Not certain I would be that cut and dried Stewart.
My last Audi RS6+ had Conti on arrival - replaced with MPSS and significant improvement.
Current Aero S2 had 4 year old Vredestein Ultrac which were recently replaced with MPSS and had a VAST improvement.
I always hate paying the extra and won't do it for the lorry which spends most of its time on Motorways and in town being driven at 50%. I still buy quality branded tyres but not the whole hog for Michelins.
I will pay when I know I m going to use the performance in them. Not to say other tyres would be within XX% and that's the bug bear as you say. Do I need and am I willing to pay for the final XX%.
