I'm going to replace the rear tires on my oliver 1900 soon and I need some advice. The current tires are safe marks' and the rear left is a recap and is falling a part. The right rear has several DEEP cracks, one big enough to hide 3 quarters in. I've been looking at Firestone and Goodyear/Titan R2 raidels which is what is the type of tire thats on the tractor. The size is 23.1-26. The tractor weighs 16,665+/-2 ( fully weighted)and once I get the remote hydros working it will be pulling disks, shredders, seed drills and it is already moving round bales. What brand( Firestone and Goodyear/Titan)will handle what the tractor is/will be doing?