will 19'x8.5 front and 19'x10.5 works for 350z
 

Hi i was wondering if i can put 19'x8.5 front and 19'x10.5 volk racing sf challenge wheels for the car because i see most 350z go with 9.5 and 10.5 for the width of the wheel but i want to go with 8.5 front and 10.5 rear soo i can have 19/235 front tires and 19/275 rear tires..soo i wonder if that will work ?

yeah it would work.....but i ask why you want some seriously smaller tires up front? this car understeers like crazy. i would go 245 or more up front. also, 275 will fit great on 9.5" rears, too. no need to get 10.5" unless you like the stretched look.

well i wanted 235 up front because it wont float on wet roads while turning and 10.5 for the rear is mainly for the stronger staggered fitment looks

Yup!

i have 19x8.5 with 245 tires and 19x10.5 with 285 rear tires :)