Hank MI wrote:
I have 3 cars, they all sit on the tires year around. One, a 1970 Chevelle only gets a few thousand miles a year on it so it sits most of the time. Flat spots, yes it happens but usually works out of the tires after a few miles. Leaving the jacks down? Assuming hydraulic jacks the pistons are exposed to the elements. The hydraulic lines are also under constant pressure. Supposedly they're designed for that but your tires and chassis springs are also designed to support the weight of the vehicle all the time. I leave mine on the tires and jacks up 'most' of the time. I say most because the jacks are down when we're using it or if I need to put the slides out to clean or work inside it.
Oh, according to some tire experts on the forums you should replace your tires every 3 years because somebody had a blowout on a 4 year old tire. I hope nobody reports a blowout on a 2 year old tire or we'll have to replace our tires every year.
Firstly, automobile tires are not subjected to the weight that motorhome tires are, while they're sitting around for months at a time and collecting sunshine in the process.
Now just for instance, how many blowouts does the average car have in it's lifetime and with no matter how old the tire is.
I've never had one in a car, which I only check now and then, but have had two in two different motorhomes at 5 and 6 yrs old. One new to me, so no prior history and evidently not a requirement, right?. The other was under my full and meticulous care and I'm most sure that neither was the result of a road hazard.
