The tallest front I've put on are 215/65R15 which are almost exactly 26 inches diameter. With 4.25 inch backspace 15X7's. There was a slight tick of rubbing.
I've used 205/65R15 with good success. (25.5" diameter)
I currently been using 215/60R15 (25.2" diameter) last few times.
With my front suspension pretty much aftermarket (only the lower control arms are stock somewhat but reinforced) I've been thinking of switching to 17's.
