Banjobj, your right, thats the facts Jack, well almost. R4's work really well on asphalt, concrete, marble, granite, tile floors etc. Problem is only a few of us typically bring the tractor in the house with the possible exceptions of McChalkey and Harv. I like R4's for mowing because they cut up the ground less. But for general getting in the dirt and moving stuff around, its going to be tuff to beat the R1's or AGs. EXCEPT, BUT, if you have the beautiful new lineup of R4's now available at your local Michelin tractor tire dealer. Just check out the R4's the little fat man makes. XM27's will do what you need in a R4 and then some. Will they have my size you might ask, well go to the Michelin website and use the tire selector and it will help you find out or Call, call, call now to find the dealer nearest you. Rat...
P.S. Somewhere somebody has the address on this site, its not just Michelin.com, I think "ags" is involved in the name somewhere. I have it on my other computer.
Double P.S. The above member at TBN is in no way affiliated with or endorsing Michelin tires. Should you ever buy new tires for your tractor that are not Michelins, you are silly.