size is 215/35/18
or would this be too low?

go wider, at least 225 or 245

from what i see it will look terrible with a foot of wheel gap.

I would think they would b too small I had 225/40 on my coupe 18.

No OP those tires will not work the are 9% off from OEM sizes. You want it to be under 5%

Agree with everyone else. Those would look like donut tires.

I would go with 225/45, 235/45, 245/45, or even 255/40 on 18's depending on how wide they are.

No.

I would be too scared of bending a rim. I'd stick with a 45 or 40 at best.

i have a 235/40 and its seems a little small

I have stock 18s with 235/45 and tthey look like off roading tires, way too big. Next time I think I am going with 245/40