as per the thread title , 16 months through a 24 month contract with t-mobile and i was thinking of passing that contract on to the wife and starting a new one for myself , is it possible or not ?

If you are asking if it's possible to take out an additional contract then yes it is as long as you pass the credit check for an additional line

cheers , need to ring them i guess

You can't port the number from one contract to another without terminating the original contract. There is no way to "swap" numbers between contracts.