I have one 10 years only put 40k miles on it. E46. Still haven’t sold it even though I got an x3 m40i. I will keep the x3 5-7 years since the repairs seem like a nightmare. The e46 was easy to work on. I’ll probably sell it because it irritates my wife. But it’s psychological. We’ve been thru a lot.

If you can keep track of your keys you can keep track of a wheel lock it’s not rocket science

It’s a dealer installed option but a smart move. Just look at your lug bolts and see if one isn’t a hex head. If you don’t you should probably get a set. Be careful ordering online though bmw has changed bolt sizes and sells a few varieties of these.

Yeah I have gotten a replacement from my dealer basically the next day by sending a photo. Sounds like OPs dealer is a bit of an lazy ass.