Merityre Article Archive

Last night’s frost warning was a harbinger of the approach of winter. Here in the UK, we should be used to harsh conditions. However, give us an inch (of snow) and the miles aren’t covered…the country tends to come to a grinding halt. Is there a solution? Well, the increasingly popular winter car tyres may help.

This begs a question: are winter tyres genuinely useful or are they just a way of extracting more money from we motorists? Let’s see.

Recommended in Andorra, Italy, Norway and Switzerland, winter tyres are compulsory in Austria, Germany and Sweden and mandatory in Finland. These rules naturally apply on snow-covered roads and/or during the snow season. Often, there is the distinction that the tyres must be marked ‘M&S’ (no, not Marks and Spencer, the marking stands for ‘Mud and Snow’.) Newer snow tyres may have a symbol of a snowflake in front of a mountain. Currently, the distinction between winter and snow tyres is a touch unclear. A good tyre bay will advise you of the exact designation and specification.

In fact, specification is what winter tyres are all about. Car tyres in general are made in much the same way but the rubber compounds used and the tread patterns vary. Winter tyres are made with a high silica content. The probable tread pattern has two tricks up its sleeve. One is a more aggressive tread pattern than ‘summer’ car tyres. This is present to enhance grip.

The winter car tyre tread’s second line of defence involves a winter tyre key word, flexibility. When ordinary tyres have to work in temperatures below 7 degrees centigrade, they stiffen up in the cold conditions. In winter tyres, the compound and tread pattern both improve flexibility.

The benefit of winter tyres is that they give better grip in cold conditions, in rain as well as when snow and ice are about. There are plenty of subjective reports concerning car tyres and most of those concerning winter tyres are favourable. In some cases, cars found to be pretty hopeless in snow are transformed!

Are winter tyres the car tyres for all seasons? Their name offers a huge clue here. Summer tyres will outperform winter ones on dry roads and in reasonable temperatures, and winter tyres, having a softer compound, will naturally wear faster. This suggests following the lead of many continental drivers. They have two sets of tyres, one for winter, one for summer.

This brings us, in turn, to a potentially superior arrangement, which is also popular on the continent and in some cases is a legal requirement. Generally speaking, car tyres can handle most road conditions. However, in the depths of winter, the environment down at road level can be especially harsh. Car tyres may be able to cope with the salt and grit that gives some winter grip but our alloy wheels can suffer. Many popular cars have base models that wear steel wheels. One solution is to have a set of winter tyres on these. A set of steel wheels, with winter tyres, balanced and ready to roll can be fitted when the thermometer starts to plummet. With these ‘winter wheels’ fitted, your car can take on whatever the season has to throw at it, while your pristine summer wheels can live in cool, dark storage, ready for Spring. Bear in mind that suitable wheel nuts/bolts will have to be factored into the equation.

What’s the bottom line? Assuming you need to use your car in the off season, winter car tyres are worth the investment.

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Merityre.co.uk are one of the leading UK independent suppliers of car tyres. Why not visit their website for an online tyre quote or contact your nearest fitting centre.

Car tyres. We tend to take them for granted and, though they aren’t fit and forget items, we tend not to invest too much time in looking after them. Provided we regularly check their pressure and physical state, car tyres generally get on with their job, quietly and efficiently.  However, the following facts might open your eyes, about car tyres in general and about particular aspects concerning them.

Imagine fifty-five pence. That shiny heptagonal coin and its small circular counterpart are capital. However, the idea that you are throwing this much away with every gallon of fuel you use is a less than capital idea. Yet, running your car tyres at less than the recommended pressure can cost you 10 percent in terms of fuel economy. As under inflated tyres are harder to move along the road; they give the engine more work to do and this means more fuel is burned.

The law is an ass, said Mr. Bumble, in Charles Dickens’ ‘Oliver Twist’. He wasn’t talking about car tyres but the principle nevertheless applies. The law says that your car tyres must have no less than 1.6 millimetres of tread. Legal? Yes. Sensible? That’s arguable. A mere 1.6 millimetres of tread is generally accepted as cutting things fine. Tyre manufacturers mould two millimetre-deep tread wear indicators into tyres, with good reason. It’s arguably better to comply with the spirit of the law here rather than the letter, as the consequences of an uncontrollable skid in wet conditions cost a great deal more than new tyres.

