Specifications

Wheels Size: Front Rear
K75, K75 C, K75 T MTH 2.50 x 18E MTH 2.75 x 18E
K75 S, all 100 models MTH 2.50 x 18E MTH 2.75 x 17E
Rim maximum runout - radial and axial 0.50 mm (0.0197 in)
Brake Type: Front Rear
K75, K75 C, K75 T Twin hydraulic discs SLS drum - rod operated
K75 S, all 100 models Twin hydraulic discs Single hydraulic disc
Disc brakes - front and rear
Disc diameter 285 mm (11.22 in)
Disc thickness: Standard 4.300 - 4.400 mm (0.1693 - 0.1732 in)
  Service limit 3.556 mm (0.1400 in)
Disc maximum warpage 0.200 mm (0.0079 in)
Brake pad friction material thickness: Standard - approximate 5.0 mm (0.1969 in)
  Service limit 1.5 mm (0.0591 in)
Master cylinder piston OD 13 mm (0.5118 in)
Caliper piston OD 38 mm (1.4961 in)
Recommended brake fluid DOT 4 - eg ATE 'SL'
Drum brake
Drum ID: Standard 200.00 mm (7.8740 in)
Maximum 201.16 mm (7.9197 in)
Brake shoe friction material minimum thickness 1.5 mm (0.0591 in)
Tyres
Note: check with BMW importer/dealer for currently approved makes and types of tyre
Size Front Rear
K75, K75 C, K75 T 100/90 x 18 56 H, also 100/90 x 18 H 120/90 x 18 65 H, also 120/90 x 18 H
K75 S, all 100 models 100/90 x 18 V, also 100/90 x 18 56 V 130/90 x 17 V, also 130/90 x 17 68 V
Manufacturer's recommended minimum tread depth - at centre of tread:
Front tyre 2 mm (0.08 in)
Rear tyre - up to 80 mph (130 km/h) 2 mm (0.08 in)
Rear tyre - above 80 mph (130 km/h) 3 mm (0.12 in)
Tyre pressures - tyres cold Front Rear
75 models
Solo 29 psi (2.00 bar) 36 psi (2.50 bar)
Pillion 34 psi (2.30 bar) 42 psi (2.90 bar)
100 models
Solo 33 psi (2.25 bar) 36 psi (2.50 bar)
Pillion - up to 112 mph (180 km/h) 33 psi (2.25 bar) 39 psi (2.70 bar)
Pillion - above 112 mph (180 km/h) 39 psi (2.70 bar) 42 psi (2.90 bar)
Note: information is correct at time of writing - check with machine's handbook or label on rear mudguard for updated information. Pressures apply to original equipment tyres only- check with BMW dealer/importer or tyre manufacturer or agent if non-standard tyres are fitted- pressures may vary.
Torque wrench settings 75 models 100 models
Component Nm lbf ft Nm lbf ft
Front wheel spindle retaining collar Allen screw 33 ± 4 24 ± 3 33 ± 2,4 24 ± 2
Front wheel spindle clamp bolts 14 ± 2 10 ± 1,5 14 ± 1 10 ± 0,5
Rear wheel mounting bolts 105 ± 4 77,5 ± 3 105 77,5
Front brake disc mountings 29 21,5 29 21,5
Rear brake disc mounting screws 21 ± 2 15,5 ± 1,5 21,4 16
Brake caliper mounting bolts 32 ± 2 23,5 ± 1,5 32 ± 2 23,5 ± 1,5
Brake pipe retaining plastic nut at steering head - early 75 models, all 100 models 10 ± 1 7,5 ± 0,5 10 7,5
All brake hose or pipe unions 7 ± 1 5 ± 0,5 8 6
Brake caliper bleed nipples 7 ± 1 5 ± 0,5 N/Av N/Av

 

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