I found a 110 x 90 x 16 tire on sale so I thought what the hey. As the photos show, the tire has a larger diameter than the 4 1/4" OCC tire, 24" versus 20", making the rear tire match the front to eliminate the "Frankenstein" effect I got with the smaller tire. It adds a little weight but my 66cc Chinagirl has no problem hauling my heavy Stiletto around even with the heavier tire. The 4-ply tire rides a lot stiffer, but with the springer seat and springer front end I hardly notice. I hope to get considerably more mileage out of this new tire with no punctures.