What kind of gearboxes were offerred in the 2002 Turbo?
The standard 2002 Turbo transmission was a reinforced Getrag 232 four-speed manual with the following ratios: 3.76 (1), 2.09 (2), 1.32 (3), 1.00 (4). Two versions of the close-ratio Getrag 235/8 five-speed manual gearbox were optional. The first included the following ratios: 2.72 (1), 1.84 (2), 1.38 (3), 1.13 (4), 1.00 (5). A second, beefier version used the following ratios: 2.91 (1), 1.97 (2), 1.48 (3), 1.21 (4), 1.00 (5). A 3.36:1 final drive was standard with all gearboxes, though a shorter 3.45:1 could be ordered as an option. Both came mated to limited slip differentials (40% locking). There were also a number of BMW Motorsport differntials available (3.64, 3.91, 4.10, etc.), but these were intended for competition use only.
