But the agro of time waiting for a courier to collect, the courier losing his wheels, the arrival day won't count as a day to work on them for the refurb company, neither will the return day, so you're looking at nearly 5 days. (Posting to refurb compay, recieving day, working day, returning day, delivery day) So hire car for 5 days + postage there + postage back + refurb = lots.