Hi
I found the factory "spanner" very difficult to use, with the supplied hammer or even a bigger one. It kept slipping and you have to hold it on with one hand while whacking with the other, a recipe for bruises.
So I bought one of these from MWS wheels, and a Thor hammer with two nylon faces (recommended in a TR forum for releasing two-eared spinners):
http://www.mwsint.com/Shop/Details.asp?Id=KAS42It is brilliant, makes the job easy, looks very durable and is portable (unlike a breaker bar).
The movement of the car automatically tightens the nuts, there are several explanations of this on the web.
However you may not need to take the wheels off (or even jack the car) to grease the front suspension - try turning all the way to one side. In my case I had angled grease nipples fitted (for a few pounds) which makes grease gun access easier.
Nigel