trailer tires

[sign_man]

so my trailer is rated for d tires but can e rated be used in place of d rated?

[Cummins12V98]

Contact GY tech. They will tell you when upping load range weigh your RV and add 5psi to what the weight/inflation chart for your specific tire says.

Better stopping traction, ride and tire wear.

[sign_man]

Cummins12V98 wrote:

sign man wrote:
When going from d rated to e rated Should the e rated tires always be inflated to the maximum pressure regardless of how much weight there is?

NO!

May I ask the reason why

[Cummins12V98]

sign man wrote:
When going from d rated to e rated Should the e rated tires always be inflated to the maximum pressure regardless of how much weight there is?

NO!

[Ralph_Cramden]

.

[CALandLIN]

sign man wrote:
When going from d rated to e rated Should the e rated tires always be inflated to the maximum pressure regardless of how much weight there is?

Anything above vehicle manufacturer recommended 65 PSI is optional. But, you waste your money for additional load capacity reserves if you don't use some of it.

Maximum inflation for Original Equipment trailer tires is a normal recommendation. It's not a requirement for higher load capacity replacements.

[sign_man]

When going from d rated to e rated Should the e rated tires always be inflated to the maximum pressure regardless of how much weight there is?

[Ron3rd]

The Goodyear Endurance is a good tire as noted above, but the Carlisle Radial Trail is holding up very well too and getting good reviews and is a little cheaper.

Neither are the notorious "China Bomb" tires so you pay a bit more for them. I went with the Carlisle E rated tires, found the lowest online price at walmart.com, took that into my local America's Tire/Discount Tire store and the beat the price by a buck as they'll match any online price.

[JIMNLIN]

3 tons wrote:
From what I heard from a tire dealer there’s a reason why they are called ‘trailer tires’. When asked, he said that trailer tires have heavier sidewall construction to help deal with the scrubbing (e.g. twisting) that occurs on multi-axle configurations...Just saying, but I’m no expert.

ST tire manufacturers propaganda for several reasons. One biggie is...

FMVSS 571 tire testing
The testing for bead unseating resistance is identical for a ST and LT tire.
The testing for (1) bead unseating resistance and (2) strength were identical for tires representative of moderate to heavy 5th wheels and thus no advantage is given to either tire type.

Tire dealers that don't know this simply pass along any mis info as we know this to be. Size per size they both stand up to side stress issues however one has had in the past a terrible history of sidewall zippers and mostly tread delam issues.

[3_tons]

From what I heard from a tire dealer there’s a reason why they are called ‘trailer tires’. When asked, he said that trailer tires have heavier sidewall construction to help deal with the scrubbing (e.g. twisting) that occurs on multi-axle configurations...Just saying, but I’m no expert.

[MFL]

Ralph Cramden wrote:
"trailer tires"

Nice pic Ralph! :C Everyone has an opinion about tires, some are even correct. You have to have some knowledge of tires, come on, let us know your thought???

Jerry

[MFL]

sign man wrote:
found it 2830lbs its only an extra 15lbs of air pressure. should be fine?

The E-rated will work, just be sure the valve stems are rated for 80 psi also. Air to full pressure to get the advantage of the heavier tire.

Jerry

[Lwiddis]

The quote from Goodyear you posted is similar to what all the trailer tire manufacturers say. Yet so many trailerites disagree.

[sign_man]

OEM is st225/75r15 D

[sign_man]

JIMNLIN wrote:

sign man wrote:
found it 2830lbs its only an extra 15lbs of air pressure. should be fine?

You didn't give us a OEM size and load range for your tires but a 2830 lbs fits a ST225/75-15 E tire @ 80 psi.
Your OEM tires may be a ST225/75-15 D at 2540 lbs.

If your trailers actual scaled tire loads are close to 2400-2500+ lbs then the E tire at 2830/80 psi would give you 15-18 percent reserve capacity. Pump those E tires to the max if you want the full benefit of those new E tires.
Like Goodyear says;
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 pen st225:75r15 Dthe 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 **