Two common causes of early tire wear out and irregular tire wear are improper inflation pressure and out-of-spec alignment conditions.
Low tire pressure is the most common cause for tires to wear out prematurely. Low tires will cause the tires to run hotter than they are designed to and will put more pressure on the outer edges of the tires.
Higher driving speeds cause more heat to build up in the rubber, breaking down the tire more quickly than at slower speeds. Similarly, taking turns at slower speeds and avoiding skidding on turns also helps the tire last longer.
Since most vehicles wear their front tires faster, within a few thousand miles, the front tires will be more worn than the backs so you won't want to rotate them then.
There is a general consensus that most tires should be inspected, if not replaced, at about six years and should be absolutely be swapped out after 10 years, regardless of how much tread they have left.
Tyres are made up of rubber polymers, and after thousands of miles and months of being on the road, they naturally weaken. This makes the outside of the tyre become hard and brittle, leading it to crack. However, this can also happen if you leave a vehicle in a garage for a few years without driving it.
Under-inflation causes faster wear on the edges of tyres. This is because under-inflation reduces the footprint from the central portion of the tyre. More weight rests upon the stiffer edges, leading to faster wear. Many motoring websites focus on the poor fuel economy from under-inflated tyres.
Factors like the smoothness of the road, presence of potholes and bumpers,the gradient of the road, its camber, curves, windings, hilly terrain etc. all impact the life of the tyre.
These factors include: Tire design from the manufacture ( some tires are built to last 70,000 miles and other are 40,000 miles so they will have very different time in use ) A lack of attention to basic tire maintenance (checking the air pressure, tire rotations, alignment, visible wear, etc.)
Under normal driving circumstances with a front-wheel drive vehicle (passenger cars, minivans, etc.), the front tires will wear at a slightly higher rate than the rear tires.
All tyres (including spare tyres) more than ten years old should be removed from service and replaced with new tyres.
One of the biggest threats to your tires is extreme heat. There are a variety of factors that can cause heat to build up around the tires, including increased air and road surface temperatures, improperly inflated tires, and overloading and unsafe driving habits such as excessive speed and hard braking.
Driving at high speeds may make you feel the thrill of an adrenaline rush, but it will also wear down your tires and your car faster. At high speeds, your tires will generate a great deal of friction with the road, as well as very high heats. Prolonged exposure to high heats will soften the rubber and weaken the tire.
The degradation of a tire occurs over time, mostly the result of a chemical reaction within the rubber components. That aging process can be accelerated by heat and sunlight. Environmental conditions like exposure to sunlight and coastal climates, as well as poor storage and infrequent use can hasten the aging process.
One of the most common causes of tire failure is underinflation. Tires that are underinflated experience excessive sidewall flexing, which causes them to run dangerously hot, especially at highway speeds during hot weather. The buildup of heat can lead to tread separation or a sudden blowout.
Tyres can become damaged for a variety of reasons, and it can happen without the driver being immediately aware there's a problem. The most common types of damage are punctures, cuts, impacts, cracks, bulges and irregular wear.
Tyres will generally last an average of 40,000km, although this can vary widely depending on quality of road surfaces and your driving style. They should be checked annually once they reach the 5-year mark, and should be replaced every 10 years at the very least.
As a general rule, the National Highway Traffic Safety Administration (NHTSA) recommends that drivers change the tires on their vehicles every six years. However, there are several factors that can place additional wear and tear on tires that force drivers to change them more frequently.
Your tires should last 50,000 to 60,000 miles on average. But that really depends on the manufacturer. Some manufacturers build their tires to last up to 80,000 miles, while some design their tires to last as little as 30,000 miles. You can see how many miles to expect out of a tire by checking its treadwear rating.
If two of your tires wear out faster, it may only be necessary to replace those two instead of replacing all four. If you do, it's important to have the two new tires installed on the back and the partially worn tires moved to the front – even on front-wheel-drive vehicles.
Tire Deterioration
Your wheels carry the full weight of the car, so when your vehicle is left in one stationary position, your tires can soon become deflated, flat, rotten, or warped. While inflating the tires can help, it's not always safe to drive on tires that sat in the garage for too long.