Unlike the 645i or the 650i is the BMW 630 was already built in the 1976-1989 first-generation 6-series. Was then called the model 630 CS and 185 bhp. The current BMW 630i is the first BMW the new six-cylinder engine with magnesium 258 horsepower under the hood. The chassis of the BMW 630i is made entirely of aluminum as the other models in the 6 Series for weight optimization. Unlike the eight-cylinder, available as the 630i coupe and convertible rolled on 17-inch aluminum wheels. Acceleration from 0-100 km / h in 6.5 seconds and the Convertible Coupe 6.9 s (factory data), the top speed of the BMW 630i is electronically limited to 250 km / hr.