The rear tyres on my X5 wore down on the inside edge, the tyre dealer identified a tracking misalignment but the tool to adjust is only available at the BMW dealer.

The dealers have quoted me £350 to carry out a full axel alignment (compared to £35 that the tyre depot charge) and i am reluctant to pay this unless other options are exhausted.

Any ideas how or where I could get this work done? getting very frustrated at being told I need more work than necessary and then them having a monopoly on the tools needed.