Ill second the vote for Grant wheels at AutoZone or whatever store in your area. My AutoZone is stocked and manned by total retards, who never fail to ask "who makes that truck you got there?", but they actually had a wheel and adapter kit for the 40 in stock. My only warning if you go with the Grant is to read the directions for the adapter carefully. They are a general type instruction for 5000 different makes. I f'ed mine all up, but luckily my Autozone, again, employs retards, who exchanged it no questions asked. And as far as I can tell the columns are the same, so what works on a 40 should work on a 55. Hodag