good read this I would like to make the point that if your government would remove the stupid rule on the tread not allowed to protrude past the arch that would remove part of the reason that owners stretch tires in the first place . Some of the rules they have on cars over there are beyond reason !!!!!! You all have my sympathy and RESPECT for continuing in the car hobby despite the maze of rules , regs , and that insane thing you call a mot !!!!!!