FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
Well if you didn't like that one you're really not going to like this quote.....: “Vehicles shall be equipped with tires on the same axle that are matched in tire size designation, construction, and profile.” “A major mismatch in tire size designation, construction, and profile between tires on the same axle, or a major deviation from the size as recommended by the manufacturer are causes for rejection.” DOT 49 CFR 570.9 - Vehicle in use safety standards.
FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
I don’t know about property damage to your own trailer but, but if that tire caused injury, death, or significant property damage to another, chances are very good there will be someone investigating everything they can…
Love my mass produced, entry level, built by Lazy American Workers, Hornet
1) Radial tires do not have ply's. Someone should tell the tire shops that. Really they should, I called 6 shops and asked what the difference between a "C" and "D" rated ST tires was, and all six said 6 vs 8 ply's. Oh well....
2) I get a stronger sidewall on a D vs C tire, yes? Does anyone have the spec on the sidewall strength? Please tell me the added sidewall strength "is not" coming from the added psi, 50 vs 65.
3) Load capacity does not matter to me.
4) There are no stamps or markings, anywhere inside or outside on my rims. Heck, it would appear I can put a bicycle tires on them. Ha ha, funny funny!
jwblock wrote: ..... Someone should tell the tire shops that. Really they should, I called 6 shops and asked what the difference between a "C" and "D" rated ST tires was, and all six said 6 vs 8 ply's. Oh well.... ....
And I share your frustration. But understand, the guys at tire shops are sales folks and the labor needed to mount tires. What you are looking for is an engineer - and lucky for you, I am one.
jwblock wrote: .....2) I get a stronger sidewall on a D vs C tire, yes?.....
Yes. but the important point is you get more load carrying capacity.
jwblock wrote: .....Does anyone have the spec on the sidewall strength? ......
There isn't a spec. It's up to each tire manufactuurer to determine what is needed.
jwblock wrote: .....Please tell me the added sidewall strength "is not" coming from the added psi, 50 vs 65....
No, but the added strength is a direct result of the pressure - the strength needed to contain the pressure.
jwblock wrote: .......3) Load capacity does not matter to me......
It should. Larger load carrying capacity means less likely to fail.
jwblock wrote: .........4) There are no stamps or markings, anywhere inside or outside on my rims. Heck, it would appear I can put a bicycle tires on them. Ha ha, funny funny!
And I also share your frustration there as well. But I have done a bit of research and found that from a design perspective, the actual load on a wheel is much much more important that the inflation pressure. So if you are NOT changing the wheel, but ARE using more inflation pressure, then most wheels should be OK.
CapriRacer made some very good points however I would caution anyone against using pressure in a wheel above its PSI rating. I've seen cracked aluminum wheels and I've split truck and trailer steel wheels from not following the wheels max psi rating.
Over pressuring the wheel alone won't usually result in a split wheel but as the wheel takes on load is usually when the damage can happen.
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Quote: Well if you didn't like that one you're really not going to like this quote.....: “Vehicles shall be equipped with tires on the same axle that are matched in tire size designation, construction, and profile.” “A major mismatch in tire size designation, construction, and profile between tires on the same axle, or a major deviation from the size as recommended by the manufacturer are causes for rejection.” DOT 49 CFR 570.9 - Vehicle in use safety standards.
FastEagle
Your taking the wording out of context with 570.1/.10 intent when we look at the req as a whole.
§ 570.3 Applicability.
This part does not in itself impose requirements on any person. It is intended to be implemented by States through the highway safety program standards issued under the Highway Safety Act (23 U.S.C. 402) with respect to inspection of motor vehicles with gross vehicle weight rating of 10,000 pounds or less, except motorcycles or trailers.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers
'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 gvwr two slides
FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
Well if you didn't like that one you're really not going to like this quote.....: “Vehicles shall be equipped with tires on the same axle that are matched in tire size designation, construction, and profile.” “A major mismatch in tire size designation, construction, and profile between tires on the same axle, or a major deviation from the size as recommended by the manufacturer are causes for rejection.” DOT 49 CFR 570.9 - Vehicle in use safety standards.
