"Blacat, my '56 4d Southampton needs new tires. I have 2-1/4 inch wides on now. What width did the '56s come with when new?" According to my Coker Tire catalog, '54 thru '56 models came with 21/2" - 211/16" whitewalls. Pre-'54 models came with 3" or greater. Chuck Ariens '81 Imperial "Beauty"