Motorcycle Tyres

Tyre Pressures

Keep in mind that hard cornering, passengers, heavy loads and sustained high speeds will require higher pressures (up to that indicated on the sidewall).CHECKING TYRE PRESSURE IS THE MOST IMPORTANT TYRE

For high-speed, fully loaded or dual-riding touring-motorcycle applications, inflate tyres to maximum recommended by vehicle manufacturer for Dunlop fitment. Never exceed maximum load indicated on tyre sidewall or vehicle capacity load found in owner's manual, whichever is lower.

Underinflated tyres can result in imprecise cornering, higher running temperatures, irregular tread wear, fatigue cracking, overstressing and eventual failure of the tyre carcass, or loss of control, which could cause accident, injury or

Overinflating tyres does not increase load-carrying capacity, but will result in a hard ride and accelerated tyre wear in the center of the contact patch. Check cold tyre pressure frequently with a good-quality gauge that holds a reading,
and always before extended trips.

Loss of pressure may occur due to worn-out or badly seated valve cores. Check valve cores, and if necessary, tighten for correct seating, or remove and replace them. A metal or hard-plastic valve cap with an inner gasket should be used and installed finger-tight to protect the valve core from dust and moisture and to help maintain a positive air seal. Loss of pressure may also be caused by tube damage, as well as cracked rubber tube or tubeless valve stem bases.

Inspect rim bands, tubes and valves. Replace if damage or cracking is noted. Repeated loss of inflation pressure may result from undetected tyre damage.

Visually inspect tyres for punctures, cuts, abrasions, cracks, bulges, blisters or knots. It will be necessary to dismount the tyre to complete an inspection for internal damage and any need for repair. Only certain punctures in the tread area may be repaired, and only if no other damage is present. The appearance of stress cracks in the tread grooves is one indicator of overload and/or underinflation. If you find evidence of tread-groove cracking, you should remove and replace the tyre immediately. This damage is permanent and non-repairable.

Tires with non-repairable damage must not be used again. Damage caused by impacts, penetrations or continued underinflated/overloaded use is progressive and can result in sudden and complete tyre failure and accident, injury or death. You should always seek expert inspection of the dismounted tyre following curb, chuckhole or other impacts, evidence of penetration beyond the tyre surface, bulges or low pressure. You should not continue riding on such tyres.

Inspect their tyres frequently for damage and to always heed warning signs such as vibration, handling instability, rubbing or tyre noise that occurs during operation of the motorcycle.

Tyre Selection

When selecting new Dunlop motorcycle tyres, be sure they meet the requirements of your customer's motorcycle and its expected usage. Fitment of radial tyres to the wrong vehicle can cause instability and accidents.

Some motorcycles may be fitted only with radials. Consult motorcycle manufacturer before fitting radial replacements to ensure you are applying the correct specification and combination for your customer's motorcycle.

Some motorcycles may be fitted only with radials that match original equipment. Comply with the motorcycle owner's manual recommendations.

Front and Rear Matching

Remember, the correct matching of front and rear tyres is important to obtain optimum performance and handling. Follow the Tyre Selection guidelines.

Mount only tyres marked "front wheel" on the front position and only tyres marked "rear wheel" on the rear position.

A new front tyre with a worn rear tyre can cause instability. Mixing radials, or mixing radials with bias or belted-bias tyres, may adversely affect handling and stability, and should only be done when specifically fitted and/or recommended by an OE vehicle manufacturer. It should be noted that many factors other than tyre incompatibility can affect the handling of a motorcycle, including the weight and height of the rider, mixing worn with unworn tyres and the fitment of luggage or fairings.

Consult the motorcycle manufacturer before making modifications from stock.

Load Carrying Capabilities

Tyres offering different load-carrying capacities are available. Consider carefully the weight of the motorcycle, whether it will carry passengers and the weight of any optional equipment. Remember, the loadcarrying capability of the tyres is also reduced by underinflation.

It is possible to overload a tyre even though it is the size specified by the motorcycle manufacturer. Maximum loads and the cor responding pressures are indicated on the sidewall of all Dunlop street tyres.

Before riding, the motorcyclist must determine the total weight of luggage, equipment and rider(s) to be added to the motorcycle. T the total weight of luggage, equipment and rider(s) must never exceed the vehicle load capacity found in the motorcycle owner's manual, or the maximum load molded on the tire sidewall.

Do not to pull a trailer behind their motorcycle. Trailers may contribute to motorcycle instability, grossly exaggerated tyre stresses and overload. Such stresses and overload can cause irreversible damage resulting in sudden tyre failure, accident, Sidecars should not be fitted unless approved by the motorcycle manufacturer.

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