This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1973 BMW R75/5 is a long wheelbase variant that was previously owned by a BMW-specific machinist and purchased by the seller eight years ago. Approximately 500 of the 5k indicated miles have been added since. Power is provided by an air-cooled 749cc boxer twin paired with a 4-speed transmission, and recent work included a carburetor cleaning and replacement of the battery. This R75/5 is now offered with recent service records and a clean Wisconsin title in the seller’s name.
Finished in black with white pinstriping, the bike features a chrome embellished “toaster” tank and side covers. The seller notes a minor blemish on the fuel tank, and scratches are visible on the front fender. Paint meter readings have been provided in the gallery below.
Late production 1973 models featured a longer wheelbase which was created by adding 2.5 inches to the swingarm. This added length aided in high speed stability and enabled a larger battery for the electric starter. Weinmann alloy rims wear Continental Conti Blitz tires.
The headlight shell contains a combination 120-mph speedometer and an 8k-rpm tachometer. The tapered plastic key is shown in the gallery. 5k miles are indicated on the odometer, 500 of which have been added by the seller in eight years of ownership.
The 749cc air-cooled boxer twin produced 50 horsepower when new and features dual 32mm Bing carburetors. Power is transferred through a 4-speed transmission with a shaft drive, and both kick and electric starters are fitted. Within the last month the seller replaced the battery and cleaned the carburetors. An aftermarket fuel filter is fitted, and the engine case shows minor oxidation. Service records are available for the 8 years of the seller’s ownership. A brief walk around and ride away video can be seen below.