How much were your new tyres? How do you feel about them now you've had them for a while? Does your van suffer from the insides of the rear tyres wearing before the rest of the tread?
I'm about to post, asking about adjusting the camber of the rear of my van as it suffers from that inside wearing as mentioned above. apparently, the rear camber isn't adjustable. (but I'm thinking, there must be a way to add a spacer to achieve the required adjustment)