Id like some 18s and id like to run at least 235/35 18 tires. Whats the biggest width i can fit on stock body with springs/shocks not coilovers?

 

18x9

 

But could i fit decent tires with that? And offset front/rear?

 

You can fit 235/35/18 with an 18x9. You will want the offset in the +25 area. You'll need a fender roll in front, the tire may hit the fender liner here and there. It depends how low you are.

18x8 will make your life a little easier though.

 

Im not low at all hahaha practically stock height. If i want it really flush in the rear what offset would i need there?

 

18x9 +24 is flush with the body in the back. It sticks out slightly in front without camber.

 

If it sticks out will it rub super hard all the time? When cornering? Would pulling the fenders help?

 

It depends on how low the car is.. if you are near stock height it will probably never rub.

Like I said, you need a fender roll in front if the car is lowered. If the car is lowered the tires could rub the front inner fender liners during high speed dips.

The back will be fine as is with 235s on a 9 inch wheel in +24 offset. 235 is the widest you can go with stock fenders in front without coilovers and camber.