Claim: With a top speed of 93 mph, the BMW R69 has a four stroke engine and brake drums that weigh more than its wheelbase.
Evidence: (R69 specifications shown in parentheses when different from the R69S) R69S Specifications. Wheel Base — 1415 mm (55.7 in); with original sidecar 1450 mm (57.1 in) Brakes, Rear — Drum brake 200 mm (7.9 in) diameter simplex full hub Brakes, Front — Drum brake 200 mm (7.9 in) diameter duplex full hub