Ill have a rant now, i have stretched tyres, and will always have them! But they are not legal, if you can be told off by the police and fined they are not legal!
The fact they are a grey area means nothing, under the construction and use regulations regarding tyre safety they are fitted outside the manufacturers recomendations and are illegal!
I know this wont stop people doing it, sure as hell wont stop me.
As for the people saying ''do me for em or f**k off'' little word of warning, the max fine for incorrect/dangerous tyres is 3 points and £2500 fine! I had a pretty long convo with a traffic cop about this as i posted when i got stopped for mine, 195/45 on a 9j with alot of poke!
The best way to deal with police in this situation is stay calm, talk to them like they're human, and u will hopefully get away with a PG9.
Be a t**t and ur gunna get fined/points and possibly get your car impounded and face some pretty hefty storage charges!
My two cents
