KTM 990 - Manual (Page 60)

MAINTENANCE WORK ON CHASSIS AND ENGINE
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59
TIRES – AIR PRESSURE front rear
Road,
driver only
2.4 bar
(34psi)
2.6 bar
(37psi)
Road, with
passenger
2.4 bar
(34psi)
2.8 bar
(40psi)
maximum
payload
2.4 bar
(34psi)
2.8 bar
(40psi)
Tires, air pressure
Tire type, tire condition, and how much air pressure the tires have in them affect the way
your motorcycle rides, and they must therefore be checked whenever you’re getting ready to
go anywhere on your motorcycle.
– Only use tires authorized by KTM to guarantee driving safety and maximum handling per-
formance. Other tires can have an adverse effect on the vehicle handling (e.g. „wobbling“
at high speeds) and the stopping distance.
– Do not exceed the respective maximum speed for tires designed with a speed index of
less than „V“ (240 kph, 150 miles/h). A sticker showing the maximum speed must be
affixed to the motorcycle within the driver's field of vision.
– Tire type and size can be found in the technical specifications and in the homologation
certificate.
– Tire condition has to be checked every time you want to ride your motorcycle. Before
leaving check for punctures and nails or other sharp objects that might have become
embedded in the tire.
– Refer to the specific regulations in your country for minimum tire tread requirements.
We recommend replacing tires at the latest when the tread is down to 2 mm (0.08 in).
– Tire pressure should be checked regularly on a “cold” tire. Adapt the air pressure to the
motorcycle's total weight. Proper pressure ensures optimum driving comfort and extends
the life of your tires.
– Do not mount tires which have not been approved by KTM. Other tires could have adverse
effects on the way your motorcycle rides.
– Models with ABS (antilock brake system): do not mount wheels with a different rim diam-
eter. The ABS function can no longer be guaranteed.
– Models with ABS: The ABS is designed to be used with the tires authorized by KTM and
works best with these tires. The ABS function cannot be guaranteed if other tires are used.
– Use tires of the same brand and type for the front and rear wheels.
– For your own safety replace damaged tires immediately.
– Worn tires can have a negative effect on how your motorcycle performs, especially on
wet surfaces.
– If air pressure is too low, abnormal wear and overheating of the tire can result.