jfkmk wrote:
I've read where, depending on the vehicle, one has to stop every so often (around 200 miles or so) to run the car to lubricate the trans. What if they don't do this? What if they stretch it to 250, 300 or even 400 miles? A vehicle with 20000 miles on the od could have a trans ready to drop.
Other components, such as suspension, wear the same way if towed or under their own power. Struts, shocks, hub assemblies, ball joints, cv joints, control arm bushings......the list goes on and on, will have the same wear whether towed or driven. So a vehicle showing 20k but towed 60k would have the suspension of one with 80k on the od.
I agree, changing diff and other fluids help to minimize wear, but you still have an "old" suspension on a vehicle showing fewer miles. Besides, most people can hardly find the key hole let alone know they need to change differential or transfer case oil or grease the u-joints.
of course those thing wear - if you see a vehicle w/ a pristine (barely sat in) interior and heavily worn & loose suspension, warning bells should go off.
at the same time 99% of the toads are pulled over INTERSTATES....not back roads or side / residential streets....the wear and tear on them is LIGHT at best (like a high milage interstate car).
its not like these things are hard to spot - base plates mounted to the front, even when removed leave some pretty obvious signs that they were there.
most coaches are low milage - i doubt the toads are gonna be high milage draggers.
towing on a trailer doesnt eliminate suspension wear (bouncing) either.