The last time the Dinan name graced the pages of Autoblog, Michael Harley was waxing poetic about the S3-R BMW 1M Coupe, a car that still stands in his ranks as one of the best cars he's ever driven.

Steve Dinan has been enhancing BMW models since 1979 ... but new bump stops are installed along with new springs. Overall, the car rides about a half-inch lower than stock to improve roll rate.

What if we told you Steve Dinan's latest BMW ... The additional options on this car include wheels, titanium exhaust, and a four-year, 50,000-mile warranty. The CarBahn BMW M4 Competition is ...