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| Bicycle Tyres |
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| My tyres are very old, how should I
replace them? |
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| Please visit the nearest DSI bicycle tyre and tube sales shop. |
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| From where I can buy quality tyres at a
price suting my purse? |
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| For both quality and price its DSI tyres and tubes. |
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| What do those numbers on my tyre mean? |
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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)
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| What is the meaning of tube-type tyre
& tubeless tyre? |
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- 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.
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| Can I mix different type of tyres? |
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| No, you should not. |
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| Can I use oversize tyres? |
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| It depends on measurements (space) between mud guard & tyre outer
surface, space between fork arms, width of the rim etc. |
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| How do I read my tyre? |
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| Same as Question 03. |
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| How do I choose my tyre? |
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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.
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| Why do tyres lose their pressure? |
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| 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. |
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| When should I check my tyre inflation
pressure? |
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| As a habit if you can check it every morning. |
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| Is it possible to fit a tube into a
tubeless tyre? |
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| It won't make any problem. |
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| Is there a service life for tyres? |
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| 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. |
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| Can I use different brands of tyres? |
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| Yes, seems to be no problem provided you use same size and same type
suitable for your application. |
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| Can I buy tyres from this website? |
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| 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. |
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| How do tyres perform on watery surfaces? |
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The tyre tread pattern is especially designed with grooves so as to
allow water to be
removed from the surface ensuring a better grip. |
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| What is the average weight of a tyre? |
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| It depends on the tyre size range and tyre type. |
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| Is there any speed limit for my tyre? |
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| 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. |
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| Do you make tyres to fit inch size &
ETRTO size? |
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| Yes. |
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| How is the rolling resistance of your
tyre? |
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| 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. |
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| How do you rate DSI bicycle tyres with
competitor tyres? |
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| 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. |
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| Motorcyle Tyres |
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| Can motorcycle tyres be repaired? |
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| 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. |
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| From where I can buy quality tyres to
suit my purse? |
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| For both quality and price its DSI tyres and tubes. |
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| Back to Top |
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|
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| What do those numbers on my tyre
mean? |
|
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)
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| Are speed ratings important? |
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| 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. |
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| Can a front tyre be used on the rear? |
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| 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. |
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| Do new tyres need to be run in? |
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| 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!!! |
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| Can I fit a wider tyre on my
motorcycle? |
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| 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. |
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| Do I need to replace the valve when I
change the tube? |
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| 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. |
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| Should my new tyres be balanced? |
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| 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. |
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| When should I check my tyres
inflation pressure? |
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| As a habit if you can check it every morning. |
|
| Back to Top |
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| Is it possible to fit a tube into a
tubeless tyre? |
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| It won't make any problem. |
|
| Back to Top |
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|
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| How do tyres perform on watery
surfaces? |
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| The tyre tread pattern is especially designed with grooves so as to
allow water to be removed from the surface ensuring a better grip. |
|
| Back to Top |
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| How is the rolling resistance? |
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| 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. |
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| Back to Top |