Street Tire Sizes   Front Tire METRIC ALPHA INCH 80/90 MH90 2.50/2.75 90/90 MJ90 2.75/3.00 100/90 MM90 3.25/3.50 110/90 MM90 3.75/4.00 120/80 -- 4.25/4.50 120/90 MR90 4.25/4.50 130/90 MT90 5.00/5.10   Rear Tire METRIC ALPHA INCH 110/90 MN90 3.75/4.25 120/80 MP85 4.50/4.75 120/90 MP85 4.50/4.75 130/80 -- 5.00/5.10 130/90 MT90 5.00/5.10 140/80 -- 5.50/6.00 140/90 MU90 5.50/6.00 150/80 MV85 6.00/6.25 150/90 MV85 6.00/6.25 Tires with 2.00, 2.25 & 2.50 nominal section widths are rated for 75 mph. REMEMBER: Tire safety requires proper care and use. See your nearest Bridgestone motorcycle retailer for tire safety and speed rating information.