drive. All four wheels are suspended independently. The front wheels have MacPherson struts with coil springs, hydraulic shock absorbers, and transverse control arms. The rear axle has semi-trailing arms with coil springs, and hydraulic shock absorbers. Models with a power output of or more have an additional sway bar on the rear axle. All models except the M535i have 14-inch steel alloy wheels with a wheel-width of either 5.5 or 6 inches. Therefore, the tyre size is either 175 mm or 195 mm. All models use worm and sector steering, which is power assisted from the 528 onwards. The braking system is a dual-circuit system with front disc brakes; on the rear wheels, 518/520/i models were fitted with drum brakes, all models from the 525 onwards have disc brakes. Drivetrain The 4-speed manual transmission options consisted of: Getrag 242 4-speed (for M10/M20/M30 engine models) Getrag 262 4-speed (M30 engine) ZF S4-18/3 4-speed (M30 engine) The 5-speed manual transmission options consisted of: Getrag 235 5-speed (M10 engine) Getrag 245 5-speed (M10/M20 engines) Getrag 265 5-speed (M30 engine) The automatic transmission options- all 3-speed transmissions- consisted of: ZF 3HP12 (M10 engine) ZF 3HP20 (M30 engine) ZF 3HP22 (M20/M30 engines) BorgWarner BW65 (M30 engine) Special models On the Belgian and Greek markets, there was a BMW 518 Deluxe version. One thousand of these cars were sold in 1979-1980. This was a BMW 518 equipped as the 528i top model with additional luxury items such as headrests on the back seats. It was rumored that this special version was produced for the Iranian government, as a car for top officials under the shah’s rule. Due to the Iranian revolution these cars were never delivered. Instead, they have been sold as a special version in Belgium and Greece. The Portuguese market also received nearly 700 CKD units due to the local regulations that demanded a certain amount of vehicles sold in Portugal to be locally assembled. For the Swedish market the complete BMW 5 range was not offered, due to local emissions regulations. For the early E12 the models BMW 518, BMW 520, BMW 520i, and BMW 525 were offered - with the BMW 528 missing. The series 2 range of was reduced to three models: BMW 518i, BMW 520i and BMW 528i. The 528i became available as a result of Switzerland having adopted the same emissions rules, making it worthwhile to develop such a