Rear brakes were disc only, all 325 models 318iS and M3. ABS is standard installed only at the 325e, 325iS and M3. Optional attended the later editions models 320i, 325i and 333i. Some older models (325, M3) are equipped with a antiprobuksovočnoj system (with limited slip differential slippage) with a coefficient of 0.25. To check the number of such differential ends the letter ' Z '.