2012 Tacoma 4 Door (Shock/suspension Help)

The sport has the stiffest suspension of all the Tacomas, it is designed to be that way. The sport is not the off road for a reason

 

E rating is a load index. Generally it indicates how stiff the tires will be. More ply's will ride stiffer.

If the load index isn't indicated on the side, the number of ply's should be. The tires you listed are probably Passenger rated or Standard Load.

 

looking at the tire, says "112T M&S 1616 PJ2H JW1R"

 

Have looked at replacing all four with these but again, not looking for off road action (mud, sand or snow). How noisey are these and is the ride more comfortable on stock 17" wheels?

275/65R17 BFGoodrich All-Terrain T/A KO2