differnt sizes.. any recommend size ?

 

First of all you have TE37s in 19x9.5 and 19x10.5 +22. Secondly, the tires you mentioned are 245/35/19 and 275/35/19s. I don't know where you are getting the 4 from. With a +22 offset you should be able to run 255/35/19s and 285/35/19s with a mild drop. Make sure you check your tire fitment guild for actual width and rolling diameter.