Classification According to Pattern
With the exception of certain special tires, various characteristics exist for tire treads (the part of the tire that meets the road). These characteristics are becoming more complicated as applications grow more diverse with the development of roads and vehicles.
| Requirement | Function |
| Performance | Improved driving and braking power Prevention of side slippage Steering safety Increased economy (reduced wear, gas cost) Resistance against heat generation by tire Decreased noise, enhanced ride |
| External appearance | Improved product value (smartness, style, sturdiness) |
(1) Kerf
Kerf is a small slot molded into treads to improve braking capability or prevent. It is particularly useful on wet road surfaces.
Type Rid
Advantages
- Low rolling resistance and heat generation
- High resistance to side slippage, good steering and safety
- Less vibration and good rideness
Disadvantages
- Relatively lower braking, driving power
- Grooves are sensitive to fatigue
Main applications
- Paved roads, high speeds
- Mainly used for passenger cars and buses as well as light trucks
Type Lug
Advantages
- Good driving, braking power
- Good for unpaved roads
Disadvantages
- Relatively higher rolling resistance
(low fuel economy) - Relatively greater noise
- Relatively lower registance to side slippage
Main applications
- Regular roads, unpaved roads
- Used for trucks, buses, light trucks.
Most construction vehicles and
industrial vehicles use the lug type
Type Rib-lug
Advantages
- Good steering and safety due to use of both rib and lug patterns
- Good for vehicles that use both paved and unpaved roads
Disadvantages
- Greater wear on ends of lugs
- Rips in rib grooves
- Lower driving, braking power than lug type
Main applications
- Paved, unpaved roads
- Used for trucks, buses
Type Block
Advantages
- Good propulsion, braking
- Good braking, steering, safety good in snow & mud
Disadvantages
- Wears faster than rib or lug types
- High rolling resistance
Main applications
- Snow tire
- Used for sand service vehicles
Type Asymmetrical
Advantages
- Uniform contact area
- Good wear and braking
- No need to rotate tires
Disadvantages
- Not in much use
- Little compatibility with other sizes
Main applications
- Passenger use tire (high speed)
- Some trucks
