IS A 10 PLY BEST FOR???

Thanks everyone... I am down sizing from my motor home and after about 6 years I have not been up to speed on the TT tire stuff. Seems to me that mtofell 1, got my attention. *** huntindog, 15 inch currently with radial.*** jimnlin, gvwr is 10.000 lbs. I had misstated the 12.000 lbs as I just purchased the Trunon sway rig for $500.00 to be 1,step-up from that gvwr."getting rid of the radials and putting on the E's... DEGA BOUND... COME AND JOIN US. THANKS AGAIN!