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Old 06-16-2012, 10:36 PM   #9
cooljess76
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The reason they need to be shimmed is because the e30 halfshafts have larger diameter ABS tone rings. The teeth on the tone rings pass by the ABS sensors which are magnetic and generate a pulse. It works exactly the same way the speed and cam sensors work. If you don't shim the ABS sensors, the ABS tone rings will rub and destroy the sensors. All you need is a washer with a 5/8" hole to raise the sensors about 1/8th of an inch.

Last edited by cooljess76; 06-16-2012 at 11:05 PM.
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