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Old 03-08-2016, 01:17 PM   #71
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I thought this thread was about VEHICLE wheels and tires......now we are talking about trailer wheels? Different rules, different specs etc...for them.
Everything i posted was for OE wheels.
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Old 03-08-2016, 03:16 PM   #72
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Quote:
Originally Posted by MillerTime View Post
Your going to have to do better than that to prove me wrong. Because im saying it is not on most OE wheels.
I need factual proof to prove otherwise. (Like a number sequence, symbol etc)

If you're going to tell us and op that we need to know our rim ratings for switching tires, you need to have real proof as to how to find this!
What I'm saying is, do it yourselfers need to do a lot of homework when doing any kind of changes with their OE tires an rims, automotive or trailer.

I gave a reference with page number to a tire industry standard. What I quoted was not out of context. It was a factual statement from the reference.

If you're going to challenge information from FMVSS documents you're going to have to go and read them and put all the pieces together.

You can put any of these numbers in your browsers search engine. They are documents the vehicle manufacturers MUST apply before it can be certified.

571.109
571.110
571.119
571.120
571.129
571.139

Part 567 - certification is also referred to in most of the above documents (PDF)

p.s. The rim information is in them, Good Luck!

Bottom Line; What a vehicle owner does to his/her vehicle is his/her responsibility. Any outside instructions that may be binding by law will be in the form of state vehicle inspection regulations. CFR part 570.9 & 570.62 are the government's guide to those inspections.

This is now way too technical and will be my last post in this thread.
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Old 03-08-2016, 03:46 PM   #73
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Quote:
Originally Posted by Airdale View Post
What I'm saying is, do it yourselfers need to do a lot of homework when doing any kind of changes with their OE tires an rims, automotive or trailer.

I gave a reference with page number to a tire industry standard. What I quoted was not out of context. It was a factual statement from the reference.

If you're going to challenge information from FMVSS documents you're going to have to go and read them and put all the pieces together.

You can put any of these numbers in your browsers search engine. They are documents the vehicle manufacturers MUST apply before it can be certified.

571.109
571.110
571.119
571.120
571.129
571.139

Part 567 - certification is also referred to in most of the above documents (PDF)

p.s. The rim information is in them, Good Luck!

Bottom Line; What a vehicle owner does to his/her vehicle is his/her responsibility. Any outside instructions that may be binding by law will be in the form of state vehicle inspection regulations. CFR part 570.9 & 570.62 are the government's guide to those inspections.

This is now way too technical and will be my last post in this thread.
Ok, yes we know that the manufacturers have to meet a certain spec and to have it approved to meet dot guidelines.
But back to the real question that was brought up, that you interjected on.
-You stated that a person can or should find these ratings prior to upgrading a tire on an OE vehicle wheel.
- I stated that most of the OE vehicle manufacturers wont give us the specs for load and psi ratings for the wheels.
---so basically im sensing that you are retracting your stance on this now since there is no way the gereral public or even the manuf. employees (like i was) are actually able to attain this info.

Op....thousands of people, and even the dealers and the manufacturers, use the same wheels with p, LT and even load range E tires all on the same wheels.
I feel confident in saying, with out a doubt that you will have no issue with a LT E tire on your wheels.
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Old 03-08-2016, 03:59 PM   #74
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A 2830lb weight rating corresponds to 80 psi. They are one in the same.


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Old 03-08-2016, 04:58 PM   #75
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A 2830lb weight rating corresponds to 80 psi. They are one in the same.


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yes 2830 is a e Load rated trailer tire for 15 " rims and most all if not all e rated tires run at 80 psi max load . now my TH came with 24xx D rated tires .
the labels on the side of the TH state to tire size 255/75/15 D rated and state a max psi of 65 . that does not mean you can't put on E rated tires as the rated weight of the rim is 2830. PSI matters not .
for argument sake if i could get a C rated tire in 225/75/15 i could put that on also and run 110 psi as long as i stay with in the weight limit of the rim of 2830 there would be no issues other then a very harsh ride .
Bottom line psi is not a damaging factor in Wheel failure over weight is
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Old 03-09-2016, 09:42 AM   #76
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I disagree. You put 110 in a stock C aluminum rim and you are asking for a heap of trouble.


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Old 03-18-2016, 08:19 PM   #77
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My 2008 Tundra has been running Cooper 275/65.R20 E tires for a few years and is my daily driver. 45PSI on all four corners for daily driving and when towing our GVW 9300# 5R front stays at 45psi and the rear tires go to 65PSI. Tires are wearing well, they get rotated every 5k miles. Trailer has Maxxis ST225/75/R15 E that are run at 70PSI. Average 10MPG towing, 18MPG not towing mixed driving
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Old 03-18-2016, 08:32 PM   #78
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Ive run them on a 50 mile trip and they are a little swim y at 45lbs but if I put 50lbs in them it throws my sensors off. I'm afraid it will blow out the packing if left there. The pressure did go up about 5 lbs after they warmed up. Ill try that next trip. I got a little sway but I think the front of the trailer was a little high putting to much weight on the rear tires. Ill readjust that also. That racket the receiver hitch makes drives my wife and kids nuts though.
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Old 03-19-2016, 01:12 AM   #79
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Originally Posted by MillerTime View Post

OkOp....thousands of people, and even the dealers and the manufacturers, use the same wheels with p, LT and even load range E tires all on the same wheels.

I feel confident in saying, with out a doubt that you will have no issue with a LT E tire on your wheels.
The rules for replacement tires are called "tire industry standards".

Searching for answers there are a little more complicated because not all are published on the internet.

Wheels/rims are not required to have their specifications, other than size, displayed on them. Tire manufacturers are required to describe the appropriate rim for each tire they manufacturer.

Tire industry standards say this in every instance for replacement tires: "Never exceed the maximum load capacity and/or inflation pressure of the wheel."

The very best reference I can find on line is from
Bridgestone/Firestone tires. It's lengthy, and complicated for people without a mechanical background. From it you have to fit the situation to the replacement tires selected. It describes the notations to be made in the vehicle owner's manual and the use of an auxiliary tire placard for the replacement tires.
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