All car tyres wear – they are, after all, consumable items. However, some car tyres wear faster than others. Let’s take a look at eight aspects that affect car tyre life.
1. Wheel Alignment
When your car’s wheel alignment is correct, the tyres can run true on the road. This means that a balance exists between the car tyre’s drag and the amount of compliance in the car’s suspension. Incorrect alignment spells increased wear, and can affect your rear wheels as well as the front ones.
2. Speed
Continuous high-speed driving accelerates car tyre wear. If you doubt this, just take a look at Formula One – pit stops aren’t to give the driver a rest while the tyres are changed!
3. Driving Style
If you drive sympathetically, your car tyres will last longer. Drive aggressively and you’ll pay for it through having to replace your car tyres sooner. An aggressive driving style will raise car tyre flexing and running temperature, and increase tread wear.
4. Car Tyre Placement
On a rear-wheel drive car, the front tyres must cope with steering and braking while the rear tyres offer traction as well as grip. On a front-wheel-drive car, the front tyres have still more to do, consequently wearing faster.
5. Vehicle Weight
Heavier vehicles wear our car tyres faster than lighter ones. There are, of course, heavier duty car tyres to compensate for this to some extent. However, the basic principle remains.
6. Car Tyre Type
Car tyres are constructed to meet particular needs. A performance tyre will give superior grip but will wear out sooner, as it has a softer rubber compound. Conversely, a harder, long life tyre will offer a longer life, at the cost of lesser grip and increased noise. There are tyre types that offer a compromise between the various demands on car tyres.
7. Tyre Pressure
An underinflated car tyre flexes more, runs hotter and wears faster than a correctly inflated one. Underinflation also increases fuel consumption, by creating additional tyre drag. Overinflation is nearly as bad, causing strange wear patterns and reducing grip.
8. The Passage of Time
This is the one aspect affecting tyre life that can’t be avoided. Ultra violet light causes rubber to degrade, as do chemical spills on the road. The usual giveaway is the appearance of cracked sidewalls…themselves indicative of a car tyre that is old. A car that is garaged will receive better car tyre life than a car that lives outside.
As is now clear, the factors affecting car tyre life – and performance – are many and varied. Mechanical sympathy and assiduous car maintenance positively affect tyre life. Conversely, it isn’t really surprising that bad habits can affect tyre life negatively.
Article Resource
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.
Showing posts with label alignment. Show all posts
Showing posts with label alignment. Show all posts
Monday, 19 November 2012
Wednesday, 21 December 2011
For Your Tyre Treads' Sake. Wheel Alignment
Wheel alignment? Surely your car's wheels are in line all the time? In fact, they aren't necessarily. Speed bumps, kerbing, speed pads and general wear and tear on a car's suspension and steering can put the wheels out of alignment. Misalignment may be felt as pulling to one side or another, and/or strange steering. In the longer term, your car tyres will suffer – bad wheel alignment can radically reduce tyre life.
So, how do you fix poor wheel alignment, thus making your car steer and brake better, as well as achieving maximum car tyre life? The good news is that car manufacturers provide a means of adjusting wheel alignment. The not so bad news is that you can't correct poor alignment yourself.
Cue a visit to your local friendly tyre man. Good tyre bays (and garages) have the equipment to check and adjust wheel alignment. All you have to do is watch (or not, depending on your preference) and pay for the work. Then, drive away secure in the knowledge that your car is shipshape in the wheel alignment department.
What happens in a wheel alignment session? Generally, three things are checked, and adjusted as necessary. The first check establishes that the car tyres are vertical, as viewed from the front or rear. Sometimes, the tyres may not be truly vertical. Some cars' tyres sit at a slight angle from the perpendicular. This is the camber angle, which can be adjusted to meet the car maker's specification.
The second check involves another angle, the castor angle. Does your car run on castors? Technically, yes, the castor angle permits the wheels and tyres to return to straight ahead when the car is rolling with no steering input. As you know, your front wheels turn from side to side in response to your turning the steering wheel. No matter how the wheels and tyres pivot, a line drawn through the centre of the axis on which they pivot won't be vertical. The line has to lean backwards slightly and if it doesn't, the steering will feel very odd. Again, this can be cured by adjustment.
