We ride alot of ATV rodeos, here in Missouri, and I just put some 18 inch tires on my bike. My question is about gearing for the tires, mods are in my signature. Our rodeos are a 5 event reace, 4 of the evens are basically different barrel configurations that you negotiate and for time, the last event is bracket drag race. I have stock gearing now, but with the tire change should I go up a tooth on the front or ? Anyone that may have experience with 18 inch tires please help. Thanks