it seems somewhat difficult to run a 255/35 on a low offset 18x9.5 in the front of a s14, but I see many people run 17x10's and 17x9.5 with 255/40's in the front without an issue.
According to this calculator a 255/40r17 has the same width and overall height as a 255/35r18.
Tire Dimensions Made Simple - Discount Tire
I'm going to run a 18x9.5 +15 up front and a 18x9.5 +22 in the rear with 255/35r18 all around but I think I may have to use a 235/40 in the front for fender clearance..