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A tyre is a ring-shaped component that covers the wheel's rim to protect it. It enables better vehicle performance by providing traction between the vehicle and road, acting as a flexible cushion that absorbs shock.
A tyre helps the vehicle in various ways:
Supports vehicle weight
Transfers traction & braking forces to the road surface
Provides direction & stability to vehicle
Provides comfort by absorbing road shocks
Shoulder: Located between the tread and sidewall, it is the thickest part to allow easy diffusion of heat generated within the tyre while driving.
Sidewall: Bridges tread and bead - largely rubber but reinforced with fabric or steel cords to provide tensile strength and flexibility.
Tread: Made of thick rubber or rubber/composite as it touches the road surface.
Bead: Attaches tyre to the rim & wraps the end of the cord fabric. Comprising bead wire, core, flipper etc, it is generally tight around the rim to prevent the tyre from falling off the rim in the case of a sudden drop in inflation pressure.
55%. Described as the aspect ratio. This mark
represents the hight of the tyre sidewall as
the percentage of the normal section width.
195mm. This is the nominal section
width of the tyre
16 Inches. This is the diameter of the tyre’s inner rim in inches.
Load index of tyre.
Speed symbol indicates the maximum speed for the tyre at the full load
There are three types of tyres:
What are the tyre patterns?
What are bias tyres?
- A bias tyre utilises body ply cords that extend diagonally from bead to bead.
-The angle of cords range from 25 to 45º.
What are radial tyres?
In radial tyres, the cord plies are arranged at 90 degrees to the centre line of thread
• Tube-type tyres consist of a tube which is placed between the tyre and the wheel rim.
• Tubeless tyres are pneumatic tyres that do not require a separate inner tube.
Retread also known as recap or a remould is a remanufacturing process for tyres that replace the tread on worn tyres.
Choosing a wider tyre or a larger wheel than stock is known as upsizing.
*Upsizing should be carried out only as per the recommendation of the vehicle manufacturer
Better Grip and Traction: Wider tyres offer better contact patch on the road making the vehicle more planted.
Better Cornering: Stronger sidewalls minimize body roll to give better stability around a tight corner.
Better braking: Due to the larger contact patch, wider tyres effectively reduce braking distance and skidding.
Better Fuel Efficiency: In some cases, installing bigger wheels may increase fuel efficiency.