What makes car tyres grip the road? The different types of tyre – all weather, winter, mud and snow, all terrain and performance – share common elements. The hardness or otherwise of the rubber in them and the tread pattern they have make a major difference in terms of grip, tyre life, on-road behaviour and longevity. In general though, it is the hardness (or softness) of the tyres’ compound and the water-clearing abilities of the tread that make the most difference to the level of grip given.

There’s nothing better than a new set of car tyres, is there? Some have found out to their cost that brand new tyres aren’t necessarily as grippy as their predecessors. The good news is that this relatively lessened grip doesn’t last long. If car tyres weren’t coated in an anti-stick compound during manufacture, they’d never leave the mould. This coating has to wear away before full grip is achieved. So run your new tyres in, driving more carefully for the first 500 miles or so. This is particularly important in wet conditions.

More than 40 million car tyres. That’s a lot of rubber but it is the number of tyres that are disposed of every year. Following EU directives means that comparatively few tyres go into landfill these days. Some are treated to new treads, minced tyres become carpet underlay and some wind up as part of new road surfaces. Plans are in progress to recover energy from old car tyres; they could replace coal in some industries.

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Merityre.co.uk are one of the  leading UK independent suppliers of car tyres. Why not visit their website for an online tyre quote or contact your nearest fitting centre.

It’s that time of year again. The days are short, the nights are long, precipitation is up and the mercury’s dropping. Your car’s tyres may be nearly new but there are limits to what they can do. So here are a few tips to help preserve life and limb even in the worst conditions.

There are no such things as magic tyres, despite some people’s believing that their car tyres have prestidigitatory properties. In fog, for example, your tyres won’t stop you instantly, just because you haven’t seen the line of cars up ahead in time. Equally, your tyres can’t suddenly give you enhanced grip because you need to swerve around a similar obstacle. Drive only as fast as you can see.

Rain is another condition that requires caution. Standing water in particular can be extremely dangerous.  Car tyres can dispose of surprisingly large amounts of surface water. However, when there’s too much to shift, they ride on the water surface instead. This is aquaplaning; in short, it equals no grip. Drive only as fast as your tyres will allow.

Floods are an altogether different matter. Hitting a large body of water standing a third of the way across a road at speed might give you vicious steering pull but you’ll get through if you allow for this. In deep water, your car tyres will cope admirably but your car might not. Many cars nowadays have a low-mounted air intake. If this inhales water, the engine will be wrecked. Don’t enter floodwater unless you’re certain of its depth. Keep to the crown of the road where the water will be shallowest. Keep the engine revving, to prevent water entering the exhaust and drive slowly – you have a car, not a boat. If in any doubt at all, find another route.

Snow and ice and car tyres don’t always mix. Winter tyres are a boon and it’s worth considering acquiring a set, especially if you live somewhere that experiences these conditions regularly. The usual, all-round car tyres can’t get a grip on ice and snow, even if they’re gracing a 4X4. When conditions are really bad, you may need to consider some additional hardware. ‘Snow socks’ are a new idea. These tough, woven tyre covers are easy to fit, quiet and grippy. However, they don’t last long on tarmac. The alternative is snow chains; not so easy to fit but far tougher, if noisy.

Above all, winter driving requires caution. Grip is always compromised to some extent and if you try to drive normally, losing control becomes a very real possibility. Remember also that your vision is likely to be compromised as well. Remove snow or ice from your car’s glass before moving an inch and always think about stopping distances. Modern electronic aids, such as traction control and anti-lock braking systems help but they’re no more magic than car tyres are. Should the worst come to the worst, and vision and grip both come under the general heading of appalling, you don’t have a choice. Stay at home!

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Car tyres are car tyres, right? Well, they’re all round, black things that go between your wheels and the road. However, choosing the right tyres for your car and, equally important, for your needs is imperative. Here are some pointers to help you make the right choice.

The Right Type of Tyre

There are five distinct tyre types you can choose from and it isn’t always a case of one tyre type for one car; the choice is also about usability.

Standard car tyres, otherwise known as all-season tyres, are the least specialised. They are suitable for year-round use, in wet or dry conditions. In some respects, run flat tyres lie in this arena. Run flat tyres can do exactly what their title suggests; you may continue using them, albeit at a given maximum speed over a specified mileage, even after a puncture.

