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07-17-2013, 12:32 PM
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#1
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Senior Member
Join Date: Sep 2010
Location: Groves,TX
Posts: 546
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Load Ratings
Son has 3/4 ton, 08 chevy pu. Needs new tires. Current tires are E rated. Can he go to the D rated tires and not lose sway control. Is this safe? Tongue weight on TT is 1300 lbs. It is diesel. He was told he would get a softer ride. Hope I am in the right section.
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07-17-2013, 12:50 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,449
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If the load rating( weight capacity ) of the tires isn't equal to; preferably over ; the rear axle weight rating of the truck , DO NOT , go with a lower rating. The chances of poor control and even tire failure are too great.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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07-17-2013, 01:05 PM
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#3
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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A reputable tire dealer will NEVER install a tire with a lower load capacity than that called for by the manufacturer as shown on the driver's door jamb. Although it's theoretically possible to keep the same or even higher load capacity by moving to a larger-than-stock size D-rated tire, the lower maximum inflation pressure of the D-rated tire and its less rigid construction could well make it more susceptable to sway. The same construction that gives the promised softer ride also makes it softer handling and softer in resistance to side-to-side motion - not what one wants when carrying a slide-in camper or towing a heavy RV.
Rusty
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07-17-2013, 01:31 PM
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#4
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Senior Member
Join Date: Sep 2010
Location: Groves,TX
Posts: 546
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Thanks for the info. Going with the D rating. Even the possibility of mishap enough to decide foe him.
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07-17-2013, 01:40 PM
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#5
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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Can you please clarify post #4?  Do you mean he's going with the E-rated tire because of the risks associated with the D-rated tire that were described, or do you mean that he's going with the D-rated tire despite the unanimous recommendations not to do so?
Rusty
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07-17-2013, 01:43 PM
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#6
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Senior Member
Join Date: Sep 2010
Location: Groves,TX
Posts: 546
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My mistake men. I did mean the E rated tire. Thanks for the alert.
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07-17-2013, 01:49 PM
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#7
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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Good for him!
Rusty
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07-21-2013, 03:52 PM
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#8
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,903
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When I'm towing, my load range E tires are inflated to sidewall maximum to reduce sway as much as possible. I'm not concerned with the ride, just stability of towing and safety.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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07-21-2013, 04:32 PM
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#9
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Senior Member
Join Date: Sep 2012
Posts: 4,232
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If you're more concerned with ride as opposed to safety, an RV is not for you.
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