i have a set of Cooper STT's they are 33/13.5/18's and I've had them for a while and am noticing there is more ware in the center so i probably should back off with the pressure i am running what the tires recommended but am not towing anything that heavy (E-rating)

so what kind of pressures are people running with these tires? thanks!

 

What pressure have you been running?

If it is a max 80 psi tire, run them at 50. If a max 65 psi, run them at 45.

 

45 - 50psi

 

they read 65psi and i have been running 60psi..........

 

Why do people think they need to run their tires at near max pressure? It's an E-rated tire. The max pressure is for carrying the max load on the tires. Must ride like crap with 60psi!
The amount of pressure you should use would be more based on the width of your wheel. Run whatever it takes for your tire to get a good contact patch.
I have 35x12.50's on stock 18's (7.5" wide) and I'm running around 38 front and 32 rear, wearing well so far and the handling is just fine.