Tire Tread

I have a 2002 Z71 and the back tires are starting to wear on the outside and inside of the tire. I have BFG A/T KO's. Does anyone know why?

they are under inflated.....put more air in them...when the outter edges of the tires wear they are under inflated and when the cneter of the tire wears it is because the yare over inflated..........

Thanks for the response. I will add air. Any idea how much I should add? I mis-spoke earlier. I have T/A KO's. Thanks Again for the suggestions.

Look on the tires. It will say what the maximum pressure is you can add.

I worked with tires for 7 years at a tire repair shop, and we usually put 35 in them. Its a good in general pressure, unless you haul alot of weight.