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Tool Talk Discussion Forum

OT Tire Question

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Pitch

08-11-2003 02:39:34




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The truck tire post down below got me wondering about this , maybe someone here can answer What does the LT rating really mean? I put 235/70/15 LTs on the rear of my 2wd half ton bout a month or so later I replaced the fronts The rears are a really aggresive Mud & Snow so I needed something different for the front. I found a BF Goodrich "commercial" tire in the same size but it had a P rating contrustion as far as sidewall and tread ply was the same but the "commercial" tire has a heavier load rating than the LT's Both tires are the same manufacturer. One tire guy I spoke to said that the LT designation was pretty much a feel good marketing ploy so that folks could say that their pickumup had real truck tires on it. Does any one have the real scoop?

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CNKS

08-11-2003 17:57:33




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 Re: OT Tire Question in reply to Pitch, 08-11-2003 02:39:34  
LT's are rated as C, D, and E, usually, meaning 6, 8, and 10 ply rating. P metrics are similar to the old 4 ply tire. P stands for passenger. C's have a max air pressure of 50 psi, E's 80 psi, don't remember D's.



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Larry in CO

08-11-2003 18:03:37




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 Re: Re: OT Tire Question in reply to CNKS, 08-11-2003 17:57:33  
I think D rated tires have a max air pressure of 60 or 65 lbs. Larry



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Larry in CO

08-11-2003 15:21:58




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 Re: OT Tire Question in reply to Pitch, 08-11-2003 02:39:34  
To me the LT rating has a real good "feel good" to it. When I bought my 3/4 ton Chevy, someone had put P245/75x16 tires on it. The max air pressure for these tires was 35 lbs. Trying to haul a load or pull a heavy trailer with those tires was a real adventure. The sidewalls were so flexible that it was all I could do to keep the truck between the ditches. I replaced them with LT245/75x16 load range E tires. The load rating on these was about the same as the P tires, but the max air pressure is 80 lbs. The sidewalls are so much stiffer that there is no sway at all now. Hope this clarifies this a bit for you. Larry

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Brokenwrench

08-11-2003 14:45:02




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 Re: OT Tire Question in reply to Pitch, 08-11-2003 02:39:34  
LT>light truck, usually a heavier ply/construction for light truck use,has heavier load rating P>passenger car use, not recomended for heavy loading,heavy trailering



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Pitch

08-11-2003 16:03:31




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 Re: Re: OT Tire Question in reply to Brokenwrench, 08-11-2003 14:45:02  
Ok I just went out and looked the rear LT's are 4 ply tread and 3 sidewall with a max load of 1985 at 50# the front P rated are also 4 and 3 with a max of 2183 at 41# but they are labeled as extra load. So it seems to me that these P rated are much heavier duty tires.



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Trevor

08-12-2003 05:32:11




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 Re: Re: Re: OT Tire Question in reply to Pitch, 08-11-2003 16:03:31  
Pitch,

I think what the other guys are saying is correct. But when you bought a high quality commercial grade tire it was better than the LTs on the rear. In "general" terms an LT rated tire will have better load handling capability.

Tire marking is not as controled as it maybe should be. For instance there is no criteria for a company to meet to put Mud and Snow on their tire. The only things that are government controlled are speed and load ratings.

In short go by the load rating. Personally I would only by a D or E rated tire for the rear of a pick up. That way your tires will never be an issue. I also would never buy a cheap brand of tire for a 3/4 ton truck, stick to the BFGoodrich and you will not have a problem.

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Dennis

08-11-2003 16:26:21




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 Re: Re: Re: OT Tire Question in reply to Pitch, 08-11-2003 16:03:31  
I think that the designation of LT includes another 3/32 inch of tread depth.



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