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Rider Height
<- Comparison guides

bagger / default rider 183 cm

BMW R 18 B vs BMW R 18 Roctane ergonomics

BMW R 18 B and BMW R 18 Roctane land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

BMW R 18 B

92Comfortable

All contacts reached

BMW R 18 Roctane

92Comfortable

All contacts reached

The two bikes are close enough that posture preference matters more than the overall score.

Geometry snapshot

Geometry comparison for BMW R 18 B and BMW R 18 Roctane
SpecBMW R 18 BBMW R 18 Roctane
Seat height720 mm719 mm
Wheelbase1,695 mm1,720 mm
Wet weight398 kg374 kg
Displacement1,802 cc1,802 cc

Posture metrics

Knee angle

BMW R 18 B
Open (113.8 deg)
BMW R 18 Roctane
Open (115.6 deg)

Hip angle

BMW R 18 B
Sport (80.2 deg)
BMW R 18 Roctane
Sport (80.4 deg)

Elbow angle

BMW R 18 B
Relaxed (143.3 deg)
BMW R 18 Roctane
Relaxed (143.3 deg)

Torso lean

BMW R 18 B
Neutral (8.7 deg)
BMW R 18 Roctane
Neutral (9.1 deg)