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Elite Veteran
Posts: 1069
 
Location: MI. | When we change out the tires from D's to E's, does the axle weight rating also change??? GVWR 16000.....GAWR 6400
Edited by Gone 2009-10-07 7:38 AM
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Expert
Posts: 5870
  
Location: western PA | No. You are not changing any mechanical elements, just the capacity of the tires. |
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Elite Veteran
Posts: 795
Location: Tenn/Ala. | The "official" GAWR will not change. It is printed on the ID plate, registered with the trailer's manufacturer, and has a bearing in the VIN assignment. Unofficially, if your tires were the limiting factor then yes, it has gone up. If you are stopped and weighed, the officer will use the plate, not whatever is on the unit now. For what its worth- I have seen the mfg issue a new VIN number and plate when a tire or axle upgrade is done. But it is apparently more involved on their end than simply printing up some new documents because it is an unusual occurance. Also be aware- the weight rating system from "D" to "E" is not parallel between LT & ST tires. I believe a "D" in the ST235/85R16 will have a higher weight rating than an "E" LT235/85R16. So moving "up" to an E in this case may reduce your capacity.
Edited by RTSmith 2009-10-07 10:18 AM
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Elite Veteran
Posts: 1069
Location: MI. | Sorry I forgot to mention ST's.....I wouldn't put LT's on my trailer. Is 6400 a good rating?
Edited by Gone 2009-10-07 10:17 AM
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Elite Veteran
Posts: 795
Location: Tenn/Ala. | The rating is set by the Tire & Rim Mfg. Assoc. A ST235/85R16 Load Range "D" will have the same rating no matter the manufacturer. |
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Expert
Posts: 3802
Location: Rocky Mount N.C. | Quote "Gone".....I wouldn't put LT's on my trailer. Was wondering why you wouldn't use a "LT" tire on your trailer...? Just wondering.... |
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Member
Posts: 7
Location: Southern IL | The load rating on different brands of tires CAN be different. The ply's will be the same, but not necessarily the load rating. For example, you can have a Goodyear "E" rated tire and an Import "E" rated tire. They are both 12 ply, but one may be higher/lower rated than the other. It's common to find a "no brand" import tire rated higher than a name brand tire.
Regardless, changing your tires will not increase your axle's rating. Unless, it was under rated to begin with because of to light of tire. But you would have to have a new tag made to make it official. |
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Expert
Posts: 3802
Location: Rocky Mount N.C. | Originally written by rstall13 on 2009-10-07 11:59 AM
The load rating on different brands of tires CAN be different. The ply's will be the same, but not necessarily the load rating. For example, you can have a Goodyear "E" rated tire and an Import "E" rated tire. They are both 12 ply, but one may be higher/lower rated than the other. It's common to find a "no brand" import tire rated higher than a name brand tire. Regardless, changing your tires will not increase your axle's rating. Unless, it was under rated to begin with because of to light of tire. But you would have to have a new tag made to make it official. An "E" rated tire is a name for the old 10 ply. Alot of the E rated tires now days are only 5-6 actual plys instead of 10.... The 12 ply you speak of is an "F" rated tire.... Some of the tires of "ASIA" are "F" rated 12 ply that only have 6 actual plys of steel and polyester/nylon cord.. http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=55 http://www.goodyear.com/truck/pdf/radialretserv/Retread_S14_V.pdf
Edited by retento 2009-10-07 11:09 AM
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Elite Veteran
Posts: 1069
Location: MI. | Originally written by retento on 2009-10-07 11:29 AM Quote "Gone".....I wouldn't put LT's on my trailer. Was wondering why you wouldn't use a "LT" tire on your trailer...? Just wondering.... I was under the impression their load range is less.....wrong? St's have a better sidewall. Seriously is there a major difference?
Edited by Gone 2009-10-07 11:32 AM
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Axles/Tires
