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Take a look at this.
It may meet your needs. Pneumatic tires, replaces typical trailer jack.

Expert Reply:

I spoke to my contact at Trailer Valet to get specifics on the tires supplied with Trailer Valet Swivel Jack and Trailer Mover, part # STC-V211.

The dual tires measure approximately 9 inches by 2-1/2 inches (this will vary slightly depending on tire pressure). The tires are tubed and are usually shipped with about 50 psi pressure. The typical working pressure range for these is 50 to 60 psi.

http://www.etrailer.com/tv-review-tra...-v211.aspx

Doug