You are correct, but the tractor had the smaller 2610 R4 tires when I saw it at the dealer. I told them that it had the wrong tires and wanted to make sure they put the correct tires on it. Initially, I wanted the larger R14, but you guys swayed me from that when the dealer said they were back-ordered. So, I'm now waiting on the larger wheels (standard SU) to come in. I will certainly look into the spacers, but I need to save my pennies for a building project that I've been waiting to put in.