FastEagle
Not saying I didn't like it. My tires/wheels are matched. Look at my specs I posted. One must use a little common sense. My tire and wheel combo has a higher rating than is required by the sticker on my trailer. Do you really think that is breaking the law? Really? I believe you are mis-interpreting DOT 49 CFR 570.9 in several ways. See Applicability 570.3 Again people this is not as complicated as you are making it out to be. Like I said do what you are comfortable with and I will do the same. If the tire police come after me I will deal with that when it happens.
* This post was
edited 04/06/12 09:35am by tmprkswyo *
FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
I don’t know about property damage to your own trailer but, but if that tire caused injury, death, or significant property damage to another, chances are very good there will be someone investigating everything they can…
Please explain to me why my tire/wheel combination would be a problem when they are matched. My tire/wheel combo exceeds what is required by the trailer which in return provides a larger margin of safety. This is truly not as complicated as it is being made out to be. I don't know how you guys sleep at night. LOL
FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
I don’t know about property damage to your own trailer but, but if that tire caused injury, death, or significant property damage to another, chances are very good there will be someone investigating everything they can…
Please explain to me why my tire/wheel combination would be a problem when they are matched. My tire/wheel combo exceeds what is required by the trailer which in return provides a larger margin of safety. This is truly not as complicated as it is being made out to be. I don't know how you guys sleep at night. LOL
You are reading more into it than what was said…
I wasn’t responding to your tires or wheels, but to the comment made by FE and your reply to his post…
A close friend of mine is a insurance investigator and you would be surprised how hard they work and try to access blame… they pay him very well to do it… so if you tire caused the injury to another they most likely would be making sure you didn’t have a role in that failure…
FastEagle wrote: The maximum load capacity of the tire in the picture is 3520# at 80 psi. Now if that tire was to have an unexplained catastrophic failure while attached to an RV trailer axle rolling down the road at 65 MPH and caused thousands of dollars of damages to the trailer and some hotshot insurance adjuster happened to notice that writing on the side of the tire is over the writing on the rim it just might cause his adjustments to be zero.
I would seriously doubt that any Insurance adjuster would look this far in depth at the ratings on the tire and wheel. What is he going to check next? How much your actual load was in the camper at the time of the blowout? What was the air pressure in the tire at the time of the blowout? Did you exceed the speed rating of the tire? Really? Seriously doubt it. But if you are that nervous about such things then I would make sure everything was within specs and limits.
I don’t know about property damage to your own trailer but, but if that tire caused injury, death, or significant property damage to another, chances are very good there will be someone investigating everything they can…
Please explain to me why my tire/wheel combination would be a problem when they are matched. My tire/wheel combo exceeds what is required by the trailer which in return provides a larger margin of safety. This is truly not as complicated as it is being made out to be. I don't know how you guys sleep at night. LOL
You are reading more into it than what was said…
I wasn’t responding to your tires or wheels, but to the comment made by FE and your reply to his post…
A close friend of mine is a insurance investigator and you would be surprised how hard they work and try to access blame… they pay him very well to do it… so if you tire caused the injury to another they most likely would be making sure you didn’t have a role in that failure…
Fair enough. I have a good friend who is an insurance investigator as well and I am going to quiz him on this topic and see what he says. It seems to me that tire/wheel rating aside there are too many other factors that they could not determine once the tire actually failed. I still stand behind my original opinion on my paticular tire/wheel combination is entirely safe, probably more so than the OEM combination.
My theory is a reputable tire company wouldn't sell, mount, balance, and warrant a tire/wheel combination that could come back and bite them if there is a failure due to mismatched tires, wheels, and or PSI.
2008 Dodge 3500 With a Really Strong Tractor Motor...........
LB, SRW, 4X4, 6-Speed Auto, 3.73, Prodigy P3, Blue Ox Sway Pro........
2007 Komfort 212 on 225 75R 15E Maxxis ST Tires.........
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