Tire pressure...what would you do?

[DanS]

Can't remember for sure. I gave him my worksheet but 85 front and 95 rear rings a bell. Actually he hasn't yet weighed it but he and I have identical coaches (99 Winny diesel pushers) so we used my "full" weights in the interim (not the best but better than nothing). LF = 2960, RF = 3460...rounded worst case to 3500 and applied to table and added 5# or so. LR duals = 7220, RR duals = 7100. Rounded up to 7500 / 2 = 3750 and applied tables...etc.

He's gonna get it weighed soon and adjust accordingly.

As you have found out, lots on information and mis-information on tire pressure and maintenance. I guess these types of issues makes RV'ing fun...I know it does for me.

[Tom N]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> and added 5# or so </div></BLOCKQUOTE>

I see no reason to add more air than weight requires. I have seen a mention of 5 or 10#s Why do this??

[DanS]

Hi Tom......I think it's an individual decision. For me it's a compromise with the lower table pressures recommended by the tire mfgrs and the other valid points presented in this forum that we should run much higher pressures. Also, it allows for scale error and occasional heavy loading of the rv (ie, lots of people, etc).

I haven't tried to run exactly at the table levels. If my ride was hard, I might consider it. I really don't think there would be a problem.

[Tom N]

Yes, it's an individual decision, but one has to consider the consequences of over inflated tires.

Overinflation reduces the tire's footprint with the ground, thus reducing the traction, braking capacity and handling of the vehicle. Overinflated tires can cause uneven tire wear and the tire will be much more susceptible to impact damage. Overinflation can cause a rough riding coach which can lead to many coach problems such as electrical connections becoming loose and cabinetry joints loosening.

I would never inflate to carry more than the GVWR (Gross Vehicle Weight Rating).

As an example my W24 is rated for 9000 front, 15,500 rear. According to my tire size and brand load & inflation charts this equates to 100# front and 95# rear. I would never add 5 or 10 pounds as a "safety" margin to these pressures.

I suggest RVers obtain a copy of Michelin's tire videos, RV - The Critical Factor and Things RV Owners Should Know. Both free by following the link at the bottom of this page.

http://www.michelinrvtires.com/miche...r/RvVideos.jsp

or by phoning 800-847-3435