This page includes information on:
1.Understanding tyres 2.Managing your tyres 3.Tips for commercial vehicle tyres 4.Tyre pattern types
Tyres are made of complex materials, including rubber and silicon, reinforced with layers of nylon, polyester, and/or steel cord belts. The tread is the critical part that grips the road. Tyre treads come in different patterns, made up in combinations of ribs, blocks, lugs and other elements.
This is the main element of the tread, the voids which run laterally across the tyre in from the shoulder. Their purpose is to improve traction, and also help to channel water from under the tyre. Lug pattern tyres - which are predominantly lugs, give very good traction so are used for off road vehicles and for the drive wheels of trucks and buses.
These are circumferential ribs or contact bars that run around the circumference of the tyre tread, with grooves between them. They help to improve the steering and braking effectiveness. Rib pattern tyres have good directional stability so are used for the steering wheels of trucks and buses.
These are formed where the lugs cross the grooves. Block pattern tyres have good traction and water dispersal, so are used for winter tyres and for off-road vehicles.
Other void elements in the tyre pattern include sipes and dimples. Sipes are the narrow voids and passageways on the tyre lugs, usually around 0.3-1.5 mm deep. They help to improve the tyre’s traction on wet surfaces and snow. They also assist in channelling water away from underneath the tyre, which helps build resistance to hydroplaning. Dimples are small voids sometimes found on the lugs to improve grip and tyre cooling. A larger number of voids can diminish a tyre’s grip on dry surfaces, yet offers better performance on wet surfaces. As a result, the number of voids depends on the tyre’s purpose, as specific wet or snow tyres may feature more tread voids
A fuller description of the different tyre pattern types can be found below in section 4.
Check tyre pressures regularly. Maintenance of proper tyre pressure is important for safety and to achieve optimum mileage. Uneven, over or under-inflation will lead to less grip - and therefore poorer braking and cornering - as well as premature tyre ageing and poor fuel consumption.
Tyre pressures should match the manufacturers recommendations for your vehicle, which can be found on your vehicle, and in the handbook, They need to also match the amount of load your vehicle is carrying.
You can ensure top mileage, safe performance and optimum handling of your tyres by adopting a few simple habits. Here are three simple rules to get the most out of your Birla tyres.
To ensure the safety, performance and efficiency of your vehicle, it is important to know when to replace your tyres. Here are 2 easy ways to find out whether your vehicle's tyres have worn out and need changing.
Worn tyres lead to accidents - they will not brake as fast, and risk losing grip and slipping out-of-control on corners, particularly if taken too fast or too sharply. For the sake of you own safety - and the safety of your passengers - replace your tyres as soon as you find they have worn out at a Birla Tyre dealer.
Choosing the right tyres – rib tyres for steer axles and lug or blocker hybrid tyres for drive axles - is important, and when you rotate your tyres, you need to make sure that you still have the right sort of tyre for each axle.
Choosing the right tyres for your vehicle is not difficult. Here are some key considerations to get the most suitable Birla tyre for your vehicle.
For a fleet owner/manager, you will get more value from the tyres you buy if they can be safely and reliably be retreaded.
Birla Tyres' truck and bus bias tyres are generally designed for retreadability, to help you get the best value for your fleet.
BT Products are specially designed with advance technology for optimum mileage with multiple retreads which will give value for money.
Do this every 5,000 to 10,000 kilometres between the front and rear axles to ensure all tyres wear out evenly. Here is a tyre rotation guide for different vehicle configurations.
The mixture of these pattern elements gives the pattern type. Different pattern types are better for different types of use.
Rib patterns have ribs running around the circumference of tyre, with grooves in straight lines or parallel S-shaped voids along the axis.
Uses:These tyres are generally designed for use on hard road surfaces, such as tarmac and concrete. Because they have good directional stability they are often fitted to the steering wheels of trucks and buses.
This pattern refers to a series of grooves which are perpendicular to the tyre’s circumference.
Uses: Lug tyres have high traction so are used for drive axles of commercial vehicles and for 4x4 vehicles designed for dirt roads.
A mixed shape pattern combines lug and rib features, so may have combinations of S-shaped voids along the axis, as well as perpendicular grooves.
Uses:These tyres are good for both paved and dirt roads and can be found on a variety of trucks and buses, and some can be used in all positions, including drive and steer axles.
A block shape pattern refers to designs with independent blocks along the tread, separated by a series of interconnected grooves.
Uses:The main benefit to these tyres is there ability to perform well on mud and snow. This makes them highly useful as off-road, or winter tyres, as well as all-season tyres for passenger cars.
Directional treads are often used for 2-wheeler and for passenger car tyres. They have a series of lateral grooves positioned at the same angle on both sides of the tyre. This creates a ‘direction’ as - correctly fitted - all grooves point forward.
Uses:Directional tyres are most commonly found on 2-wheelers and high speed passenger cars.
The different tyre patterns are each designed to give optimum performance for different types of vehicles in different types of conditions. Birla Tyres produces a broad range of tyres, so there is an optimum tyre for everyone. If you are not sure which is the best for your vehicle, consult the experts - go to a Birla Tyre dealer.