In 1978, based on the success of the R 100 RS, BMW Motorrad released another version of the high torque 1000cc boxer engine with a full fairing. The bike complemented the BMW range and acted as a top model further developed for wind and weather protection.
The RT model provided a more upright seating position than the RS model due to the higher and wider upper fairing part, a higher and wider windshield, and higher handlebars. For the first time, the windshield incline was manually adjustable. Another feature consisted of two separate nozzles, which on the hot summer days, the driver was able to direct fresh air behind the fairing.
Even with a full touring package, gear, and passenger, the 1978 BMW R 100 RT was an agile motorcycle.
The big touring machine was powered by a 980cc flat-twin engine with a power output of 70 hp at 7,250 rpm and 76 Nm (56 lb-ft) of torque with a peak at 6,000 rpm. Combined with a five-speed manual transmission and a curb weight of 234 kg (516 lbs), the bike registered a top speed of 190 kph (118 mph).
From the factory, the bike came with standard features such as die-cast aluminum wheels, a chromed dual exhaust, a dual seat, a small luggage rack, pillion grab rails, a large round headlamp, and a center stand.