Yamaha SR 400 (1998-03) vs BMW R 1200RT (2006) vs Yamaha XVZ 1200TK Venture (1983) vs BMW R 1200RT LC (2015) vs Yamaha XS 650 Midnight Special (1981) vs Yamaha XJ 550 (1981)

Comparison technical specifications

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Make:	Yamaha	BMW	Yamaha	BMW	Yamaha	Yamaha
Model:	SR 400	R 1200RT	XVZ 1200TK Venture	R 1200RT LC	XS 650 Midnight Special	XJ 550
Years:	1998-03	2006	1983	2015	1981	1981
Engine:	Four stroke, single cylinder, SOHC, 2 valves per cylinder.	Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder	Four stroke, 72° V-4 cylinder, DOHC, 4 valves per cylinder	Four stroke, two cylinder horizontally opposed Boxer, DOHC, 4 valves per cylinder	Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.	Four stroke, transverse four cylinder. DOHC, 2 valves per cylinder.
Capacity:	399 cc / 24.3 cu-in	1170 cc / 71.4 cu in	1198 cc / 73.1 cu-in	1170, 71.4 co in	653 cc / 39.8 cu in	528 cc / 32.2 cu-in
Bore x Stroke:	87 х 67.2 mm	101 x 73 mm	76 х 66 mm	101 x 73 mm	75 x 74 mm	57 X 51.8 mm
Compression Ratio:	8.5:1	12.0:1	10.5:1	12.5:1	8.5:1	9.5:1
Cooling System:	Air cooled	Air/Oil cooled	Liquid cooled	Liquid cooled	Air cooled	Air cooled
Induction:	BSR33 carburetor	BMW engine management, BMS-K	4x Mikuni carburetors	Throttle valve mm 52 Carburetion BMS-X Emission control Closed-loop 3-way catalytic converter	2 x Mikuni BS34SU carburetors	4x 28mm Mikuni carburetors
Ignition:	CDI	Digital engine management	Electronic	Digital engine management	Battery, induction coil	Battery powered inductive
Starting:	Kick	Electric	Electric	Electric	Electric and kick	Electric
Max Power:	27 hp / 17.1 KW @ 7000 rpm	81kW / 110 hp @ 7500 rpm	97 hp @ 7000 rpm	92 kW / 125 hp @ 7750 rpm	39.5 kW / 53 hp @ 7200 rpm	37 kW / 50 PS @ 9000 rpm
Max Torque:	27.4 Nm / 6.3 kgf-m @ 6500 rpm	115 Nm / 11.7 kgf-m / 85 lb-ft @ 6000 rpm	10.4 kgf-m @ 5000 rpm	125 Nm / 12.7 kgf-m / 92 lb-ft @ 6500 rpm	54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 5500 rpm	41.9 Nm / 4,3 m-kg @ 7500 rpm
Transmission:	5 Speed	6 Speed	5 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Chain	System Enclosed driveshaft with two universal joints	Shaft	Shaft	Chain	Chain
Front Suspension:	Telescopic fork	BMW Motorrad Telelever, stanchion diameter 35mm, central spring strut, rebound damping electronically adjustable with standard ESA	Center-axle, air-adjustable fork with 40mm tubes, anti-dive valving	BMW Telelever	Telescopic forks	Telescopic coil spring forks
Rear Suspension:	Dual shocks	Die-cast aluminium single-sided swinging arm with BMW Motorrad EVO-Paralever, spring preload hydraulically adjustable to continuously variable levels by means of electronically adjustable ESA, rebound damping with standard ESA	Single air-adjustable shock absorber, adjustable for rebound dampening, producing	BMW EVO Paralever	Dual shock absorbers	Swinging arm with dual dampers adjustable for preload
Front Brakes:	Single disc	2 x 320mm Discs, 4 piston callipers	2x 282mm discs	2 x 320mm Discs, 4 piston callipers	Twin hydraulic discs, 267 mm	2x 267mm discs
Rear Brakes:	Drum	Single 265mm disc, 2 piston caliper	Single 282mm disc	Single 276mm disc, 2 piston caliper	Single hydraulic disc, 267 mm	182mm Drum
Front Tyre:	3.50-19	120/70 ZR17	120/90-18	120/70 ZR17	3.50S-19	3.25-19
Rear Tyre:	4.00-16	180/60 ZR17	140/90-18	180/60 ZR17	130/90S-16	110/ 90-16
Fuel Capacity:	12 Litres / 3.2 gal	27 Liters / 7.1 US gal	20 Litres / 5.2 US gal	25 Litres / 6.6 US gal	11.5 Litres / 3.0 US gal	15 liters / 3.9 US gal