Skip to content
Rider Height
<- Comparison guides

sport / default rider 183 cm

Aprilia RS 660 vs BMW R 90 S ergonomics

Aprilia RS 660 and BMW R 90 S land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

Aprilia RS 660

90Comfortable

All contacts reached

BMW R 90 S

90Comfortable

All contacts reached

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

Geometry snapshot

Geometry comparison for Aprilia RS 660 and BMW R 90 S
SpecAprilia RS 660BMW R 90 S
Seat height820 mm820 mm
Wheelbase1,370 mm1,465 mm
Wet weight183 kg215 kg
Displacement659 cc898 cc

Posture metrics

Knee angle

Aprilia RS 660
Sport (65.5 deg)
BMW R 90 S
Sport (60.7 deg)

Hip angle

Aprilia RS 660
Neutral (106.6 deg)
BMW R 90 S
Neutral (99.5 deg)

Elbow angle

Aprilia RS 660
Relaxed (143.3 deg)
BMW R 90 S
Relaxed (143.3 deg)

Torso lean

Aprilia RS 660
Forward (29.1 deg)
BMW R 90 S
Forward (25.8 deg)