E61 4 wheel alignment problem
 

I have a 2008 E61 which is wearing rear tyres on the inside, I want to have the 4 wheel alignment done but I am having problems with the nearside rear camber adjusment which is seized solid. I can't heat the bolt as its through a rubber bush, I have drenched it in penetrating oil but so far its resisting that. If I break the adjuster bolt I will have to replace the complete arm which is around £180.00. anybody out there got any ideas. thanks Paneuro.

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Have you resolved this issue? I'm having similar problem with my right rear tire negative camber. I blew out a tire already, multiple alignments (4 times), and now inner side of new tire is wearing out. I've been to two different alignment shops, and a BMW certified mechanic shop. My mechanic have mentioned taking mine the dealership that does "weighted" alignment, that I have yet to do. He said there were no issues with suspension. But the problem seems to keep coming back.