My e53 is at 177k miles as well! Seems like I'm a little behind your maintenance schedule too. I need to do this and the engine mounts still. But I need to do some work on my e36 first.

I bought the NT520 when i did the adaptation reset on my wife's X3. To be fair I haven't done it on my X5 since I havent changed the oil yet. But it does the reset and is a nice little tool to have if you own BMWs. I wish INPA would do this. But then again, i also need the newer version so I can read out F models.

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2000 e39 M5 Titanium on Black
2006 e53 M54 Titanium on Black
2007 e83 Black on Black Sport pkg
2004 Avalanche 2500 lifted 4.88 gears
1994 jacked up Jeep
1987 GMC lifted short bed on tons