I have a 2007 Boxster 2.7l. and after 7 years of usage my TPMS finally gave in.
So now it's time to change them. The question I have is what frequency are they. My friend as a 2007 Boxster also and the dealer after verifying his VIN told him they were 315MHz. But I also heard that all US Porches uses 433MHz. So how can I tell which ones I need.