correct tire pressure

[mikemgb77]

I have a 40' fifth wheel weights 13000 empty 16000 fully loaded just bout new goodyear G614 tires what is the best tire pressure to run

[JIMNLIN]

Goodyear Tire and Rubber .... weighing RVs
Special Considerations

"Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up".

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Lets assume the trailer is a tandem axle unit.
Most folks that have been around for awhile and have towed trailers for hundreds of thousands of miles know and understand the benefits of max sidewall pressures. We also know we don't have any braking issues nor do we have wearing the tires centers when we have over 3000 lb load per tire.

Now if the trailer is a 16k lb tri axle and you have seriously over tired the trailer with a 3750 lb rated tire then max pressures will be too much pressure. If thats the case then these folks have some good advice;

rvsafety.com

Tire Load and Inflation Ratings

Note: Towable – Travel Trailer/ 5th Wheel owners Due to the severe use conditions experienced by tires when axles are very close together – tire industry experts recommend maximum (sidewall) inflation pressure for towable tires unless this causes a sever over-inflation situation (20psi+), often referred to as the ‘basketball effect’. If this is your situation allow a 10 – 15psi safety margin above the minimum required inflation pressure.

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Check out this tire industry experts tire safety blog for lots of good sound advice that actually works instead of what a tire mfg though should have worked........ trailer tire facts

[freewayrandy]

There's a psi rating on the wheels too. I'd check that.

[rhagfo]

chrizg wrote:
Max pressure. While in Elkhart I talked to the main tire supplier there and I asked this same question. They said trailer tires should always be at max and if you have a blowout and request warranty coverage and you tell them you run it below max pressure they will deny the claim.

That is because trailer manufactures always put a minimum tire on trailers. What I mean by that is the tire is carrying right at or just under the maximum weight the tire is rated to carry! Once you chose to upgrade the tires to a much higher capacity, then things change. There isn't a tire on my whole rig that runs at max pressure. I value traction too much to do that. You might try the tape test across the tread. I'm

[1ofmany]

110 psi.

[byronlj]

I have similar weights and tires as you. Goodyear Wingfoot guys said only 100psi.
Dave

[big_bird_2]

I use G tires and know from experience not to use max. The farm coop in Ft. Collins, CO told me these tires are good for loads of about 25,000 lbs. A vacation 5th wheel is far from that. I was loading the tires to 110 and the installer climbed all over me. He said I should start at 85 go lower and he anticipated 80 was good for me. I have been running 85 and I see a gap on the outer edge. I am reducing to 80 next trip. I am 12,877 dry and carry 10 gal of water, keep the waste tanks low and carry tools and clothes. I guess I am 14,000.

[chrizg]

Max pressure. While in Elkhart I talked to the main tire supplier there and I asked this same question. They said trailer tires should always be at max and if you have a blowout and request warranty coverage and you tell them you run it below max pressure they will deny the claim.

[BB_TX]

Additional info from Goodyear.

Improper tire inflation can cause problems for tires.

Underinflating your tires can cause poor handling, fast and/or rregular wear, decreased fuel economy and permanent structural damage to the tire.

Overinflating can reduce traction, braking ability and handling, as well as result in uneven wear and an uncomfortable ride.

• Inflation pressure should be adjusted to the tire carrying the heaviest load, and all tires on the axle should have the same inflation pressure.

[rhagfo]

BB_TX wrote:
You can go to the Goodyear web site and see their tire loading inflation chart, recommended tire pressure vs weight on the tire. But as noted, you need to weigh each axle, and preferably each tire, to see just what the correct pressure should be. Max pressure will ride harder. And will cause more wear in the center of the tread if it is too much pressure for the weight. But is a safe bet without knowing weight.

Goodyear tire pressure charts

X2!
Besides wear, is TRACTION, as in braking, run the correct pressure for the load. That is not always MAX on sidewall, that exactly that the Maxpressure allowed in the tire.

[Fire5er]

Many of us fill between 105 to 108 cold.

[jackmccormick]

I called tire dealer and got the information, but was told NOT to use max pressure.

[BB_TX]

You can go to the Goodyear web site and see their tire loading inflation chart, recommended tire pressure vs weight on the tire. But as noted, you need to weigh each axle, and preferably each tire, to see just what the correct pressure should be. Max pressure will ride harder. And will cause more wear in the center of the tread if it is too much pressure for the weight. But is a safe bet without knowing weight.

Goodyear tire pressure charts

[mcthomps]

Agree with 2oldman. Max as stated on tire.

[fj12ryder]

Triple axle or double? Is that 16,000 lbs. minus the pin weight or 16,000 lbs. including pin weight which would put about 13,000 lbs. on the axles.

I'm running "G" rated Sailun tires and 12,000 lbs. on a triple axle toyhauler and run around 95-100 psi.