Close-up image of 's sport-touring RoadSmart III tyre

MOTORCYCLE TYRE PARTS EXPLAINED

WHAT ARE THE DIFFERENT COMPONENTS WHICH MAKEUP YOUR TYRE?

Rendered image highlighting the apex in a Dunlop SportSmart TT tyre

APEX

The apex is used to reinforce the sidewall and sits on top of the bead. Apex shape and material play an important role in the way a tyre behaves and provides feedback.

Rendered image showing the high-strength beads in a Dunlop TrailSmart MAX  tyre

BEADS

The beads are made from high-strength braided steel coated in rubber, and create an airtight seal between your tyre and the rim of the wheel.

Rendered image showing how belts are used in a Dunlop SportSmart TT tyre

BELT

Steel or aramid belts are placed around the tyre to reinforce strength, reduce dynamic growth at speed and provide rigidity. In some cases breakers, which are woven sheets of rubber-coated fabric, can be used for extra strength, puncture resistance and durability.

Rendered image showing woven fibre cord plies used to construct a Dunlop SportSmart TT tyre

PLY

The plies are the layers of fabric that make up your tyre’s skeleton, and are typically made of fibre cords that are woven together and coated with rubber. These allow your tyre to be flexible but not elastic. One or more layers called carcass plies placed directly above the inner liner give your tyre its strength.

Rendered image highlighting the shoulder of a RoadSmart III Dunlop tyre

SHOULDER

The shoulder area is between the centre area and the sidewall of the tyre. The shoulder design and construction plays an important role when the bike is leant over.

Rendered image showing the sidewall of a Harley-Davidson branded Dunlop tyre

SIDEWALL

This is the area of extra-thick rubber that runs from the bead to the tread and gives your tyre its lateral stability. It’s also where you’ll find all of the manufacturer information about your tyre.

Rendered image highlighting the tread on a RoadSmart III Dunlop  tyre

TREAD

This is the soft area of your tyre where the rubber meets the road. The tread provides both cushioning and grip, and its design and compound determine many of your tyre’s most important performance features. The tread can include different compounds for centre and shoulder area.

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