Do I have enough clearance for tires?

A 235 should work. The 15x8 is 9" wide outside to outside, so, a 9.5" section width would be fine. I mean, by the math a 245/60/15 has a section of 10", so it should only hang over a half inch from what you've got there. So by the math that should work. But the amount of clearance in that picture makes me a little apprehensive about a 245. You'd be way better off with a 15x8 and 4.5" of backspace.

Is the other side the same? Or worse? They aren't always the same side to side. Heck they probably aren't even usually the same.