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bagger / default rider 183 cm

Suzuki Boulevard C109RT SE vs Yamaha Road Star Silverado ergonomics

Suzuki Boulevard C109RT SE and Yamaha Road Star Silverado 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.

Posture overlay

The default rider's modeled seated posture on each bike, solved from the same geometry as the score panels and overlaid on one ground line so seat height and reach differences are visible at a glance.

Try with my height

Modeled fit comparison

Suzuki Boulevard C109RT SE

Modeled scoreProvisional
92Comfortable

All contacts reached

Yamaha Road Star Silverado

Modeled scoreProvisional
92Comfortable

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 Suzuki Boulevard C109RT SE lists a 706 mm seat; the Yamaha Road Star Silverado lists 709 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 Suzuki Boulevard C109RT SE and Yamaha Road Star Silverado
SpecSuzuki Boulevard C109RT SEYamaha Road Star Silverado
Seat height706 mm709 mm
Wheelbase1,755 mm1,689 mm
Wet weight408 kg-
Displacement1,783 cc1,670 cc

Posture metrics

Knee angle

Suzuki Boulevard C109RT SE
Open (118.5 deg)
Yamaha Road Star Silverado
Open (113.6 deg)

Hip angle

Suzuki Boulevard C109RT SE
Sport (80.8 deg)
Yamaha Road Star Silverado
Sport (80.2 deg)

Elbow angle

Suzuki Boulevard C109RT SE
Relaxed (143.3 deg)
Yamaha Road Star Silverado
Relaxed (143.3 deg)

Torso lean

Suzuki Boulevard C109RT SE
Neutral (9.6 deg)
Yamaha Road Star Silverado
Neutral (8.7 deg)

Fit by rider height

Modeled ground contact by rider height, in 5 bands from 5'2" to 6'4" (158-193 cm).

Modeled foot contact for Suzuki Boulevard C109RT SE and Yamaha Road Star Silverado by rider height
Rider heightSuzuki Boulevard C109RT SEYamaha Road Star Silverado
158 cm / 5'2"Both feet flatBoth feet flat
167 cm / 5'6"Both feet flatBoth feet flat
176 cm / 5'9"Both feet flatBoth feet flat
184 cm / 6'0"Both feet flatBoth feet flat
193 cm / 6'4"Both feet flatBoth feet flat

Modeled from each bike's seat height and a typical inseam-to-height ratio only — not a flat-footing guarantee. Real ground contact still depends on seat shape, suspension sag, footwear, and your own proportions. Confirm on the motorcycle.

Verdict

Suzuki Boulevard C109RT SE and Yamaha Road Star Silverado are both bagger bikes, so the practical question is which of their real differences you'd actually feel. Suzuki Boulevard C109RT SE runs a 66 mm longer wheelbase than Yamaha Road Star Silverado, which typically trades some low-speed agility for extra stability at speed. None of that adds up to a clear overall winner in the modeled posture score, so the individual differences above are the more useful comparison than the headline number. Treat every figure here as a planning estimate: seat width, suspension sag, footwear, and your own proportions can shift the real feel more than a few millimetres or degrees on paper. Load your height and inseam into the simulator, then sit on both before you decide.

Kit out either bike

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