Head outside with a heat gun or hair dryer, stand upwind, and heat the tires. Knocks off that smell real quick. Leaving them out in the sun on a black flatbed for a couple days will do the same.

The only thing I hate about the Ameri-step is that the long handle is about a foot too short. The Cabelas model, about 50% more expensive, has the extra length that make it a lot easier on the back to pull.