Thanks for confirming the direction I was heading.
I'll see how much "tire sanding" resolves that rear rub, bit removing the extension, also removes a big piece of trim that would then look silly.
May get aggro with a Dremel once I have a wear pattern established so I can see how much actually needs to come off.
I'm an impatient person, this is good practice for me.
Okay, quick edit:
RedRunner, you mentioned 1.25".
My shop noted that the rear tires sit closer in than the fronts which sit more proud of the body.
Is there any value/point, in getting differential ones to try and even out that projection? Or just 1.25 for both?