Changing front wheel bearings - 1150

I've got a spare set of wheels with nice new shiny TKC80's on but the wheel bearings are iffy - before I get stuck in - is there anything I ought to know first, is there a knack/trick/method to make things easier?

Anyone know the bearing numbers before I go to my local bearing shop for them (no BMW dealers in S Wales)?

Not done 1150 brg's but done plenty of others.... I should think you will need a blow lamp/hot air gun... the freezer/ or freeze spray and a selection of drifts.... Also "this somtimes works" get your self a couple of ground anchor bolts the type that flare out as you wind them down the thread, I,ve used them several times to ease out the old brgs.
And if you Google "Simply Bearings " mail order they can match most brgs even OEM. and cheap.