1994 Chevrolet S10 Pickup Owner's Manual - Page 271

When to Check Check your spare tire...' :s once a month or more. Also, check tire pressureof the the How to Check Use a good quality pocket-type gage to check tire pressure. Simply looking at the tires will tell you the pressure, especially if you have radial tires not - which may look properly inflated eventhey're underinflated. if If your tires have valve caps, be sure to put them back on. They help prev leaks by keeping outd r and moisture. it Special Tire Inflation If you have 31xlOSOR15LT/C tireson your vehicle, and: - You'll be drivingfor very long at speedsof 66 mph (105km/h) to 75 mph (120 km/h) where legal, inflate tires to psi (70 Wa) more 10 than therecornended cold inflation pressures. - You'll be drivingfor very long at speedsof 76 mph (120 km/h) to 85 mph (135 km/h) where legal, cold inflation pressures should be increased by 10 psi (70 Wa) and you must also reduce axle load capacity by 10%.Do not drive over85 mph (135km/h) even when it's legal. Inflation pressures should never exceed psi (70 P a ) above the 10 inflation specifiedfor the maximum loadof the tire.