ok cool so it's making sence now, one of the main things I was thinking about was wearing tyres out while driving in a "fun" manner with the centre lock enguaged. so yeah not the same principle as when i get out in the pooring rain in my dads fj40 landcruiser to lock the hubs and then having to unlock them the second we get back to tarmack to stop the tyres getting shredded
.....or something like that.