It appears you're interested in specifications for the BMW R 16 series 1. This Custom / cruiser model is powered by a Twin, four-stroke engine with 736.00 ccm (44.91 cubic inches) of actual displacement before 6.5:1 compression. Fueling is metered via Carburettor. BMW triple 26mm allowing this machine to produce its 25.00 HP (18.2 kW) horsepower and torque. According to our records engine heat of the BMW R 16 series 1 is moderated by . You'll need to get familiar with the transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 26-3.5 and the rear is 26-3.5 . The entire package is supported by the frame, Pressed steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and rear brakes. The BMW R 16 series 1 was launched in 1930, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.