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...
Large diameter wheels and wide, low profile tires go together and show up everywhere from America's new car showrooms to its roads, tracks and trails. So whether the vehicle came from the assembly line or was upgraded after it was delivered, Plus Sizing (also called "Inch-Up" sizing in other...
Brake Caliper Profile - The shape and size of the brake calipers must fit within the design and shape of the wheel. It may seem obvious, but a wheel is comprised of a hub, spokes and rim. These parts work together to...
One of the last sights drivers want to see when they are getting ready to drive their vehicle is a flat tire. They realize that in addition to the immediate inconvenience of having to install their spare tire, they will have to get the punctured tire repaired. And if their tire is a steel...
While the Tire Rack tries to keep tire costs as low as possible, price is often a consideration when purchasing tires. Even with high fuel costs, it seems less agonizing to fill the tank with fuel than invest in a set of new tires. Why is it that the price of fuel seems relatively inexpensive...
Your tires support the weight of your vehicle, right? Well they don't! It's the air pressure inside them that actually supports the weight. Maintaining sufficient air pressure is required if your tires are to provide all of the handling, traction and durability of which they are capable....
Your tires support the weight of your vehicle, right? Well they don't! It's the air pressure inside them that actually supports the weight. Maintaining sufficient air pressure is required if your tires are to provide all of the handling, traction and durability of which they are capable....
Driving at high speeds certainly helps make a trip go faster; just ask any driver who has gone "flat out" on the German Autobahn. However, with the exception of events like the Silver State Classic's Open Road Rally or a driver's school on a racetrack, it's difficult to find a place that allows...
For the last 100 years, dual tires have been used on the non-steering axles of heavy-duty commercial trucks to increase their load capacity and help maintain vehicle drivability in the event of a flat rear tire. Placing two tires on both ends of a single axle nearly doubles the weight that the...
When it comes to selecting replacement tires for a van, pickup truck, crossover and SUV, the most important consideration is to maintain sufficient load carrying capacity. Three tire-sizing systems are used on the Original Equipment (O.E.) tires fitted to today's light trucks, Euro-metric,...
One of the reasons radial racing slicks are so effective is they feature shallow tread depths, and their contact patch acts as a single unit. However, any tread design that breaks up the contact patch into smaller elements or adds additional tread depth (required to enhance wet traction) will...
Many tire manufacturers use very aggressive tread compounds for the Track & Competition DOT-legal tires they've developed for autocrossing, track days and road racing. And just like other high performance parts, these tires will provide more consistent performance and last longer if they...
Tire Set-up for Circuit Driving For maximum performance and safety on a circuit, first make sure that the vehicle itself is in perfect working order, particularly with respect to brakes, steering and suspension. Having quite a stiff construction, the P Zero Corsa does not necessarily need...
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