I've got 70K miles on a 2001 Nissan Frontier. Probably 90% are highway miles. The supension has been feeling a little soft. I feel like I'm rolling more from side to side when turning/changing lanes. I also feel like I don't have the traction I should have on irregular surfaces (i.e., pavement cracks and minor washboarding) due to tire bouncing. I hear a disconcerting suspension-related creaking from under the front end. That may be at least part of the problem. It may also be that I'm no longer running the tires at max. pressure. But I have to wonder how many miles the original shocks, struts, whatever we're designed for. Is 70K about right? Overdue? No problem? If I were to replace with upgraded parts, what would folks recommend? FWIW, I also still have the original tires, though they seem to have pretty good tread still.
Thanks,
-Scott