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Old 05-01-2014, 01:39 PM   #21
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I just recently switched from the OEM P rated tires to Michelin LTX MS/2 LT load range E. The difference in ride quality and handling is huge. Before the switch, I was considering airbags or a helper spring because of the 'squishy' feeling. It turned out that it was the tires, not the suspension. Even with the P rated tires aired all the way up to max sidewall pressure (44 psi), I couldn't get rid of the wallow. The LTs at 45 psi are nice and stiff, and when I'm not towing it's like riding on rails. The ride is a little rougher, but who cares? It's a TRUCK, not a Cadillac.
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Old 05-01-2014, 01:47 PM   #22
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.

Does the F150 with the max. towing package come from the factory with LT tires or P? I bought it used and it had the current aftermarket tires on it. The previous owner towed a small 5er because it has the rails mounted in the bed.

If I were towing a 5er, I'd probably want LT tires, but for towing my Roo the P-rated tires seem to work just fine. When they are due to be replaced, I'll consider LT tires if they are available in my size, but I'd only switch if there isn't huge difference in price. What does it typically cost to upgrade from a P-rated tire to a LT-rated tire for the same size tire?
Maxtow comes with P-rated unless you spec the LT tires. Only the HD payload comes with LT tires as stock.

LT wood cost more, but the difference is not huge.
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Old 05-01-2014, 02:07 PM   #23
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This thread has me curious now. I have a 2012 Silverado 1500 Crew Cab. The tires on it are Firestone Destination LE tires. I'm trying to figure out if the LE is in between P & LT or something else. Load rating is 2469 per tire and max pressure of 44 psi. I am pulling an Avenger ATI 27bbs. Tongue wt over 600 lbs & TT weight just under 8000 lbs. I don't have any problems with my tires while towing so I think I am fine with them.

Does anyone have any insight?
44 PSI is the "give away." They are P tire equivalents.

LT tires come in load range C - 50 PSI; Load Range D - 65 PSI; Load Range E - 80 PSI; etc...
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Old 05-01-2014, 05:43 PM   #24
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Talking

Then there are some Euro metric such as Yokohama A-T/S, 215x70 15, SL rated with a maxx pressure of 51 psi.

But it appears this subject is just like trailer tires vs. non-trailer tires, or Chevy vs. Ford vs. Dodge vs. Toyota, etc. No one is wrong, no one is correct it all depends on the particular circumstances of each application.
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Old 05-01-2014, 06:04 PM   #25
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Any brand P tire just does not have the stiff sidewall of LT tires which is the crux of the matter.
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Old 05-01-2014, 06:17 PM   #26
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I agree, P-rated tires do not have as stiff of a sidewall as a LT tire (or even an XL tire); however, there are people on here implying it is dangerous to tow a trailer with P-rated tires, and that is not correct in all circumstances.
There are thousands of people towing with P-rated tires with no concerns at all. Just because someone has it in their mind that they will only tow with LT tires...great. But don't try and tell me it is dangerous for me to tow my trailer; it isn't.
And I guess there is NO more for me to say in regard to this subject; so I'll move on. I have no desire to change anyone's mind, since I don't give a darn...
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Old 05-01-2014, 06:42 PM   #27
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Any brand P tire just does not have the stiff sidewall of LT tires which is the crux of the matter.
Agreed. P does not have the sidewall strength of an LT, just like gas doesn't have the torgue of a diesel, and a half ton doesn't have the cargo carrying capability of a 3/4 ton, yet they both have a place in towing. :*)

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Old 05-02-2014, 06:42 AM   #28
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I have a ? I have a F 150 with max tow pak. with p 275 65 R18 tires with a 44psi max inflation should I max it out for towing or run the 35 psi recommended on the door pillar .I do notice some squirminess would this help Thanks for any advice.
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Old 05-02-2014, 06:48 AM   #29
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As long as you are using any tire with a P rating, you will have a squirmy feeling on the rear end. They will no doubt carry the load, but in an emergency situation like having to swerve to miss something, they could possibly aggravate the situation. LT LR D or LR E tires have a much stiffer sidewall and require a higher air pressure and eliminates the rear end squirm. JMO.
X2 Towed this week in a 40 mph wind off the right side with gusts to 60. 18 Wheelers dog tracking down the road type wind. With the new LT tires the truck stuck on the road.
Nothing to do with weight capacity but stiffer side walls and no squirm. We traded a trailer partially to do with P series tires not knowing any better at first (we also didn't really like the layout either).

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Old 05-02-2014, 06:49 AM   #30
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Originally Posted by ddemme View Post
I just recently switched from the OEM P rated tires to Michelin LTX MS/2 LT load range E. The difference in ride quality and handling is huge. Before the switch, I was considering airbags or a helper spring because of the 'squishy' feeling. It turned out that it was the tires, not the suspension. Even with the P rated tires aired all the way up to max sidewall pressure (44 psi), I couldn't get rid of the wallow. The LTs at 45 psi are nice and stiff, and when I'm not towing it's like riding on rails. The ride is a little rougher, but who cares? It's a TRUCK, not a Cadillac.
X2 Agreed!
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