Tire help

[SXYXC]

Ok i have 2 more tires already at my house that i can use. but i really want to know is there anyway that i can expand the dieing life of my BFG f1 gs that i have on the rear?? i was really pissed when i looked at my tires and saw the tread in the middle was really low, and so i wanted till morning and tested my tire pressure, and i guess when i brought my tires to get rebalanced the ppl reaired up my tires, because i had then switch the balance weight from the front to the back. but anywayz i checked the pressure and it was at 40PSI with is almost the max. and i have been driving on that for almost 2 months. what psi should i set it at??

 

[the98stang]

Ok i have 2 more tires already at my house that i can use. but i really want to know is there anyway that i can expand the dieing life of my BFG f1 gs that i have on the rear?? i was really pissed when i looked at my tires and saw the tread in the middle was really low, and so i wanted till morning and tested my tire pressure, and i guess when i brought my tires to get rebalanced the ppl reaired up my tires, because i had then switch the balance weight from the front to the back. but anywayz i checked the pressure and it was at 40PSI with is almost the max. and i have been driving on that for almost 2 months. what psi should i set it at??

The only way you make a tire last longer is keep proper tire pressure, rotate, and align.

I usually keep 30-32lbs in my tires, if the max is 40.