The third variety of car tyres differs in the conditions to which they’re suited. Winter tyres can handle colder conditions better than standard tyres and they generally have a tread pattern with larger blocks in a more open pattern, for better grip. Our fourth tyre type is also based on the conditions to be encountered, specifically in terms of terrain, rather than climate. All-terrain tyres can cope with mud, sand and gravel and are often found on 4×4 vehicles used off the road. However, the additional grip in adverse conditions has a cost. All-terrain tyres are noisy when used on ordinary tarmac roads.

Lastly in this quintet, performance tyres are for performance cars. As well as offering superior grip in wet or dry conditions, performance car tyres usually have a higher speed rating.

The Right Tyre Size

When it comes to car tyres, it is anything but a matter of one size fits all. The manufacturer’s recommended fitment may be found in your car’s handbook and if in doubt, you could always have replacement tyres like the existing ones. However, small changes in tyre section and width can be accommodated, often beneficially. The staff of a good car tyre retailer will be happy to recommend the best tyres for you.

The Right Tyres for your Driving Needs

While remaining within the manufacturer’s specified parameters, you can ring the changes by using car tyres that suit your driving style and/or particular needs. You may need economy tyres for better mileage from your gallon. Certain tyre types are particularly quiet in use and therefore better for motorway use. Similarly, some tyres are well suited to stop/start motoring. As mentioned above, you’d be well advised to consult the tyre retailer.

The Right Price

The price of car tyres varies considerably but here, commonsense must play an important role. You can’t for example, have economy tyres fitted to a high-performance sports car and expect good results, not to mention longevity. Conversely, there’s little point in having high specification tyres fitted to a car that covers a small yearly mileage. However, if you use your car daily, economy tyres could represent false economy; budget tyres may not last as long as better quality items.

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There are many different types of car tyres. The one you choose will depend on factors such as the make of car, driving style, where you live, the time of year and how your car is used.

For instance if you spend a lot of your working day driving up and down the motorways, you will need a hard wearing tyre that doesn’t create a lot of noise. If you live in the countryside a tyre that provides better grip on muddy roads would be more suitable.

This article identifies five different types of car tyres and highlights some of the differences between them:

1) Standard/ All Season Tyre

Your car was probably driven out of the factory on all season tyres. It is an average tyre that is suitable for all year round use. It works equally well in the wet and the dry.

The tread block pattern is designed not to be noisy when used on standard roads but enables adequate water dispersion to provide grip in wet conditions.

The rubber used is a harder compound to extend the tyre’s life. This can comprise on handling and cornering but for the majority of drivers it is not noticeable.

2) Performance Tyre

Also known as summer tyres, performance tyres are designed for provide excellent grip in the dry. Often used on fast cars or for a driver whose style requires increased handling performance. They can be used all year round if you live in a region with a warm climate and little rain.

A soft rubber compound is used which decreases the lifespan of the tyre but provides enhanced grip.

It is important that the car tyres are kept in excellent condition. Driving in the wet is hard enough with these tyres but if there is any sign of wear it is virtually impossible to get good grip.

3) Winter Tyre

Winter car tyres are designed to cope with the poor weather and difficult driving conditions that the winter season brings. They can handle snow and ice. Winter tyres can have small metal studs embedded into the tread for extra grip in extreme conditions.

The tread block pattern on winter car tyres is larger and more pronounced than on standard tyres. This improves grip but also increases the tyres’ operating noise.

These tyres cannot be used all year round because in dry conditions they wear out extremely quickly and damage the road surface.

4) All Terrain Tyre

All terrain tyres provide good grip on loose surfaces such as dirt and sand. Often used by off road vehicles, they can be used on standard roads but are very noisy.

Like the winter tyre the tread block pattern is large to improve grip. The tyre’s sidewalls are stiffer to cope with uneven surfaces and unexpected potholes.

Mud tyres are an extreme type of all terrain tyres, designed to be used in mud and dirt. They have very large tread block patterns that are only suitable for driving on that type of terrain.

5) Run Flat Tyres

Run flat tyres are a relatively new concept but are now becoming more common on new cars. They are designed to minimise the loss of handling that occurs after a puncture.

The car tyre can operate without air to enable the vehicle to continue to be driven. However this is only suitable for a short distance and at a reduced speed, until the tyre can be safely changed.

For further advice consult a car tyre specialist who will provide you with impartial advice on the best tyres for your vehicle.

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