I see this thread is two years old but has been very helpful. :thumbsup: I have a 13.6 - 28 ag tire that has seated on the inside rim but about 2' of the outside rim will not. It is tubed. Have deflated and re-inflated several times to no avail. Cleaned the rim, sanded smooth and lubed with Bead Butter. No change in getting that portion to seat. I think my best bet is to use the tractor and wait for a really warm day. . Todays high was 64 F.