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 > TT tire pressure - sticker or tire PSI?

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Terryallan

Foothills NC

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Posted: 09/15/20 10:09am Link  |  Quote  |  Print  |  Notify Moderator

We lets think about your rims as well? Steel, or aluminum? What is the tire pressure they are rated for. As you mentioned the original spare was a C with a max PSI of 50LB. Can your rims handle 80 PSI? I would just get 4 new Ds and be done with it, and they would be good Ds as well. Either MAXXIS, or Endurance.. not cheap china tires. and sir them to the sidewall max


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Timeking

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Posted: 09/15/20 10:18am Link  |  Quote  |  Print  |  Notify Moderator

OK so I'm either going to do what vahalla suggests (E to spare and get a D, less $$) or go all E like time2roll suggests (put a good D on the spare, more $$$).

Seems a shame to get rid of tires with no wear on them, maybe 10,000 total miles, but then I'm gonna have to get rid of them in 2 years anyway. Have to call my tire dealer and see what is what. Thanks for the input.

So I think I'll have a beer.

Sjm9911

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Posted: 09/15/20 10:45am Link  |  Quote  |  Print  |  Notify Moderator

Rotate it out to the spare. Get 1 tire, 3 years should be fine, just check the pressure on them before heading out on a trip.


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jadatis

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Posted: 09/15/20 11:24am Link  |  Quote  |  Print  |  Notify Moderator

Or you let me calculate a safe pressure for you.
Not knowing your data, I estimate the 65 psi was to low to laws of nature, but the E-load can do with about 75 psi.

That your old D blew on the driveway, can be because one time they overheated, by to low pressure for the load and speed used.
Then beginning crackes are made, wich tear further in time, by the forces on them. Then mayby only after 3 years that far that they blow, and in your case even on the driveway standing still.

MFL

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Posted: 09/15/20 11:43am Link  |  Quote  |  Print  |  Notify Moderator

We don't have the trailer weight info, to determine the best choice for tires. The original spare was a C, tires now 3 D-rated, and now 1 E-rated.

If it came with Ds inflate them at 65 cold, before travel. Unless you want to replace three tires, and use all E-rated, which will give you more load capacity at 80 psi. You could just buy one new D tire, and use the E as the spare. IMO, running 3 Ds and 1 E, is not the best choice, even though the E with lowerd psi to 65 is about the same as D at 65. For best towing, all tires should match, tread design, size, wt rating, and number of plys.

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valhalla360

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Posted: 09/15/20 12:05pm Link  |  Quote  |  Print  |  Notify Moderator

Timeking wrote:

OK so I'm either going to do what vahalla suggests (E to spare and get a D, less $$) or go all E like time2roll suggests (put a good D on the spare, more $$$).

Seems a shame to get rid of tires with no wear on them, maybe 10,000 total miles, but then I'm gonna have to get rid of them in 2 years anyway. Have to call my tire dealer and see what is what. Thanks for the input.

So I think I'll have a beer.


At 3 years, they should be fine for at least a couple more years...even if they were sitting (long gone are the days when they rubber would develop a permanent flat spot).

Trailer tires rarely wear out from miles. It's usually years that tell you when it's time to replace and it's usually around 5-7yrs you can expect to get out of them.

One other possibility, any chance the trailer was over weight? You could always swing by a CAT scale and see what you really have. That would also be useful in selecting which load range you want.


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IDman

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Posted: 09/15/20 12:11pm Link  |  Quote  |  Print  |  Notify Moderator

You are going to need new tires very soon so go ahead and get new ones NOW. Enjoy the peace of mind while traveling. Keep the best looking one of the old ones for a spare. Spare racks that attached to rear bumper are cheap.

JIMNLIN

Oklahoma

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Posted: 09/15/20 12:29pm Link  |  Quote  |  Print  |  Notify Moderator

If you buy new D (65 psi) tires and keep the E as a spare I would run the E at 65 psi if its ever put on the ground.
Its not a good idea to use a 65 psi tire on one end of a axle and a 80 psi tire on the other end. This will lead to flat spotting as the 80 psi tire won't have the same braking traction especially hard braking events. The harder tire has less traction causing that brake to lock up first causing flat spots in the tread about the size of your hand.


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Terryallan

Foothills NC

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Posted: 09/15/20 04:57pm Link  |  Quote  |  Print  |  Notify Moderator

Timeking wrote:

OK so I'm either going to do what vahalla suggests (E to spare and get a D, less $$) or go all E like time2roll suggests (put a good D on the spare, more $$$).

Seems a shame to get rid of tires with no wear on them, maybe 10,000 total miles, but then I'm gonna have to get rid of them in 2 years anyway. Have to call my tire dealer and see what is what. Thanks for the input.

So I think I'll have a beer.


Get rid of them. Or your going to spend more time on the side of the road. And I say that from experiance. Tires ROT sitting still. Tires lubricate themselves when the flex while rolling. No rolling no lube. so they dry out. Does NOT matter how many miles they have on them, as you already found out. Again before you get high PSI tires. Be sure your rims can take it.

I would get them off before your next trip. Or keep an eye out for a place to pull over. Especially if you had to go very far on the single tire after one blew. It more than likely damaged it further. And I can't stress this enough. Get good tires. Either Maxxis or Endurance.

theoldwizard1

SE MI

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Posted: 09/15/20 08:34pm Link  |  Quote  |  Print  |  Notify Moderator

Timeking wrote:

After sitting in driveway for a year, one D rated tire blew. The replacement was E rated; however, the installer said to inflate the tire to the 80 psi on the sidewall of the new E, not the sticker which is 65 psi. So now I am confused.

On a trailer, go with the sidewall rating. Low air pressure causes excess sidewall flexing which causes heat which will cause a tire failure.

In your case, the additional 15 psi is not likely to cause any wheel issues. If it was an addition >30 psi, I might be concerned about the strength of the wheel itself.

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