Tyres are the most neglected things in the car ,but we should better take care of them as our lives depend on them.
WHAT DOES THE TREAD HAVE TO DO?
In the dry road,tread actually reduces the performance of the car because it has the effect of reducing the contact patch area,and the forces that are transmitted through the contact patch are reduced accordingly.
But on the wet road,the tread plays an important role.
The tread is designed to disperse the water from the contact patch and thereby creating the grip with the road.
Without the tread the tyre has limited ability to grip on the wet road,making it almost impossible to stop,turn,accelerate and corner.
WHAT IS THE CONTACT PATCH IN TYRE?
The contact patch is a part of tyre that is actually in contact with the road.
It’s a small area as big as your palm through which the cornering,steering,braking,accelerating forces are transmitted.
WHEN IS A TYRE WORN OUT?
Tread wear indicators bars are moulded to tread grooves at regular intervals around the tyre to indicate when the tyre is worn to the limits of the safety.
The minimum tread depth is 1.5 mm across the width of the tread
When the tyre has worn out to the limit of the bars will be flush with the surface of the tread
While that is the legal requirement some of the car manufactures recommend you to replace your tyre before they wear to that extent.
SETTING THE INFLATION PRESSURE
Maintaining the correct inflation pressure is one of the most important things you can do to look for the tyres.
A correctly inflated tyre should wear uniformly across the tread,but one that’s incorrectly inflated will wear unevenly.
An under-inflated tyre will wear out heavily on the outer shoulders while an over inflated one will wear more in the centre.
The inflation pressure should be set when the tyre is cold.The pressure increase when the car is driven,so setting it after driving for some distance may result incorrect pressure.
THE CORRECT PRESSURE
The recommended pressure is attached on the body usually on the drivers door pillar and also in the owners manual
Inflation pressure is given for normal driving and it can load the maximum people and luggage as well.
WHEN SHOULD I CHECK THE INFLATION PRESSURE?
Tyres has to be checked regularly atleast fortnightly.
They should be checked whenever you are going for a long journey or before towing,when they have to be set higher.
Remember to check the spare always
ROTATING YOUR TYRES
Rotating your tyres can also help to get the most of them.Tyres wear at different rates depending how you drive the vehicle.
If you do rotate your tyres do it regularly,at 5000 km intervals so the disparity between those that that are wearing the fastest and those wearing the slowest is minimised.
WHEN SHOULD I REPLACE THE SPARE?
The spare tyre is kept in the back of the car, is usually forgotten.The spare of six years old should not be used in emergency.A tyre that is 10 years old should be replaced
DO MY TYRES REALLY NEED REPLACING?
Some local technician would tell you to change the tyre they have worn out without even inspecting the tyre.Don’t take their words,check them them your self.Visually inspect them for wear and tear and check the depth of the grooves and inform it to Doers.
To maximise your tyre life avoid spinning the wheels on acceleration or locking them when braking .
MAINTAINING YOUR CAR.
Keeping your car in tip top condition can extend the life of the tyres and regular wheel alignment checks are also a good idea.Please visit www.doers.co.in for fixing the appointment for the tyres replacement.