I, too, run 235/75/15's on my 97 Ranger 2wd. The truck sits as high as an Explorer, too. Had 'em on it when I found it and still had the 14" spare underneath. Went to a junk yard and found a 15" rim for 10 bucks, 10 bucks for a used tire at a repair place that I've used, and now I have the extra 14" spare that I don't know what to do with.