What kind of gearbox does the E30 M3 have?
Two different Getrag 265 five-speed manual gearboxes were used in the E30 M3; a close-ratio version with a direct top gear and a dogleg shift pattern for European-spec cars, and an overdrive unit (shared with the E30 325i) with a standard H pattern for North America and Japan. The ratios are as follows: European market: 3.72 (1), 2.40 (2), 1.77 (3), 1.26 (4), 1.00 (5) North American + Japanese markets: 3.83 (1), 2.20 (2), 1.40 (3), 1.00 (4), 0.81 (5) E30 M3s equipped with the overdrive gearbox have a shorter 4.10:1 final drive (versus 3.25:1) to help offset the taller ratios. Both gearboxes are mated to limited slip rear differentials with a maximum locking of 25 percent.
