I called Discount tire to order Nitto terra grapplers 295-70-17 for my 2006 Ram 2500 and the salesmen informed me that tire not only does not come as a E rated tire but also that they will not last very long on a 2500 pickup ???? I have read mixed reviews about how long they will last ??? Anyone out there have first hand knowlage ???? Also I cant seem to find an alternate tire of that size ??