FAQ

Please visit the nearest DSI bicycle tyre and tube sales shop.

For both quality and price its DSI tyres and tubes.

Normally on the tyre wall tyre size may appear in all following forms or at least one.

Example :- consider a 700x35 tyre.

• E.T.R.T.O. size marking :- 37-622 (37- section width in mm, 622-bead or rim diameter in mm)
• English size marking :- 28 x 1 5/8 x 1 3/8 (28 - outside diameter in inches, 1 5/8 - section height in inches, 1 3/8 - section width in inches)
• German size marking :- 28 x 1 3/8 x 1 5/8 (28 - outside diameter in inches, 1 3/8 - section width in inches, 1 5/8 - section height in inches)
• French size marking :- 700 x 35C (700 - outside diameter in mm, 35C section width code)

• A tube type - tyre must be fitted with a tube.
• Tubeless - no need to have a tube with the tyre. But you have to use a tubeless type rim.

No, you should not

It depends on measurements (space) between mud guard & tyre outer surface, space between fork arms, width of the rim etc.

Same as Question 03

You mean application?

• MTB tyre best suited for mountain, hill, gravel roads, etc.
• STREET tyre best suited for normal city riding.
• ATB can be used for both above and in between above two conditions.
• Sleek tyres are best suited for beach riding and also for "carpet" roads.
• Racing tyres best suited for competition applications.
• Street (heavy duty type) especially for load carrying.

If you don't have a puncture or valve leak, it depends on the tube rubber compound permeability. Butyl rubber tubes keep air pressure around 13 times longer than natural rubber tubes.

As a habit if you can check it every morning.

It won't make any problem

Yes, of course. Tyres can use until the TWI mark (Tread Wear Indicator) appears. If it is not available on your tyre, use the tyre until the middle rib leaves 0.5 mm tread depth for bicycle tyres.

Yes, seems to be no problem provided you use same size and same type suitable for your application.

Yes, you can. We offer you vast varieties of bicycle tyres for different applications, with unique features. Our tyres are specially designed to have better performance in both wet and dry conditions and also when cornering. Same way our good quality assured rubber compound will perform through out all the seasons giving high mileage.

The tyre tread pattern is especially designed with grooves so as to allow water to be removed from the surface ensuring a better grip.

It depends on the tyre size range and tyre type.

For bicycle tyres (riding) you do not have to worry about speed range anymore. Our tyres can be safely used at maximum speeds normally attained.

Yes.

Rolling resistance depends on the tyre tread pattern and properties of rubber compound used. Generally our tyres are engineered to have the lowest possible rolling resistance.

DSI tyres may be more expensive compared to competitor tyres but considering overall assurance of technological properties, safety, durability, and aesthetics DSI tyres give all value for your money. Remember DSI tyre quality is assured to ISO 9001:2000 by DNV Netherlands for design, development, manufacture and sale of pneumatic tyres and tubes.

Motorcycle tyres have to be repaired within the limits of British Standard BS159F. Unfortunately, this does not allow repairs on tyres with a Z speed rating or above. Most of todays sportsbikes of 600cc upwards are all fitted with Z or W rated tyres, therefore, these cannot be repaired within the British Standards. A temporary repair can be carried out to get you home or to a local garage, but the tyre would have to be replaced, the use of sealants is not recommended by tyre manufacturers and their use voids any warranty on the tyre.

For both quality and price its DSI tyres and tubes.

Normally on the tyre wall tyre size may appear in all following forms or at least one.

Example :- consider a 700x35 tyre.

• E.T.R.T.O. size marking :- 37-622 (37- section width in mm, 622-bead or rim diameter in mm)
• English size marking :- 28 x 1 5/8 x 1 3/8 (28 - outside diameter in inches, 1 5/8 - section height in inches, 1 3/8 - section width in inches)
• German size marking :- 28 x 1 3/8 x 1 5/8 (28 - outside diameter in inches, 1 3/8 - section width in inches, 1 5/8 - section height in inches)
• French size marking :- 700 x 35C (700 - outside diameter in mm, 35C section width code)

Yes. The speed rating of a tyre is in relation to the performance of the motorcycle, therefore the correct rating has to be fitted in accordance with the motorcycle manufacturer's recommendation. Failure to do so could and probably would void any warranty or insurance claim.

Most tyres are made for either purely front or purely rear use. However some manufacturers produce tyres to fit either front or rear, but these have directional arrows on the sidewall for front or rear use. If a tyre is made for front use only, then you cannot put it on the rear and visa versa for rear use.

Yes. When new tyres are fitted they must be run in for approx. 100 miles with no excessive accelaration or braking, they should then be checked for correct seating on the rim and the tyre pressures checked. New tyres are slippy. Ignore this at your peril. Unfortunately we have had customers in the past who have ignored this advice and have fallen off their bike within five yards of our workshop entrance. You have been warned!!!

It is not a good idea, unless it is recommended by the motorcycle manufacturer, or you have changed the wheels. Fitting a wider tyre on the same rim often deforms the natural profile of the tyre and can therefore cause adverse handling problems. Also, a larger tyre on the rear of a bike can slow the steering down.

Always replace the rubber snap in valve for deterioration and if in doubt then replace it, always using the correct type and with an air tight metal valve cap.

Yes. Although tyres are made to very fine tolerances, there is nearly always an imbalance between the new tyre and the rim. An unbalanced wheel can cause irregular wear and vibration.

As a habit if you can check it every morning.

It won't make any problem

The tyre tread pattern is especially designed with grooves so as to allow water to be removed from the surface ensuring a better grip.

Rolling resistance depends on the tyre tread pattern and properties of rubber compound used. Generally our tyres are engineered to have the lowest possible rolling resistance.