The last check is on a figure called the 'toe'. All car suspension has a small degree of flexibility built into it. So, if the car tyres are parallel at rest, the drag between them and the road as the car moves would cause this flexibility to allow the wheels to splay very slightly. You wouldn't see this but your tyres would soon tell you all about it, by wearing out the inner edges of their treads. So, the wheels are usually set to 'toe-in', so they run parallel. If the tyres toe out, if the toe-in is too much or if the toe angle varies from side to side, the car tyres will wear out prematurely. Curing this is again a matter of adjustment.
Wheel alignment used to be checked with a special gauge that used a mirror and lens system. Nowadays, it's common for car tyre bays and garages to measure the angles involved using laser equipment. Yes, accurate measurement is necessary. In some instances, worn suspension or steering components mean that a problem can't be adjusted away. Then, the tyre man in question will tell you what needs repairing or replacing for accurate alignment to be achieved. It's also the case, especially on a car with independent rear suspension, for the rear wheels and tyres to be misaligned. Once again, adjustment is usually possible.
Is it possible to stop your car's wheels becoming misaligned and making the tyres suffer? In a word, yes. Don't kerb your car tyres. Avoid potholes and traverse speed pads carefully. Above all, always negotiate speed bumps with the tyres on one side of your car. Straddling speed bumps is a major cause of both wheel misalignment and tyre carcass damage. You have been warned!
Article Resource
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.
So, how do you fix poor wheel alignment, thus making your car steer and brake better, as well as achieving maximum car tyre life? The good news is that car manufacturers provide a means of adjusting wheel alignment. The not so bad news is that you can't correct poor alignment yourself.
Cue a visit to your local friendly tyre man. Good tyre bays (and garages) have the equipment to check and adjust wheel alignment. All you have to do is watch (or not, depending on your preference) and pay for the work. Then, drive away secure in the knowledge that your car is shipshape in the wheel alignment department.
What happens in a wheel alignment session? Generally, three things are checked, and adjusted as necessary. The first check establishes that the car tyres are vertical, as viewed from the front or rear. Sometimes, the tyres may not be truly vertical. Some cars' tyres sit at a slight angle from the perpendicular. This is the camber angle, which can be adjusted to meet the car maker's specification.
The second check involves another angle, the castor angle. Does your car run on castors? Technically, yes, the castor angle permits the wheels and tyres to return to straight ahead when the car is rolling with no steering input. As you know, your front wheels turn from side to side in response to your turning the steering wheel. No matter how the wheels and tyres pivot, a line drawn through the centre of the axis on which they pivot won't be vertical. The line has to lean backwards slightly and if it doesn't, the steering will feel very odd. Again, this can be cured by adjustment.
The last check is on a figure called the 'toe'. All car suspension has a small degree of flexibility built into it. So, if the car tyres are parallel at rest, the drag between them and the road as the car moves would cause this flexibility to allow the wheels to splay very slightly. You wouldn't see this but your tyres would soon tell you all about it, by wearing out the inner edges of their treads. So, the wheels are usually set to 'toe-in', so they run parallel. If the tyres toe out, if the toe-in is too much or if the toe angle varies from side to side, the car tyres will wear out prematurely. Curing this is again a matter of adjustment.
Wheel alignment used to be checked with a special gauge that used a mirror and lens system. Nowadays, it's common for car tyre bays and garages to measure the angles involved using laser equipment. Yes, accurate measurement is necessary. In some instances, worn suspension or steering components mean that a problem can't be adjusted away. Then, the tyre man in question will tell you what needs repairing or replacing for accurate alignment to be achieved. It's also the case, especially on a car with independent rear suspension, for the rear wheels and tyres to be misaligned. Once again, adjustment is usually possible.
Is it possible to stop your car's wheels becoming misaligned and making the tyres suffer? In a word, yes. Don't kerb your car tyres. Avoid potholes and traverse speed pads carefully. Above all, always negotiate speed bumps with the tyres on one side of your car. Straddling speed bumps is a major cause of both wheel misalignment and tyre carcass damage. You have been warned!
Article Resource
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.
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