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Rider Height
<- Comparison guides

sport / default rider 183 cm

BMW R 90 S vs Honda RC51 ergonomics

BMW R 90 S and Honda RC51 have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.

Modeled fit comparison

BMW R 90 S

Modeled scoreProvisional
90Comfortable

All contacts reached

Honda RC51

Modeled scoreProvisional
90Comfortable

All contacts reached

The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.

Rider fit: reaching the ground

The BMW R 90 S lists a 820 mm seat; the Honda RC51 lists 820 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.

Geometry snapshot

Geometry comparison for BMW R 90 S and Honda RC51
SpecBMW R 90 SHonda RC51
Seat height820 mm820 mm
Wheelbase1,465 mm1,410 mm
Wet weight215 kg-
Displacement898 cc999 cc

Posture metrics

Knee angle

BMW R 90 S
Sport (60.7 deg)
Honda RC51
Sport (60.7 deg)

Hip angle

BMW R 90 S
Neutral (99.5 deg)
Honda RC51
Neutral (99.5 deg)

Elbow angle

BMW R 90 S
Relaxed (143.3 deg)
Honda RC51
Relaxed (143.3 deg)

Torso lean

BMW R 90 S
Forward (25.8 deg)
Honda RC51
Forward (25.5 deg)