[audioholic]

Originally Posted by trail_lover

However, I've never heard the screeching of wheels during sudden braking on tarmac in all the ABS models I owned. But in many instances I've had the wheels lock and slip on gravel or roads with lot of stones.

How do we check if ABS is really working or not in an automobile and if the system is efficacious enough? Any easy tests to find out? If Team-BHPians can show me information that could be understand better I would be very grateful. Thank you

If you face this on loose surfaces only, then it is the normal behaviour of the ABS. However if you face it more often than you expect, ie even with mild braking mostly the tyres are over inflated or the tread pattern is not so suitable for loose surfaces (which could be obvious due to the nature of the car). As a start check tyre pressure. I had this issue in my Celerio with the stock MRF tyres but after switching to continental this became much better.