I'm considering getting a second set of wheels for winter. What is involved with our Volvos to have a second wheel set registered with TMPS? Is there a method for us owners to register them or do you have to take it to a dealer? Can you have two sets registered at the same time or only one? My old car I just had to run my summer wheels without TPMS as it could only have one set registered and I wasn't going to the dealer with each wheel change.