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Your CS is equipped with tyres sized 65 × 406. This means that the tyre is
65 mm wide when fully inflated and has an inner tyre diameter of 406 mil-
limetres. The other size is indicated in inches: 20 × 2.60".
Tyre pressure
Tyres must be inflated to the proper tyre pressure to provide an optimal
compromise between smooth running and riding comfort. Properly inflat-
ed tyres are also more resistant to punctures. An insufficiently inflated
tyre can result in a “snakebite” by pinching the inner tube, when it goes
over a sharp kerb.
Tyre pressure for your CS: 2.0–4.0 bar or 30–60 psi
The lower limit of the pressure specification means maximum comfort for
light riders and little cargo which is optimal for riding on rough surfaces.
As the pressure increases, rolling resistance on level ground is minimized,
while comfort decreases. Tyres inflated to maximum pressure are there-
fore best suited for heavy riders, heavy cargo and for riding on tarred
roads.
The tyre alone with the rim does not hold the air. To maintain the pressure
inside an inner tube is placed inside the tyre and filled through a valve.
Warning
Are the tyres in good condition and do they have sufficient pressure? A high-
er pressure gives a better riding stability and reduces the risk of a puncture.
The minimum and maximum pressure (in bar or psi) is indicated on the tyre
side.
