Closest I see is 20x10-8 in a few tread patterns -- would be an inch wider -- I had a set for a Deere 318 that were a lug design, but like these
View attachment 148 -- they didn't tear up the lawn and worked great for snow and mud. I called Gemplers and they set me up with my size even when not listed in the catalog or on the web site --- GOOD LUCK !