Our trailer spare tire wall mount is designed to accommodate tire diameters ranging from 10″ – 15″. They will mount to any trailer with 16″ on-center trailer wall studs. An adjustable channel welded to the wall mount bracket will allow you to set the proper height for your spare trailer tire. Keeping your trailer’s spare tire inside the trailer will make sure you have it when you need it. Another benefit of keeping the tire inside is it will keep the rubber tire hidden from the harmful UV rays. Just don’t forget to check your tire’s pressure from time to time!