Wheel alignment and tire replacement at dealer's?

[evolver]

Would you go to your dealer for a 4-wheel alignment and tire replacement (I'm putting Vredesteins on) or would you rather go to your mechanic who is not necessarily BMW-certified but probably worked on quite a few of them?

I'm trying to decide of the cost difference is worth the "risk". I don't think there is any actual risk involved. This is more of a figure of speech. I think it is a human factor any way you look at it. Dealer's mechanic may make a mistake just like a 3-rd party mechanic and I will be chewing through the tires at much hire pace than I really want...

Please share your thoughts.