IMO As tires goes I drove 225/40 and 225/45 on a 18x9.5 and its doable but very little protection and l wont do it again unless is for shows only. With a width of 9.5 the least you want is 255/30 and up but that wont agree with the arches.
225/45 was stretched on 9" wheel too
225/45 was stretched on 9" wheel too