Dually leveling question

BradW wrote:
On an srw truck, that same single tire will carry the same load running down the interstate at 70 mph for many thousands of miles or setting in the driveway for weeks. Me thinks it will be ok on a leveling ramp overnight.

With this comment you are completely missing the point as others.

Depending on tire rating and the load you are carrying on a duel wheeled truck, it is possible that you could be carrying the maximum axle load which is normally determined by the tire(s).

Assume the tires on a dually are rated at 3200 lbs each and you are carrying a load near the tires rating. Say 3000 lbs per tire. For purpose of explanation, assume the weight is evenly distribute between the left and right position, which may not always the case, so the axle will be carrying 12,000 lbs.

That means that either duals set is carrying 6000 lbs. (3000 lbs apiece). Now if I only put a leveling block under on tire, this means the adjoining dual is off the ground and has subsequently shifted its load to the other tire. You now have 6000 lbs setting on one tire that is only rated for 3200 Does this concept make sense. Is it understandable to you.

According to the Michelin tire manual "And in the case of duals,
it should be evenly distributed on blocks for both tires.
If not, the sidewall cables can become fatigued and
damaged, resulting in a sidewall rupture and a complete,
sudden loss of pressure."

Now, note that the guide says "can be damaged". It doesnt say it will be damaged. Just that it can be damaged. Damage is more likely to happen if the leveling block doesn't cover the full footprint of the tire. But the probability is there. Course some of you have already said that the engineers who design tires and publish safety practices don't know sh!t. Disregard what they say.Do it your way.
Why take the risk of damaging a tire. It's your choice. Personally, I would not do it.

So I'll say it again. For those who cant comprehend what the discussion is, you should not come on here and advise people to take risks, because you have done it that way for a life time and nothing bad has happened to you.

Go ahead and label me the safety police. I'll wear the badge proudly.

ryoung