| Ok... With todays standards... I'm almost positive that more than we even think or.. have talked about in the forum goes on to test the product line and producers of such parts that consist of a BMW. One thing that cant exactly be replicated.. due to time and its lact of practicality.. is longevity of a part... and or probability that it might fail. For example... BMW cant test 100 cars with the same parts.. to see how many out of those cars' parts will fail. Its not pratical.. so every now and then you might get a bad egg out of the batch. And if it is a vital part that is the part that fails.. a part will cause others parts to not work at or near their intended operation.
Just my two cents
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1997 E36 M3 1990 E30 325i | 
