Well,I was intending to buy BFGs but found some Pro Comp m/ts for sale.They are 315/75/R16. I assume they will fit on my 16x10s,will they?I dont know metric to well

Anyway they have about 5k miles on them and are in good shape.What do y'all think I should offer for all 4 of the tires?
Any negative things about them to be said,or good? How long do they last on the road,near 40-50k?,less?