What changed during the production of North American-spec M5s?
Though the E34 M5 was introduced in North America as a 1991 model, production actually began in December of 1989. Cars produced before September of 1990 were therefore built to 1990 specification. Thus. the North American-spec E34 M5 did not actually adopt true 1991 specifications until approximately nine months after production began. At that time, the following items were modified: -Ellipsoid headlights and foglights replaced by “free form” versions -Radio head unit updated -Tilt steering wheel added -Light Silvergray Nappa leather upholstery (0438) offered in place of Silvergrey Nappa leather (0227) -Light Silvergray extended Nappa leather upholstery (0417) offered in place of Silvergrey extended Nappa (0319) (Canada only) -Calypso Red metallic (252) paint available (from 3/91 production) -Mauritius Blue metallic (287) paint available (from 3/91 production) For the 1992 model year (starting 7/91 production) the following changes were introduced: -Rear axle ratio changed from 3.91:1
