Tires R1, R4, HDAP

[CFHartman]

Could anyone help me find some comparison to these tires?
Im hoping to buy a 2210 next spring with loader and MMM. I have had a 214JD garden tractor for 23 years with Ag tires on rear. I supose they are R1. I have had no problem with them unless the ground is wet. The R4 seem very poplar at most dealers. What are the HDAP tires I hear read about.
Thanks /forums/images/graemlins/tongue.gif

 

[DJLX]

Although not quite in the same league as 2210, my X585 has the HDAP tires. I find them to be good on the lawn except when making tight turns on hills when in 2wd. If the wheel slips at all it will tear the lawn. On straight flat mowing there is no difference between the turf tires and HDAP that I found.