OK, now I know better. There was another post where it said pressure should be 3.5 PSI (probably was a typo and I took it for granted). Mine was under 10 PSI for sure. Would very between 4-6 and 10, but never more than that. So, if normal one is 35/50 - that is not the case with me. And thanks for the tip on pricing - I am using one of the on-line shops and they sell it for $280+. You are right, on Ebay I can get one for a bit over 100. Will try that next.

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BMW X5 2001 3.0