1990 BMW 3 Series Sedan Second generation series 2 LCI Brake System Specifications

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Condition Value
Front axle brake disc diameter 10.24 in
expand_moreFront axle brake disc thickness
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.87 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.87 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.87 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.87 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.87 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.87 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.87 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.87 in
expand_moreAll other modifications
Internally ventilated brake discs 0.87 in
Otherwise 0.47 in
expand_moreFront axle brake disc minimal thickness
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.8 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.8 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.8 in
325 i X with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.8) 0.8 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.8 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.8 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.8 in
325 i with gasoline straight-6 2.5 L 168 HP engine (1986.12–1991.6) 0.8 in
expand_moreAll other modifications
Internally ventilated brake discs 0.8 in
Otherwise 0.44 in
expand_moreFront axle brake lining minimal thickness
Without backing plate 0.079 in
Maximum rear axle brake drum adjustment dimension 9.04 in
Rear axle brake disc diameter 10.16 in
Rear axle brake disc thickness 0.39 in
Rear axle minimal brake disc thickness 0.33 in
expand_moreRear axle brake drum diameter
All BMW gasoline straight-4 1.6 L M10 B16 engines 8.98 in
All BMW diesel straight-6 2.4 L M21 D24 (246DA) engines 8.98 in
All BMW diesel straight-6 2.4 L M21 D24 (246TB) engines 8.98 in
All other modifications 9 in
expand_moreRear axle minimal brake lining thickness
expand_more315 with gasoline straight-4 1.6 L 74 HP engine (1982.9–1991.12)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_more316 (Ecotronic) with gasoline straight-4 1.8 L 89 HP engine (1983.9–1990.12)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_more316 i with gasoline straight-4 1.6 L 101 HP engine (1988.7–1991.6)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_more316 i with gasoline straight-4 1.6 L 98 HP engine (1987.9–1991.6)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_more320 i with gasoline straight-6 2.0 L 127 HP engine (1985.12–1991.6)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_more320 i with gasoline straight-6 2.0 L 148 HP engine (1985.12–1990.6)
expand_moreWith disc brake
Without backing plate 0.079 in
expand_moreWith drum brake
Without backing plate 0.059 in
expand_moreAll other modifications
Without backing plate 0.079 in
Wheel brake cylinder diameter 0.87 in

Brake system is the most important system in your 1990 3 Series Sedan. Check pads and disks from time to time and replace them as they worn below minimum thickness allowed by BMW.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1990 BMW 3 Series Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.

Table of Contents

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow BMW 3 Series Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1990 BMW 3 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

1990 BMW 3 Series Sedan generations

In 1990 BMW offered 2 generations of the 3 Series Sedan. Brake system specifications may vary in different generations. Be sure that you are looking at the rigt modification.

Third generation

E36

BMW 3 Series Sedan Second generation series 2 LCI model years

Units:
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