BBC Autos Experiences the Dinan Difference in the 550xi S2
Kahn Media client Dinan Engineering has been touring its all-wheel-drive BMW sedan around the states and recently had a chance to give BBC Autos some seat time in this 508 horsepower rocket ship saloon. This Morgan Hill based tuning company has been building go-fast Bimmers for 34 years backed by a factory matching warranty and…