Just read Miscellany and the Williams advert is interesting - 8’ wide wheels feel the arch!!
Just curious:
1) Where will I be able to buy 8’ wide tyres?
2) Is feeling the arch quite legal in 2024?
If it's width, then yes you can fill the arch, you cannot protrude beyond
However we've all seen those pimped 4X4's and builders Ford 'trophy' pickup trucks running naughty widths and never seem to get pulled