"Tow Tuff brings you the Universal Spare Tire Carrier your solution for carrying a spare tire for your trailer. The Spare Tire Carrier with Lock is universal to fit most trailer tongues up to 3"" wide and 4"" high to fit on a wide variety of trailers. The bolt circle fits 4 and 5 lug rims and will accept 4 and 4.5 bolt circle tires. The overall size of this Tow Tuff product is 13"" x 4"" x 6.25"", making it the ideal size to fit onto your trailer. Installation is fast and easy with the bolt-on design and included zinc-plated mounting hardware."