2003 Yamaha Motorsports Grizzly 660 Auto. 4x4 Owners Manual - Page 58
2003 Yamaha Motorsports Grizzly 660 Auto. 4x4 Manual
Page 58 highlights
EBU00157 Tires WARNING POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire pressure. WHAT CAN HAPPEN Use of improper tires on this ATV, or operation of this ATV with improper or uneven tire pressure, may cause loss of control, increasing your risk of accident. HOW TO AVOID THE HAZARD 1. The tires listed below have been approved by Yamaha Motor Co., Ltd. for this model. Other tire combinations are not recommended. ACE-01E ACE-01E 2. The tires should be set to the recommended pressure: G Recommended tire pressure Front 35 kPa (0.35 kgf/cm2, 5.0 psi) Rear 30 kPa (0.30 kgf/cm2, 4.3 psi) G Check and adjust tire pressures when the tires are cold. G Tire pressures must be equal on both sides. 3. Tire pressure below the minimum specified could cause the tire to dislodge from the rim under severe riding conditions. The following are minimums: Front 32 kPa (0.32 kgf/cm2, 4.6 psi) Rear 27 kPa (0.27 kgf/cm2, 3.9 psi) Manufacturer Front Rear DUNLOP DUNLOP Size AT25 × 8-12 AT25 × 10-12 Type KT131 KT135 5-10