I would like to get a 225/45/13 tire because it is a little smaller and should help my gearing. Hoosier makes a tire that size but from what I hear Kumho is a much better tire.

Kumho only makes a 215/50/13 tire (About the same size as the street tires I'm running now). I believe the tire contact patch would actually be about the same but the Kumo 50 series is about 1" taller.

Is 1" worth it? The Hoosiers don't seem to get very good reviews but I haven't seen another 45 series for that size.