3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
what exactly does a limited slip do I hear two different things from people one is that its like posi track and the other is that its similier to traction control and what does the ratios matter and how do they affect it
Limited slip distributes power nearly evenly to both rear tires. This prevents the tire with the least traction from spinning while the other does nothing, as with the more common open differential. Posi traction is AFAIK more like a fully locked differential which is a more positive way of doing the same thing. The ratios are a separate issue which determine final drive gearing, meaning that it sets up the engine revs at a given speed.
thanks that really clears up my confusion do all bmws come stock with limited slip the guy I bought the car from said that it was put in about three years ago but he also said it had a fuel bump and an oil relief valve and I've never herd of either of these
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