Thanks Dan and the others. Two questions Dan, do you run tubes in them or tubeless, and have you any dealings with the guy selling these there in Stony?
Good to hear about the 325 being better for the larger tractors. First set would be going on a 4620 which usually just has the dozer on it all winter and is my sprayer tractor as well. I need something with good sidewalls as it is also an emergency back up loader tractor as well, still has the mounts for a 125 Ezze-on bolted on, even though it hasn't seen that loader in many years. Call me paranoid or whatever you like, when it comes to looking after my cows I like to be prepared for anything, even something like loosing one or more other loader tractors in a fire. I had remembered those tires being advertised years ago as suitable replacements for the 16 inch normally on 2wd loader tractors and good to hear they do work well.
I would suspect they could be a bit of bugger to mount, as the ones I saw did have thick beads, but I would think with a bit of Murphy's slathered on and some patience, shouldn't be an issue. Tire equipment I have
As for some of those military/airplane tires being oddball sizes, think that pretty much was mostly with the actual British wheels, I have several wagons and such from the war and have many of those two piece bolted rims, and yes they take weird dimension tires. They certainly last a long time, most of them are 20 ply, but not many holding air anymore. FYI an easy way to replace those, it take half the bolted rim, and weld it inside a 20 inch Dayton, just need to shim them a bit around the edges to center them, and lay down several beads around the edge, have never had an issue with any of them I have done. Make sure you weld the rim positioned for proper gauge, so when you bolt it to the hub, the wheel is running where you want it to.
And as for the six bolt hubs on a 4430, I know mine had them, think it was something the later ones had the 8 bolt. And for keeping the bolts tight, only time I ever had an issue was years ago, run 10-20 military tires on the front of that same 4620, stole the wheels off the Jiffy hydump one spring. Thought the larger tires might make a big difference....actually didn't really seem too a lot. Though they would keep turning better than the smaller ones when climbing bedding packs ect. But you had to herd it down the road and it sat uphill on the front so much it looked silly, never put them on again