Also have your vehicle’s alignment and suspension checked before mounting new tires, to prevent them from wearing prematurely. Check for uneven treadwear, which typically denotes poor wheel alignment or worn suspension components, and have both checked by a shop.Look for cracks, cuts, or bulges in the sidewall or tread, and replace tires that have them.Don’t use the pressure on the tire’s sidewall that’s the maximum pressure for the tire. Be sure they’re inflated to the air pressure listed on the placard on the doorjamb or inside the glove compartment or fuel-filler door. Check the air pressure each month when the tires are cold (before they’ve been driven more than a couple of miles).Many of today’s tires last 50,000 miles or more before they wear out, though heat, environment, potholes, and underinflation can weaken them. Longer-lasting tires make safety checks more critical than ever. Don’t buy tires more than a couple of years old. The last four digits show the week and year the tire was made for example, the digits 2321 would signify that the tire was made during the 23rd week of 2021. Manufacture date code: Every tire has a Department of Transportation number after the letters on the sidewall. For temperature resistance, scores range from A (best) to C. Traction and temperature scores: Those scores denote a tire’s wet-stopping ability and temperature resistance. But the numbers are assigned by tire manufacturers, not an independent third party. A grade of 300 denotes a tire that will wear three times as well as a tire graded 100. Treadwear grade: A government-required number that indicates a tire’s expected wear. Winter tires may carry the letter R (106 mph) or higher. Climbing up the scale are V (149 mph), ZR (149-plus mph), W (168 mph), and Y (186 mph) ratings. Speed rating: A letter denoting the tire’s maximum speed when carrying the load defined by the load index-and not how fast you should drive! Standard all-seasons are usually rated T (118 mph) and H (130 mph).
The 94 here means 1,477 pounds per tire-pretty typical for a midsized car tire. Load index: Shorthand for the weight each tire can carry safely. Size: On the tire below, 215 is the cross-section width in millimeters 60 is the ratio of sidewall height to its width (60 percent) R indicates radial-ply construction and 16 is the wheel rim’s diameter in inches.
#COMPARE TIRES MANUAL#
Check your owner’s manual for more information. When replacing them, we recommend staying with the size and speed rating of your car’s original tires. Tires have a wealth of information encoded on their sidewalls. These systems don’t use pressure sensors and therefore cannot display pressure. Indirect systems rely on the antilock brake systems to measure wheel speed and interpret the pressure. Some just alert of pressure loss with a warning light, but better systems provide a readout of the pressure in the tires. These systems, called direct TPMS, may require batteries that must be replaced after several years, often leading to replacing the entire sensor. Many wheels are fitted with sensors that monitor the pressure and send the data wirelessly to the car’s instrument panel.
#COMPARE TIRES DRIVER#
The federal requirement stipulates that the car be able to monitor the pressure and alert the driver when it drops significantly, but it does not specify the technology. Since their introduction, government studies have found that the systems have led to a significant reduction in underinflated tires on the road, benefiting fuel economy and safety.
Tire pressure monitoring systems (TPMS) have been standard equipment in all new cars since model year 2008.
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