Mmmmmm, I see what your saying, but my argument goes;
By fitting stretch tyres, have I broken the law.. No!
Simples!!
Also regarding an mot fail, the vosa chap who went over every nook and cranny couldn't fault anything else. When they do your mot, I'm sure they check tyre tread depth, not tyre stretch?!? So I'd have thought it would have been a pass?!? Again, back in that grey area!!
I'm thinking the coppa saw the car and thought 'boy racer' I'm having him!! Typical stereotyping m***** f*****