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Flat Tag.
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Roy, do you know if you drove on that tire while it was underinflated or did it go flat after you arrived? Geo.
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I think it went flat after we stopped overnight. We stopped at Midway Arches on the Will Rogers turnpike in Okahoma and don’t believe it was flat. Probably did a walk around. It is the passenger side, so I think I would have noticed even if I did not do a walk around. Then drove a 130 miles home and park at a small overnight RV Park ( Stage Stop behind Lambert on Hwy 65). Next morning it was flat.
Roy
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FOLLOW UP to Flat Tag
I called Coach Net this morning within 30 minutes they had located a 365 tire and the road service was out with in the hour. The tire tech was very good. He changed the tire, installed a new valve stem, oiled the studs, cleaned the nuts installed nuts with a different smaller air tool, then torqued the nuts to 475. And he was a nice guy. We back on the road again. Again thanks for all your help.
Roy
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Roy, not that is critical, but for info/knowledge did Coach net picked up the service / tire charges?
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I always thought all torque values are based on DRY clean studs.
However I read the Alcoa wheel manual and the use of any oil or lubricant requires care, so much so Alcoa issues a warning.
Do not allow lubricant on the ball seat or beneath the cap nut head. This is mentioned on section 4 of the manual listed below.
https://www.arconic.com/alcoawheels/catalog/pdf/servicemanual-english.pdf
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Dorel, Coach-Net paid for the service call, I paid for the tire.
Roy
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Thanks Roy, good to see you are back on the road…. -
Jon, thanks for the Alco wheel infro. I was not standing close to the wheel but it looked like he put a few drop of oil on the top of the stud thread. If I understood the Alco information, the torque should have been less that he 475 , 300-400. I may be slightly over torqued.
Roy
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Roy, A lot of folks operate using old wives tales as their methodology and in today’s world with access to the internet there is no reason to ignore accurate information.
What is critcal however is where the nut contacts the wheel must be dry and free of any lubricant or material that will permit slippage between the nut and the wheel surface.
Dry clean threads are all that is required but accoridng to all the factory manuals a drop of oil on the threads is not objectionable.
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Coach net will pay for service call and new tire if you get that part of the coverage it’s worth it , the toqure spects are marked right on the wheel nut
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I asked a Truck Tire Shop one time to check the air in one of My Prevost tires ? And put some air in it if it was needed. He said , I cannot do that , We have to take the tire off and place it in a safety cage before we can air it up !
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Seriously?
Does that rocket scientist listen to himself? I suppose when an 18 wheeler needs the tires checked and topped off he is prepared to pull 18 wheels.
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Good grief, back in the day when even Jon was a puppy we caged the ole 2 piece truck wheels because they would in fact kill you. Who does that today, no one unless they just don’t want the work.
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Tom,
Right ? WTH ? ( What the Heck ) I agree with a cage for a Split Ring being Necessarry , But these things ?Grandma Was Using the acronym WTF all the time after learning to text . She thought it meant WELL THATS FANTASTIC ! Beee Careful with Acronyms , Just Saying !
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Re: tire pressure below what the chart gives, there is an equation for calculating inflation pressure based on actual tire load. The equation is:
W = W_max * (P/P_max)^0.8
W = Actual measured load of the tire
W_max = Load rating of the tire
P = Actual inflation pressure of tire
P_max = Reference pressure that W_max is given at (i.e. 10,000 lb at 130 psi, cold, for example)You can rearrange the equation to get the target inflation pressure for a given measured load:
P = (W/W_max)^1.25 * P_max
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