Have just purchased Kitfox IV-1050 SN:1685. It has 18X8.50X8" 4ply garden tractor tires on chromed steel original wheels. Does anyone have a servicable set of PN LT-26 20X7.00X8" tires I could buy, or know of something that would be a suitable replacement?The tires I have may be great on a garden tractor, but they don't work all that cool on this airplane!