Rims / Tires; Dealing With Punctures - Stromer ST2 Operating Manual

Rims / Tires

Rims are subject to a great deal of strain
and are vital to your safety on the bike. They wear
during riding. Do not ride with a rim once you can
see damage. Have them checked by a Stromer
dealer and replaced, as required. Wear can weak-
en rims and lead to falls and serious accidents.
You should also regularly check your pede-
lec's tires. The minimum and maximum permitted
tire pressure is printed on the side of the tires.
Please adhere to these levels, otherwise the tires
could slip off the rims or explode!
Tires are wear parts. You should therefore
regularly check the pressure, tread and condition
of your tires. Not every tire is designed for every
type of use.
The tires of an S-pedelec may only be exchanged
for authorized products that were approved by the
manufacturer. Please take note of the correct size
and the ECE quality test marker. It is essential to get
advice from a Stromer dealer when selecting tires.
All tires used with a Stromer must have an E-
permit for fast e-bikes according to ECE R75. For
example: E4 75R 0007911
The following tire dimensions are permitted for
the Stromer:
Customs designation ETRTO size
26x1.75 47-559
26x2.00 50-559
26x2.10 53-559
26x2.10 54-559
26x2.15 55-559

Dealing with punctures

You need the following equipment to repair a tire
puncture:
• Plastic tire lever
• Allen key for quick-release axles
• Air pump
• Spare tube
The quick-release axle must first be removed with
an Allen key before the wheel can be removed.
Please obtain information from the operating
instructions of the component manufacturers,
which are available online.
Flat tire and removal of the running
wheels
The removal and mounting of the rear
wheels of the ST2 and ST1X differ slightly. Please
read each of the relevant sections.
Tire exchange works similarly to a normal bicycle
in the event of a flat tire. Please contact a Stromer
dealer when you are not sure how to change a tire.
Please remove the battery from the battery box
before performing any maintenance work. Never
separate or connect an electrical connection while
the battery is in the battery box. This prevents the
risk of an electrical shock and the risk of injury.
Front wheel
Release the quick-release axle with a 6 mm hex-
agonal spanner and pull out the quick-release
axle.
Rear wheel removal and mounting for
the Stromer ST2 and ST2s
• First switch the gear to the smallest sprocket
(highest gear) so that the rear derailleur is less
of an obstacle when removing the rear wheel.
• Release the quick-release axle with a 5 mm
hexagonal spanner and pull out the quick-re-
lease axle (1).