Why do tyres perish

To explain further, let's dive a little deeper into the design of the tread. Tread grooves and sipes are essential in ensuring safety on wet and flooded roads. With low-profile tyres in particular, a higher percentage of tread void is necessary to displace the water and to improve protection against aquaplaning. Cross-grooves for water drainage take the form of freestanding blocks in the shoulder area.

These shoulder blocks can wear into a heel and toe pattern as a result of a rolling movement under certain operating conditions. As the tyre rolls along the road, the freestanding blocks deform as they get closer to the contact patch of the tyre, and they compress as they touch the tarmac.

However, after they lose road contact the blocks snap back into their original shape, rubbing the surface of the road as they do so. The result is wear on the block run-out edge and is more likely to appear on non-driven wheels.

A minor amount of heel and toe wear is reasonable and has no discernible effect on driving comfort. But if the wear is more extensive, more specific issues could be to blame, including improper inflation, excessive toe-in and low-wear applications. You will find this wear pattern on the driven wheels of high-power cars.

High torque levels generated during strong acceleration, in stop-start urban traffic or when accelerating away from traffic lights can quickly increase wear of the tread in the centre of the tyre. The biggest cause of one-sided wear is incorrect axle geometry.

Deviations from the standard specification can develop over time and are the result of - for example - mounting a kerb. Lowering the height of a vehicle in conjunction with low-profile tyres can also negatively affect wheel alignment. Whilst driving, modified suspension arms tend to cause the alignment of the wheels to deviate from the specified position. The problem can catch drivers unaware, because wheel alignment values can still be found to be within tolerance limits when measured in a static position on an axle measurement bench.

Thus, the result may be an increase in non-uniform tread wear. An impact break is damage inflicted on the carcass the casing of the tyre after the tyre comes into contact with certain obstacles. Search My Stuff What's New 3 12 24 Tyre Life - Perished in under 3 years!!!!!! She complained to me that she needed to put air in one of the tyres every week so took it to the garage thinking she's got a slow puncture. It turns out all 4 tyres are perished For a reputable brand like Dunlop to not last even 3 years looking at the state of them i think she probably should have had them replaced a while back!

Its not like the car's been standing unused, it get used most days. I've emailed Dunlop and Blackcircles who supplied the tyres as it could be a manufacturing or materials defect? Anyone else experienced such short life from Dunlop tyres? RicksAlfas 11, posts months. Have a look at the DOT figure on the sidewall. In my experience, budget tyres are sometimes made in a softer compound so grip just as well as premium tyres, but wear out quicker, which is what you need.

The difficulty is choosing a brand which behaves like this and isn't just plain nasty - which I'm sure plenty of us have experienced. Re: Tyres "perished" 3 Post by Mike Whiskey » Wed Jul 06, am This topic is also quite hot with caravanners, with most people saying change the tyres after 5 years, and of course these still have loads of tread on them.

I was sceptical when i started, and ignored the cracking on mine until i inadvertently parked it with the tyre on a large stone. Looking at the cords through the many now open cracks persuaded me that it was actually an issue! How much does a set of 4 tyres cost, compared to the value of your pride and joy, or the lives of the loved ones you transport in it, or the queue of schoolchildren waiting for the bus insert own worst case collision scenario here.

Yes thats a bit over emotional, but i was sceptical until convinced by what i saw before my own eyes. I was lucky and didn't have to be convinced by the blow out at speed! Re: Tyres "perished" 4 Post by tractorman » Wed Jul 06, am I'd agree with the budget tyre option, though you have to be careful - I bought some "good make" budget tyres Toyo I think for my first Golf and they did wear quickly and gripped really well.

I did the same with the Passat a different quality brand's budget range and spent a lot of time going in the wrong direction - and they didn't wear well either! The first two numbers indicate the week when the tyre was manufactured, while the remaining two digits indicate the year of manufacture.

Checking for these cautionary signs at least fortnightly could save you investing extra time and effort in repair, and most importantly could avert a serious accident from occurring. If you enjoyed this article make sure you keep checking our blog section, where you can read a number of our other blog posts such as the ten fastest cars in the world or our Top Gear debate.

Mike Bourne. Did you enjoy this blog post? Yes No people found this review helpful. Ready to buy? Choose from our best selling car tyres by manufacturer. Toggle navigation. Reduced Tread depth One of the foremost indicators that your tyre is now ready to be dumped is when it loses its tread depth. How to Measure Tyre Tread Depth Keeping a tab on the tread wear indicator which is built into the tyre is a good way to measure the tread depth.

Cracks on the Sidewall No matter how expensive your tyre is, the day you notice those damaging cracks on the sidewall, you should start contemplating about purchasing new tyres. Cracks on the sidewall indicate that the tread is now drying out and giving way.