Originally Posted by MaxTow
Tire pressure is another heavily debated issue. Internet Wisdom is to run the tires at maximum pressure due to the side loading on the tires during turning. But as you know, there is lot's of competing opinions on tires with little to help pull fact from fiction.
Running the 16" at max pressure will create a harsh ride for the AS I am told...
Good luck with the purchase. I've not heard of any issue with folks changing to the 16" tires.
Thanks MaxTow, if that is the current wisdom, then maybe I will start with bumping up the pressure to at least 70 and see how I get on!
As for the harsh ride issue with higher tire pressures, I have read a few articles indicating that this might not be the case.
As a retired mech eng., I feel a bit guilty that maybe I should be expected to know these things - or at east be able to calculate them!
But being retired for over 15 years and having worked many years before that in general management rather than engineering positions per se, I am far from the text books and have little inclination to try returning at this late date!
That is my excuse anyway!
I can believe that it might be so however, perhaps due to significantly different spring rates between that of the trailer's rubber suspension and that of the tires themselves.
Considered as springs in series, it could well be that the difference in spring rate of the tires caused by a 20 psi difference in the tires in comparison to the spring rate of the trailer suspension might have very little effect on the
g forces transmitted from the road through the tires and trailer suspension to the coach body and that the trailer suspension is the major governing factor.
I'd be interested if anyone has a more definitive answer about that!
I know Inland Andy has a strong feeling that towing with heavy duty trucks has a deleterious affect on the Airstream structure, but I feel that is a different phenomenon and he could be right. Trucks certainly right more stiffly than other vehicles and I suppose those shock loads are transmitted quite well through the hitch, especially having the weight transfer bars. (
On the other hand, I tow with a fairly heavy truck, and so far after many cross country trips, haven't seen any evidence of adverse effects such as popped rivets ........ (yet!)
Thanks again for your remarks ................ Brian.