Does having worn tyres mean that the car can be aligned – or do I need to fit new tyres first?

New or old tyres fitted will make little difference to the alignment readings. They will however have a big effect on the way the car feels to drive (even after the alignment has been corrected). Where there was a high degree of misalignment and hence, tyre wear present it would be recommended to have new tyres fitted at the time of the alignment adjustments are made.