Answer:
Check your tire pressure once a week, and stay within the guidelines on the sidewall of the tires. Change tires when they get down to 3/32 of an inch of tread. If you are an average rider, no burnouts and such. You should get about 6,000 miles on a rear tire, and about 8,000 miles on a front tire. Another rule of thumb is two rears to one front. Most people run tires too long.