TonyInPa
Waterford, Pa
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Joined: 06/04/2009
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My truck manufacture'sr specs call for P tires on my truck.
A friend, who doesn't really tow much, said I definitely should use LT tires.
Am I O.K. towing with P tires?
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BillyW
North ID
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Joined: 10/08/2003
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You haven't provided very much info, but I'll say if the truck manufacturer specs call for P-rated, you should be OK. If you tow often, the tires will probably wear quicker than their LT counter parts and they will very likely be less stable, depending on the weight/load. I recently went back to P rated tires from LTs on my half ton. The ones I got are comparably rated to 6 ply LT tires and I expect them to perform fine.
I will air my tires up to their max 44psi when I tow, which will help with stability and keep them running cooler.
'97 F150 4X4
'04 Pioneer 18T6
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BIG ALEX
ALBUQUERQUE,NM
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IT DEPENDS ON HOW MUCH WEIGHT YOU ARE CARING. LT TIRES COME IN DIFFERANT LOAD RANGE FROM 6PLY 8PLY OR 10PLY. P TIRES ARE JUST 4PLY
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kmbelt
Owensboro,Ky
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Joined: 09/11/2009
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what is your vehicle and what are you towing.
I went from p to LT tires on my last truck which was a half ton. Towed MUCH better. gave up some of the ride comfort when not towing, but i thought it was worth it.
2008 GMC Sierra 2500HD Duramax CC 4x4
2010 Puma 259RBSS
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ScottG
Bothell Wa.
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If you tow then I would use LT's.
Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
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Atlee
Mechanicsville, VA
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BIG ALEX wrote:IT DEPENDS ON HOW MUCH WEIGHT YOU ARE CARING. LT TIRES COME IN DIFFERANT LOAD RANGE FROM 6PLY 8PLY OR 10PLY. P TIRES ARE JUST 4PLY
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downtheroad
Pacific Northwest
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Joined: 02/18/2003
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Don't know what you are driving....but when we had an Expediton..it came with P rated tires. I replaced them with LT's.
It was noticeably more stable when towing and it really didn't change the ride comfort level.
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Desert Captain
Tucson
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My F-150 came with P's (bought it used), and when they wore out I switched to E rated LT's (Michelin M/s 2's). Our TT is just 4600# loaded but the improvement in towing was impressive. The stiffer sidewalls (12 Ply vs 3 or 4 ply), increased stability and dramatically improved the ride. You will pay a slight fuel tax as these tires are a little heavier, my best guess is that they cost me about .3 mpg which I am happy to pay. As far as the LT's giving a stiffer ride it has not been an issue. I tow with the rears at about 60 to 65 and the front at 60, non towing I run all four at 50 and the ride is very smooth (these are strictly street tires, not all terrain's). If you tow, get a set of LT's, you will be amazed at what a difference they make. 
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skipnchar
Topeka or somewhere else
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Joined: 12/17/2003
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OEM tires are ok for towing as they are required (by law) to be capable of handling the GVWR or your truck. That being said, LT tires have stiffer side walls and will be more stable than passenger tires. You don't NEED truck tires but it will ad a certain amount of stability to the towing platform. A load range C would be sufficient, D would be better but you have few tire options in a D load range and an E would be overkill but OK if you don't mind the harsher ride.
Truck tires or passenger tires (if they're radials and most run radials) do not actually HAVE plys. LT tires are 6 ply RATED and 8 ply RATED and 10 ply RATED and passenger tires to not rate by plys, just the weight.
Good luck / Skip
2011 F-150 HD Ecoboost 3.5 V6. 2550 payload, 17,100 GCVWR -
2004 F-150 HD (Traded after 80,000 towing miles)
2007 Rockwood 8314SS 34' travel trailer
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TonyInPa
Waterford, Pa
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Joined: 06/04/2009
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Thanks for all your advice.
Details:
2007 Tundra TRD Off Road. 5.7 l
KZ Spree fifth-wheel. I think 28 feet. 5,800 pounds dry weight.
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