Hi Mark,
We don't currently offer a tire and wheel combination in with a D load range but we do offer the Provider ST215/75R14 Radial Trailer Tire - Load Range D # TTWTRTM2157514D which could be mounted on one of the wheels in the link I've attached below. Each of these wheels has a 5 on 4-1/2" bolt pattern so you'll also want to make sure that's compatible with your hubs. view full answer...