Last month I put new tires on my 2007 RT 210P. I have had Michelin, Cooper and Bridgestone. I was replacing the Coopers and I went back to Bridgestone which is what RT recommended back when the family still owned the company. The Coopers were fine and rode well but I just never did like the "feel" on the RT as well as when I had the Bridgestones. My only real complaint with the Cooper tires were they seemed to pick up more heat on very hot, high speed highway miles. Of course, all tires pick up heat and pressures increase in the tires but my TPI also shows heat as well as pressure. The TPI indicated increases in pressure in the rear tires of up to 12 psi. The Coopers were OK but not OK enough for me to use this again.
Now, we have some really competent contributors on this forum that know a whole lot more than I do about tires and most other things to do with mechanics. SO, I am sure you will get many different opinions and a lot of valid information. I'm just saying my choice is the Bridgestones. My tire size is the same as wmgeorge.