Normally you do. If your card is extremely close to expiry (around a month) and you have proof that you will be returning home soon after your PR card expires I would apply for a PRTD but explain why you are applying while have a valid PR card. Do you meet your RO?If it is your first PR card renewal had you met the 730 days in the first 5 years and continue to meet the 730 days in the past 5 years?