We've been helping people find the right tires, wheels and performance parts since 1979. If you're looking for the best and most accurate information on all things tires, you've come to the right place.
A tire's most important job is to carry the load required of it, and the load range/ply rating branded on the tire's sidewall indicates how much load the tire is designed to carry (at a specific pressure). Whenever changing tire sizes or from one tire type to another, it's important to ensure...
A load index is an assigned numerical value that signifies a tire's maximum load carrying capacity. They're useful to help compare load carrying capacity of different-sized tires, and as you might expect, the higher the tire's load index number, the greater its load carrying capacity. Using the...
Michelin has developed a Pilot Sport Cup "care and feeding" brochure to help drivers get the best performance out of their Pilot Sport Cup tires. Download Michelin Pilot Sport Cup brochure (PDF)
The table below suggests tire inflation pressures for competitive driving. Tires should be reset to normal inflation pressures when returned to the street. These recommendations should be used as a starting point. Pressure can be adjusted to match the driver's preferences. Adjust pressure in 2...
Tires That Help Maintain Vehicle Mobility...Even After Being Punctured If you've ever been late for a date, appointment, or meeting because of a flat tire, you already know how frustrating it can be. If you've ever changed a flat tire in the rain, after dark, or on the shoulder of a busy...
Below are some of the mathematical formulas used to answer commonly asked questions concerning fitments of light truck tires. How much extra ground clearance under the axles will be provided? or How much will it raise the vehicle's center of gravity? (New Tire Diameter-Original Tire...
While most passenger car and truck tires follow a similar sizing convention, Light truck tires sometimes (especially in the larger off-road sizes) utilize flotation sizing, which can make comparing sizes somewhat less obvious. While the tire's spec page or tire size calculator will give...
The answer could be yes, no, or yes and no! It all depends on your vehicle's tire type, setup, and whether you are replacing just two or all four tires. Are your tires directional, or non-directional? Are they mounted in a "square" setup, i.e., all four tires are the same size? Or "staggered,"...
A warranty is a manufacturer's assurance of quality that defines the period of time that they will repair or replace products that show signs of defects due to materials or workmanship. While most consumer goods are backed for their first 30, 60 or 90 days of use or up to one year from the date...
To diagnose a vibration problem, view The Vibration Diagnosis Flow Chart. Download The Vibration Diagnosis Flow Chart (PDF) If you need to download a copy of Adobe's Acrobat Reader it's available free from Adobe for a variety of computer platforms.
The term "tramlining" is being used to describe when directional control is disrupted by the vehicle's tendency to follow the longitudinal ruts and/or grooves in the road. Its name could be compared to the tram or trolley driver who does not steer because his vehicle follows the path...
While today's P-metric passenger tire sizes have existed since the early 1980s, restoring classic muscle cars and pony cars has kept yesterday's numeric and alpha numeric tires from disappearing. This chart has been developed to help you determine their equivalent Euro-metric and P-metric tire...
Shop by Vehicle for Tire Pressure Monitoring System (TPMS) Sensors Have you ever seen a vehicle with one or more tires that appear noticeably low on tire pressure? Didn't you want to warn the driver of the situation before that slight inconvenience became a calamity? What if the vehicle with...
Do you ever feel a ride disturbance or shimmy during the first few miles of driving after your vehicle has been parked for a few days, weeks or months? Then, after you drive a couple of miles, the ride smooths out and feels OK. This condition is often called flat-spotting because it is used to...
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