What if I Have Mismatched Tires?


As a general rule, your tires should all have the same tread pattern, construction and size, meaning they should all be the same make, model and age. If they aren’t, you’ll compromise on your car’s control, traction, stability and ride. Mismatched tires could mean tires from different manufacturers, winter tires with all-season tires, run-flat tires with conventional tires or tires with different tread patterns.

Until you can invest in an entire set of tires of the same make and model, and if you’ve only got one mismatched tire in the set, you should put it on the rear. If the tire that had a problem was on the front, take one of your rears and put it on the front to replace it, then put the mismatch tire back on the rear axle. This will probably mean the least impact on handling ...[more]

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How to Choose the Right Tire


Before we start talking about which tires you need, you should determine whether it’s time to go ahead and get tires…

The minimum depth where tire tread is still effective is 2/32”. Anything lower than that and your tires will no longer resist hydroplaning in wet weather, dry traction is reduced and traction in snow is practically nonexistent. Tires now include “wear bars” at the base of the tread, running at a right angle to the tread; when the wear bars show through, the tires are at the end of their service life. The old-timer’s gauge is the “penny test,” where you put a penny, Lincoln’s head down, into the tread. If the top of the tread no longer touches Lincoln’s head, then it’s time (some now recommend the same test with a nickel or quarter).

Of course, when yo ...[more]

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Performance Tire Roundup


Performance cars need performance tires. But what’s the difference between performance tires and ordinary touring tires?

Performance tires are usually made with a softer tread compound for “stickiness” and improved grip, reaction and handling on dry pavement – the compromise is in shorter tread life. Many true performance tires also don’t do well in colder weather, and many drivers switch over to all-season or winter tires in colder months.

Tires with H or V speed ratings are typically considered “performance touring” tires, and many are designed for all-season wear. Tires with the W, Y or Z rating (and an aspect ratio of less than 55) are ultra-high-performance tires, designed for high-speed handling.

We rounded up a few of our best- ...[more]

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How Tires Can Vastly Improve Your Fuel Economy


When you think of enhanced fuel economy, you probably think of the usual things…aerodynamics, engine size, rear end gear ratio, vehicle weight, driving style and speed, and your engine’s state of tune (clean air filter, good spark plugs, etc). Did you know, though, that your tires can have a huge bearing on gas mileage as well? 

  • Tire Size – The bigger, wider and heavier a tire is, the more rolling resistance it presents. Don’t believe me? Go for a ride on a skinny-tire racing bike, then go for a ride on a fat balloon-tire beach cruiser and see the difference. You shouldn’t go for a narrower tire than original equipment, as engineers tune suspensions and steering for a given tire size, but also remember that wider tires can cut into your fuel economy (even if th ...[more]

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How Does Your Driving Style Affect Tires?


Does your driving style affect how your tires wear and hold up? You better believe it does.

If you put a lot of interstate miles on your car, that’s about the easiest thing you can do for the tires and your car’s drivetrain both. Tires and engines both love maintaining steady speeds for hours on end (provided the tires are at the correct inflation).

Here are some things that are likely to compromise your tires’ life, though: 

  • Frequently hauling heavy loads (especially for pickup truck tires)
  • Frequently pulling a trailer
  • Hard cornering
  • Hard acceleration
  • Taking potholes, railroad tracks and bumps at high speeds

It’s not surprising that heavy loads or trailer use would wear out tires prema ...[more]

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OE Tires vs. Replacement Tires


Soooo…it’s time to replace the tires on your late-model car. Maybe you weren’t that crazy about the original equipment (OE) tires, or you just want to try something different. Well, here are some things to consider.

The engineers and design teams that worked on your make and model of car selected a specific brand and model of tire for it. All of their formulations for ride comfort, handling, steering response, traction, noise and vibration isolation, roughness and  overall performance used that specific tire as a benchmark (of course, the bid process for tires entered into it as well). A luxury car might have been designed around a grand touring tire with a quiet ride, an eco-friendly hybrid might use a low-rolling-resistance tire, ...[more]

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Tire Load Rating


You’ve probably heard the phrase “tire load rating” and wondered what exactly it meant. Tire load ratings are a pretty important part of safety and proper tire maintenance, so let’s break it down: 

  • Your tires will have a service description embossed on the sidewall. The service description includes proper inflation levels, tire size, speed rating, and other information. You’ll also find tire load rating on the service description.
  • The higher the load rating number, the more weight your car’s tires are able to handle. However, that doesn’t mean an actual weight limit. Tire load ratings are coded according to federal standards. A rating code of 60 means actual weight rating of 250 kg/550 lb. Rating code of 80: 450 kg/550 lb, rating code of 125 ...[more]

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How To Measure Tire Pressure


Rubber is a porous substance, and tires will inevitably lose some air over time due to seepage. Tire pressure is something that’s neglected by many drivers, as an “out of sight – out of mind” sort of condition. Low tire pressure, however, costs money in terms of increased rolling resistance and poorer gas mileage. Tires that are habitually run low on air also wear out prematurely, due to heat buildup and an uneven wear pattern.

The good news is that it’s an easy problem to fix.

For 100 years, tires have used the same valve design (known as a Schrade valve), identical to the valves on bicycle tires. They’re still the same design because the Schrade valve does its job well and there has never been a need to improve on it. 

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Tire Pressure and Temperature


You’ll notice that the stamp on your tire’s sidewall specifies inflation for HOT tires. Why is that?

Pretty simple physics, really. Gases expand with heat, meaning both the temperature of a friction-heated tire and ambient temperature of outside air. A rule of thumb is that for about for about every ten degrees Fahrenheit change in air temperature, your tire’s inflation will fluctuate by about one PSI. In most parts of the United States, the difference between winter and summer temperatures can be as much as a 50-degree spread, meaning a potential fluctuation of five PSI. That’s not even thinking about the 20-degree spread between hot afternoon temperatures and cooler nighttime or early morning temperatures in summer.

Tires that are low by 5 psi will  hurt traction, steering re ...[more]

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How Different Tread Works


Surely you’ve noticed the wide range of tread patterns and styles available between different tire brands and models. Here’s a brief technical breakdown of how they all work: 

  • Tread patterns: Tires are commonly designed with symmetrical, asymmetrical and directional tread patterns. Symmetrical treads are the most common, with ribs or tread blocks where the inboard and outboard sections of the tire come together and match. Asymmetrical tread patterns vary the groove pattern of the tire to help deflect water and snow in all-season conditions, making them a good pick for year-round use. The grooves on directional tires form a V shape at the tire’s center, helping to displace water and avoid hydroplaning. The geometry of the tread blocks and tread pattern is designed to fulfill very dedicated, s ...[more]

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