Long before BMW’s M GmbH produced its own high-performance variants, boutique tuner Alpina engineered and sold ultra-powerful derivatives of the Bavarians’ standard models. Hidden beneath the skin of innocent-looking 3-, 5-, and 6-series models, BMW Alpina packed modified engines whose power rivaled contemporary sports cars. As BMW began to push its M cars, Alpina altered [...]

The rest of the story...
CarandDriver.com