If Bentley is free then I'd take it. IMHO, not worth $80-$100.

I agree that TIS is better. I can get TIS for $10 on ebay for the CD.
But I have fixed cars for 25 years, so all I need is torque values.

If you look at bimmerfest E39 DIYs and TIS, you will essentially have it all covered for E53.

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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT