Originally Posted by inimitablestoo
I'm not so keen on the permanence of the number change but hey, a few years down the line that may change again, so who knows? After all, the likes of Lorenzo, Pedrosa and Edwards have all changed numbers in MotoGP despite the apparently inextricable linking of rider and number. Besides, the whole choosing a number idea has its roots in superstition, and if a driver feels his permanent number has brought him bad luck, he may want a new one. Either that or we see some devious means to get one: "Yes, my name is Nick O'Hulkenberg; no, not the German F1 driver, I'm a completely different Irish F1 driver, so I'd like a different number please".
Presumably there would be an exception if a driver left F1, the number was re-allocated and then the original driver returned while the number was still in use with its second driver.