The E30 M3 differed from the rest of the E30 line-up in many ways. The M3 was equipped with a revised stiffer and more aerodynamic body shell as well as "box flared" wheel-arches to accommodate a wider track with wider and taller wheels and tires. The only body panels the standard model 3-series and the M3 shared were the hood and sunroof. It also had three times the caster angle of any other E30. The M3 shared larger wheel bearings and front brake calipers with the E28 5-Series. It also had a Getrag 265/5 5 speed gearbox, and rear differential with different final-drive ratio and 25% lockup.
