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Now the shocker

Yahoo Message Number: 15731
May not be a surprise to you but in the Tire/Smart Tire seminar they dropped a little bomb about setting tire pressure for coaches. The four point weighting system which I had pounded into me over the years..awiegh-to-go, etc....even a recent article in Motor Home mag touting the 4 point weighing......WRONG!!! At least it is no longer the official method..in fact, will invalidate the tire warrenty according the the seminar presenters. I checked all this at FMCA tire booths and got confirmation. A few months ago, we were told, the tire manufactures and the RV manufactures agreed to now set pressure ONLY by the fed label in the coach. Gave example of the Firestone/Ford problems...each company only 4 pounds apart...28 vs 32...and the actual weight required only 17 pounds. But the companys got creamed. The lawyers have won again...but they are serious. New brochures (got a TOYO), and they claim, all web sites will have only this method. The label calls for 120 in the 315's in front of my coach....old method of weighting would allow me to go to 100...but no more. Really pays to go to these rallies. Joe Cronin 6223

Re: Now the shocker

Reply #1 –
Yahoo Message Number: 15732
John:

Interesting point regarding the correct tire pressure. I requested clarification in January from CC on this matter after learning about TOYO's new pressure position. I've included some of the correspondence below. I apologize for the length, but it took sometime to get an understandable response.
Did you speak with anyone from CC on this matter? I'm curious if it has changed from what John at technical support provided.

Chuck Penque

03 Intrigue 11673

"Chuck,

The correct way to inflate the tires is to fully load the coach and have it weighed and then inflate the tires as per the inflation chart, if the coach cannot be weighed then the inflation values on the coach placard need to be used.
Toyo at this time is allowing Country Coach to use its own discretion when setting up tire inflation values. When re-setting the Smart tire the rule is to set the alarm at 10 psi below cold tire inflation pressure for pressure alert (light) and 3 more psi below that for low pressure audible alarm and should be set up this way by weight or by the placard.
Country Coach values our customers saftey above all else.

Thanks,
John.

Re: Now the shocker

Reply #2 –
Yahoo Message Number: 15734
We learned exactly the same thing when we took delivery of our new Magna in early December.
Yes, the lawyers HAVE won again - at the expense and inconvenience of all of us. The new "settings recommendations" are all for liability reasons - not practicality. When setting our SmarTire, Les Schwab would only set the tire pressure according to the max pressure recommended - and our Magna runs rough and uncomfortable.
I'm running 130 lbs in all tires. 130 which increases to 150 with heat.

Any suggestions????

Tom

05 Magna #6439

Re: Now the shocker

Reply #3 –
Yahoo Message Number: 15735
Hi folks,

This is not a shocker. Toyo changed their position as pointed out by another member and this subject was covered about 3 months ago. Simply - RV owners are not truckers so the thinking goes. Truckers pay more attention to, have consistent weights (weigh after loading), and do scheduled tire pressure checks. Rvers have more varying weight and give less attention to weighing. Going to maximum tire pressure gives a margin of safety and the tire manufacturers a reduced liability. As the Toyo west coast rep stated in January, a 6 point weighing using their brochure procedure is fine with them but get weighed often to be sure you have that margin. The CCI service manager in a Tucson rally, 3 years ago, stated a 95 psi minimun is recommended for sidewall failure protection. Of course, there is the life issue and 7 years was recommended by the Toyo rep for replacement to cover all situations.
Fred Kovol

Quote from: jcronin3366
May not be a surprise to you but in the Tire/Smart Tire seminar

they

Quote
dropped a little bomb about setting tire pressure for coaches. The > four point weighting system which I had pounded into me over the > years..awiegh-to-go, etc....even a recent article in Motor Home mag > touting the 4 point weighing......WRONG!!! At least it is no longer > the official method..in fact, will invalidate the tire warrenty > according the the seminar presenters. I checked all this at FMCA > tire booths and got confirmation. A few months ago, we were told, > the tire manufactures and the RV manufactures agreed to now set > pressure ONLY by the fed label in the coach. Gave example of the > Firestone/Ford problems...each company only 4 pounds apart...28 vs > 32...and the actual weight required only 17 pounds. But the

companys

Quote
got creamed. The lawyers have won again...but they are serious.

New

Quote
brochures (got a TOYO), and they claim, all web sites will have only > this method. The label calls for 120 in the 315's in front of my > coach....old method of weighting would allow me to go to 100...but

no

Re: Now the shocker

Reply #4 –
Yahoo Message Number: 15740
Personally, I like to err on the side of safety. It's a bit of a moot point for our coach anyway, since the front axle is at maximum with a full fuel tank and full load. I could set the rears at about 95 psi based on load, but I run them at 105. I just can't see running tires on these coaches at 70 psi, as I've seen some talk about on this board.
Is 130 psi what is placarded in your coach? If the ride is that bad, you may consider splitting the pressures between the "weight" pressure, and the placarded pressure.
Per

--- Tom tsims@...> wrote:

Quote
We learned exactly the same thing when we took > delivery of our new Magna in early December.

Yes, the lawyers HAVE won again - at the expense and > inconvenience of all of us. The new "settings > recommendations" are all for liability reasons - not > practicality. When setting our SmarTire, Les Schwab > would only set the tire pressure according to the > max pressure recommended - and our Magna runs rough > and uncomfortable.

I'm running 130 lbs in all tires. 130 which > increases to 150 with heat.

Any suggestions????

Tom

05 Magna #6439