Triumph Street Twin Owner's Handbook Manual page 150

Specifications
Use the recommended tyres ONLY in the combinations given. Do not mix tyres from
different manufacturers or mix different specification tyres from the same
manufacturers as this may result in loss of motorcycle control and an accident.
Approved Tyres
A list of approved tyres specific to these models is available from your authorised
Triumph dealer, or on the Internet at www.triumph.co.uk.
Tyres
Tyre Sizes:
Front
Rear
Tyre Pressures (Cold):
Front
Rear
Electrical Equipment
Battery Type
Battery Rating
Alternator
Headlight
Tail/Brake Light
Directional Indicator
Lights
Frame
Rake
Trail
150
Warning
Street Scrambler
100/90‑19
150/70 R17
2.1 bar (30 lbs/in )
2
2.5 bar (36 lbs/in
2
Street Scrambler
YTX12‑BS
12 Volt, 10 Ah
25 Amps at 1,000 rpm
46.5 Amps at 3,000 rpm
12 Volt, 60/55 Watt,
H4 halogen
LED
12 Volt, 10 Watt
Street Scrambler
25.6°
109.6 mm (4.31 in)
)