BLOGMotorcycle Tyre
Construction Types.
Four different construction types for motorcycle tyres.
CROSSPLY TYRES
The Crossply tyre is the classic construction design, featuring a simple layered structure with strong, durable sidewalls. This makes it particularly suited to off-road use, offering excellent impact protection and robustness. Typically constructed from rayon or nylon, Crossply tyres are generally limited to a maximum speed of 240 kmh (150 mph).
1. Bead core
2. Apex
3. Carcass (Rayon / Polyamide)
4. Breaker (Rayon / Polyamide)
5. Inner-liner
6. Sidewall
7. Tread
BREAKER TYRES
The breaker tyre evolved from the crossply design, adding internal reinforcement beneath the tread area. This improves stability, reduces tread deformation and transverse slip, and extends service life. Typically made from rayon or nylon, the breaker layers and casing often use the same material for consistent structural integrity).
1. Bead core
2. Apex
3. Carcass (Rayon / Polyamide)
4. Breaker (Rayon / Polyamide)
5. Inner-liner
6. Sidewall
7. Tread
BIAS TYRES
The bias belted tyre is an intermediate design between crossply and radial construction. It features a crossply carcass reinforced with a stabilising belt, typically made from materials such as Kevlar. Recognised by a “B” marking on the sidewall, it offers improved stability, handling and tread strength.
1. Bead core
2. Apex
3. Carcass (Rayon / Polyamide)
4. Belt (Rayon / Polyamide)
5. Inner-liner
6. Sidewall
7. Tread
RADIAL TYRES
Radial tyres feature casing cords arranged at approximately 90° to the direction of travel, with a 0° stabilising belt beneath the tread. This construction provides high stability, reduced deformation at speed, lower heat build-up, and improved high-speed performance. Compared to bias tyres, radial expansion is minimal. Recognised by an “R” on the sidewall.
1. Bead core
2. Apex
3. Inner-Liner
4. Carcass (Polyamide)
5. Breaker
6. Steel Cord Belt
7. Chafer / Rim-Strip
8. Tread