i recently acquired a 85 250sx. It seems to be very high geared. Must faster than my 87 big red. Anyway, I was thinking about replacing the worn out 22x11-8 with some 20x11-8's to get the gear ratio down. First question: Should I retain the stock size 22 inch tire up front or replace it with a 20 in as well. Second, should I retain the stock baloon style tires, or switch the rear to flat style like holeshots. I use this bike for basic trail riding, and fun out back.