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Old 05-02-2014, 06:51 AM   #31
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Originally Posted by jdefeo1 View Post
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.
I did max it out and it does help with a stiffer ride. The stock tires can tow better but still squirm.

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Old 05-02-2014, 07:40 AM   #32
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Originally Posted by f5moab View Post
If you mean the 265x65 18 stock tire size, then they are NOT LT, they are P-rated tires.
From what I have seen, on 1/2 ton pickups, the manufacturers are putting on P-rated tires (at least for GM and Ford and what I have seen on the lots).

However, in 18" tires, you do have a decent chance of finding LT tires, if you want.
I do have P rated tires. Next time I purchase tires I will look for LT. That won't be for a while. I bought the truck 6 months ago as a certified pre-owned and new tires were installed at that time.
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Old 05-02-2014, 07:56 AM   #33
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Having re-read my posts, while I never said they were "dangerous," I can see where I might have given that impression.

"Dangerous" is a subjective term in this context.

The limited load range of most, if not all, P series tires (when adjusted with the 9% reduction to the load range on the tire while towing), makes them "unsuitable" (objective term) for towing near the max rated load of the tow vehicle.

As I stated previously, I would not tow with P rated tires. (Subjective)
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Old 05-02-2014, 08:16 AM   #34
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this may offer some clarity TireSafety.com
Along with the chart showing the difference in tire types http://www.tiresafety.com/sizes/trucks/chart.asp
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Old 05-02-2014, 08:20 AM   #35
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Originally Posted by Sgt. Schultz View Post
this may offer some clarity TireSafety.com
Along with the chart showing the difference in tire types http://www.tiresafety.com/sizes/trucks/chart.asp
The note at the bottom of that chart says it all.

The LARGE majority of SUV and Light Trucks will NEVER tow a thing.
Thus the OEM P series tires.
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Old 05-02-2014, 12:53 PM   #36
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Originally Posted by Herk7769 View Post
The LARGE majority of SUV and Light Trucks will NEVER tow a thing.
Thus the OEM P series tires.
I was thinking the same thing, Herk. I don't personally have any experience towing a trailer that's anywhere near the max. tow rating of my F-150 (11,300#) but I do have several thousand miles experience at, or perhaps slightly over, the max. payload number. With my aftermarket Bridgestone Dueler A/T Revo 2 P275/65R18 tires and an extra leaf spring, it handles the load no problem with no squirminess.
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Old 05-02-2014, 04:27 PM   #37
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I am 9500 lbs with my trailer and cargo on the truck. After earlier this week I can say without a doubt the LT tires dj make a difference. On the same highway commercial hauler towing new RV and 5vers back to Quebec were all over the road with the wind and dry trailers.

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Old 05-03-2014, 08:58 AM   #38
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Thank you for all the great responses to my post. Lots of good insight on this subject. In my situation, I think I will give it a try using my new P-tires and use what was recommended on here. I will put in more air pressure and see how squirmy the feel is. I am only planning on a few camping trips this year. My TW is a regular SUV daily driver, so I would prefer to have a smoother ride 95% of the year. If I were to travel more, I think I would consider the LT tires. There are some responses that say they don't make LT tires for a 17" diameter size, which I may not be able to do. Keep your suggestions coming. I pick up the unit today, so I will post how the ride was when I get back.
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Old 05-03-2014, 02:34 PM   #39
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They make LT tire for 17 inch and 18 inch. II think it is the 20 inch rims that they don't make LT's for.
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Old 05-03-2014, 02:51 PM   #40
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I have LT 285 50 R 20 Michelins on my truck. There is also a TA All Terrain available that I know of. Might be others.
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