Since we don't carry Allen bike racks, we don't offer a brand-specific lock that would work. Typically, the bike rack manufacturers use threaded hitch pins that have a proprietary thread pitch, so you're forced to purchase their hitch locks. That being said, we do offer a universal-type lock that works with hitch mounted accessories for a 1-1/4 or a 2 inch hitch. I'd recommend the Lets Go Aero # SHP2082 which works for hitch accessories with hollow shanks.
Installation would involve removing... view full answer...
Since your tire size of 225/75R15 has a diameter of 28.3 inches the Adco Spare Tire Cover - 28inch Diameter # 290-1756 that you referenced would fit and work great. view full answer...
Trailers that use 14 inch trailer wheels would have tire sizes installed that have an outer diameter of right at 26-1/2 inches which matches up with the size range that you referenced. A cover set like the part # A10-1201 would fit and work well. view full answer...