Re: SWAY
- From: William Boyd <williamboyd@xxxxxxxxxxxx>
- Date: Mon, 03 Oct 2005 20:26:43 -0500
D.J. Osborn wrote:
Why do I feel like this where I came in. Should I stay and see the movie all over again, maybe I can get more out of it. NAH!"Will Sill" <will@xxxxxxxxx> wrote (in part):
TIRES, both on trailer & tow vehicle, should be correctly inflated for the actual load you're carrying. The best pressure is that shown on the inflation chart for your actual measured weight.
That's not what Michelin states, just look at the explicit inflation recommendations on Page 6 of their RV Tire Guide, which can be found by going to http://www.michelintruck.com/michelintruck/pdf/RVTIREGUIDE1.pdf
Absolute precision is neither necessary or possible but don't over-inflate.
Inflation above the minimum for the load isn't overinflation, just as adding oil above the minimum required for the engine isn't overfilling.
That "'minimum' pressure" statement comes from Michelin. Page 1 of their RV Tire Guide states, "If you look on your tire's sidewall you'll see the maximum load allowed for the tire size and load rating, and the minimum cold air inflation pressure needed to carry that stated maximum load." Note that Michelin uses the phrase "minimum cold air inflation pressure"--even though Mr. Sill ignores it. They do *not* state that the minimum pressure for the load is the best pressure; Mr. Sill makes that claim without any support from the tire manufacturers!
Please note, however, that Mr. Sill ignores *all* of the Michelin RV Tire Guide except for one small section on Page 1. By ignoring the rest of the document, he
takes his favorite statement out of context and tells a half-truth. Since he has repeatedly stated that a half-truth is a whole lie, then he must also admit that *his* half truth is a whole lie.
If one wants to properly inflate one's RV Tires, then one should follow Michelin's explicit inflation recommendations, found on Page 6 of their guide:
"How to Use The Actual RV Weight Information With The Tire Data Load Chart
"Let's consider an RV running on its original equipment 8R19.5 XZA LRF tires, with actual corner weights of 2,100 lbs. on the left front tire, 2,600 lbs. on the right front tire, 5,680 lbs. on the left rear duals and 5,160 lbs. on the right rear duals. For control of your RV, it is critical that the tire pressure be the same across an axle. Therefore, we must "overinflate" the left front tire and the right rear duals. Checking the load/inflation table below shows that a cold tire pressure of 70 psi will support 2,800 lbs. on a single front tire. To accommodate the temporary shifting of load from side to side which is common in RV's however, 75 psi in both front tires is recommended as this will provide a reserve capacity for the tires.
"To determine the air pressure for the rear duals, again take the heaviest position, in this instance, the left rear which weighs 5,680 lbs. The load/inflation table below shows that a cold pressure of 75 psi will support 5,740 lbs. on 2 dual tires. For reserve capacity, a cold inflation pressure of 80 psi is recommended in all four dual tires.
"It is important to note that the cold inflation pressure for the tire must never exceed the maximum inflation rating stamped on the wheel.
"REMEMBER: For control of your RV, it is critical that the cold inflation pressure must be the same on both sides of an axle."
The wise individual will ignore Mr. Sill's intentional misrepresentations, as well as his claims that the Michelin RV Tire Guide contains "sloppy verbiage," and that it is "illogical" and "contradictory." Instead, the wise individual will read and follow the tire manufacturers' explicit inflation recommendations.
-- BILL P. Just Dog & ME .
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