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BMW R1200 GS Info and Accessories

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R1200GS
Picture by Philippe Roelant of Belgium
Stock tires in the US are Metzeler Tourance, an excellent choice for this bike.Stock tire sizes are 110/80 19 front and 150/70 17 rear. Optionally you can get wire spoke wheels with Continental TKC 80s, a better choice for off-road. Spoke wheels are stronger but about ¼ lbs front and 4 lbs. rear heavier than cast wheels. Even with the spoke wheels, you run tubeless tires.

For street use, your front tire should be at 37-40psi. Although the bike will feel just fine with 32psi in the front, modern radial tires will develop a strange wear pattern with low air pressures, particularly if you ride for long distances on hot days at freeway speeds.

For best handling off-road, reduce your tire pressure to about 20-22 psi front, 22-25psi rear. If you do this, bring a small air pump to get the tires back up to 37-40 when you get back on the road. Reducing tire pressure for off-road makes a huge difference in the bike's stability.

Generic information on tires is here.

Alternatives include:

Avon Distanzia
Bridgestone BT020
Bridgestone Trailwing
Continental TKC 80
Dunlop D607
Metzeler Karoo
Metzeler Tourance
Metzeler ME880
Michelin Anakee
Michelin T66X
Pirelli MT90 S/T

Good deals on tires can be found at:

Specifications

Engine and transmission

Displacement: 1170 cc (71.39 cubic inches)
Engine type: Two cylinder boxer SOHC w/ counter balance shaft
Power: 98.00 HP @ 7000 RPM
Torque: 84.8 ft.lbs @ 5500
Compression: 10.0:1
Bore x stroke: 101.0 x 73.0 mm (4.0 x 2.9 inches)
Fuel system: Injection
Valves per cylinder:4
Cooling system: Oil & air
Gearbox: 5-speed
Final drive: Shaft drive
Top speed: 125 mph

Physical measures

Dry weight: 438.7 lbs
Seat height: 33.1 or 33.9 inches
Wheelbase: 64.6 inches
Overall length: 87 inches
Overall width: 36 inches
Overall height: 56.3 inches
Fuel capacity: 5.28 gallons including 1.06 gallon reserve

Chassis and dimensions

Frame type: Three-section composite frame consisting of front and rear section, load bearing engine.
Front suspension: BMW Motorrad Telelever; stanchion diameter 41 mm, central spring strut, spring pre-load 9-way adjustable
Front suspension travel:190 mm (7.5 inches)
Rear suspension: Die-cast aluminum single-sided swinging arm with BMW Motorrad Paralever; WAD strut (travel-related damping), spring pre-load hydraulically adjustable, rebound damping adjustable
Rear suspension travel: 200 mm (7.9 inches)
Front tire dimensions: 110/80-ZR19
Rear tire dimensions: 150/70-ZR17
Front brakes: Double disc, 305 mm (12.0 inches)
Rear brakes: Single disc, 265 mm (10.4 inches)