Good Sam Club Open Roads Forum: Travel Trailers: Tire Replacement Question
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 > Tire Replacement Question

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Timmo!

Oregon

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Joined: 03/10/2005

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Posted: 02/27/21 10:55am Link  |  Quote  |  Print  |  Notify Moderator

So Grit my man,

Did you know when comparing load ratings between ST and LT tires, we are really comparing apples and oranges?

I talked to a the manager at Les Schwab yesterday (having my wife's car aligned and rotated the tires) and naturally we discussed LT vs ST tires.

He laughed and said, the DOT Standards for ST tires are not the same as passenger and LT tires. Around 2000, the tire and RV industry fought DOT to exclude ST and most commercial tires from the new rigorous testing requirements.

So I went to the CFRs and guess what, he is right.

ST tires are governed by a 48 year old, "20th Century" DOT testing requirements (Nov 13, 1973) and have never been revised. That would be during the era of double nickel speed limits and odd/even day gas rationing. https://www.ecfr.gov/cgi-bin/text-idx?SI........d0&mc=true&node=se49.6.571_1119&rgn=div8

Passenger and Light Truck tires are governed "21st Century" DOT testing requirements (Nov 18, 2002, revised for the 6th time on Jan 6, 2012). https://www.ecfr.gov/cgi-bin/text-idx?SI........d0&mc=true&node=se49.6.571_1139&rgn=div8

The Les Schwab manager said, ST tires have been made the same way for years, but do to a loophole in calculating maximum tire loads, years ago they were all increased by 10%. Nothing changed, same tire, same rubber--but overnight the load ratings all increased by 10%.

Why? Because they rely on the different 1972 DOT testing standards. What if they were tested using the new DOT standards? He couldn't say, but suggested it was all about money.

Hmmm, makes you wonder "why did the RV and tire industry fight to exempt ST tires from the new DOT test requirements?"

I asked him what tires does he suggest for TT--ST or LT, he said, "whatever the customer wants, both are safe".

LOL, it always about money.

GrandpaKip

Flat Rock

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Posted: 02/28/21 08:22am Link  |  Quote  |  Print  |  Notify Moderator

MFL wrote:

Good to hear, glad you got it done! Great choice!

Thought maybe the children above, were keeping you from returning.

Jerry

LOL


Kip
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Kavoom

Kansas

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Posted: 03/01/21 05:33am Link  |  Quote  |  Print  |  Notify Moderator

"The price you were quoted seems high but there seems to be some price gouging going on."

You can buy the tires on the Good Year site for $121 bucks. How much does it cost to change a tire?

I'd say some price gouging is going on...

Foggy

Kalamazoo Mi. U.S.A.

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Posted: 03/06/21 04:10pm Link  |  Quote  |  Print  |  Notify Moderator

Check the manufacture date marked on the tire. You are probably not going to wear your tires out but will need to replace them due to age/rot. A year or more setting in a warehouse is less useful time for you.


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time2roll

Southern California

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Posted: 03/06/21 05:25pm Link  |  Quote  |  Print  |  Notify Moderator

Did you call the tire store? I bet you get a better out the door price and they will be happy to accommodate your trailer.


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