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Rider Height
<- Comparison guides

sport-touring / default rider 183 cm

BMW R 1250 RS vs Ducati ST4S ergonomics

BMW R 1250 RS and Ducati ST4S 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 1250 RS

Modeled scoreProvisional
95Comfortable

All contacts reached

Ducati ST4S

Modeled scoreProvisional
95Comfortable

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 1250 RS lists a 820 mm seat; the Ducati ST4S 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 1250 RS and Ducati ST4S
SpecBMW R 1250 RSDucati ST4S
Seat height820 mm820 mm
Wheelbase1,514 mm1,430 mm
Wet weight243 kg-
Displacement1,254 cc996 cc

Posture metrics

Knee angle

BMW R 1250 RS
Sport (58.1 deg)
Ducati ST4S
Sport (57.8 deg)

Hip angle

BMW R 1250 RS
Neutral (89.3 deg)
Ducati ST4S
Neutral (90.9 deg)

Elbow angle

BMW R 1250 RS
Relaxed (143.3 deg)
Ducati ST4S
Relaxed (143.3 deg)

Torso lean

BMW R 1250 RS
Neutral (13.8 deg)
Ducati ST4S
Neutral (12.9 deg)