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Old 10-19-2016, 04:18 PM   #1
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SUV Tires - P or LT rated?

Hey folks thanks in advance for your help.

I have an '04 Ford Expedition that I use to tow my 19' TT Ultralite with an empty weight of about 3800lbs. The TV came with P rated tires in the 265/70R17 flavor. I'm in need of tire replacement and would like some advice on whether you think the LT would be a bad choice on an SUV vs the P rated.

I'm looking at the Michelin Defender LTX M/S. The price difference for my tire size is negligible and the availability is the same for both, however the treadwear warranty is 70k (P) vs 50k (LT). We don't camp nearly as much as i'd like but probably 1/2 dozen times a year. The rest of the time the SUV is used once a week for trip to town about 50 miles round-trip.

Does it make sense to go with the LT vs the P on the tires assuming price and availability is about the same? I don't know much about the difference other than the load limits are higher and the sidewalls a bit sturdier on the LT.

Specs:
P - 265 /70 R17 115T SL OWL
LT - LT265 /70 R17 121R E1 OWL

Thoughts?
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Old 10-19-2016, 04:22 PM   #2
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Go with LT tires. Stiffer aidewalls will inprove handling. Ride will suffer a bit.
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Old 10-19-2016, 04:44 PM   #3
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Given that you drive the Expedition so little when not towing the stiffer ride of the LT's may not be an issue and the LT's will likely improve your towing experience.

As for the warranty how long do you figure it will take you to rack up 50K miles?
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Old 10-19-2016, 04:50 PM   #4
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We had a 1993 Ford Exploder with the original Firestone bombs. We had 3 flats in 8 days when we arrived in Kodiak, Alaska. The tires were cut to pieces by the sharp rock on the gravel roads there. At the recommendation of everybody, we put on 8 ply LT tires. Never had another flat in the 3 years in Alaska, and 4 years in California, including the 5,000+ mile drive to California.

In California, when they finally wore out 60,000 miles later, Costco and Sears would not replace with LT tires because they were not the OEM size. I finally found a tire dealer that would put on LT tires, and got another 70K before I traded the Explorer in. Color me very happy with the LT tires.

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Old 10-19-2016, 07:54 PM   #5
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I run XL rated P tires on mine. It lets me run at stock inflation without a rough ride for daily driving and I run around 45 PSI when towing to stiffen them up. Makes a lot of difference.
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Old 10-19-2016, 08:03 PM   #6
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LTs for sure. The factories should be ashamed of themselves ever mounting P-rated tires on any truck or truck-based SUV. You'll be glad you upgraded.
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Old 10-19-2016, 09:22 PM   #7
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Quote:
Originally Posted by Ford Idaho View Post
As for the warranty how long do you figure it will take you to rack up 50K miles?
I do about 5000 miles a year or so when you add in the camping trips. I'm not too concerned about the treadwear warranty difference, just pointing it out. The OEM tires (continental contitrac SUV) both sets since the vehicle was new have separated and blown long before the tread was nearing the end of its useful life. Seems to me they last about 5-6 years before having to replace them when the belts begin separating.

Is this a function of the tire and its quality or should I expect that due to the amount of time they sit vs roll?
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Old 10-19-2016, 09:31 PM   #8
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Quote:
Originally Posted by foretm View Post
I do about 5000 miles a year or so when you add in the camping trips. I'm not too concerned about the treadwear warranty difference, just pointing it out. The OEM tires (continental contitrac SUV) both sets since the vehicle was new have separated and blown long before the tread was nearing the end of its useful life. Seems to me they last about 5-6 years before having to replace them when the belts begin separating.

Is this a function of the tire and its quality or should I expect that due to the amount of time they sit vs roll?
Sitting time. I have had LT tires on my dually that looked brand new but were pushing 8 years old, rolled the tread on two of them. From my research 8 years seems to be about the average for longevity, air pressure, where it was stored, temps and speed rating play into that too.

Aaron
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Old 10-20-2016, 02:34 PM   #9
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You will be much happier towing with the LT tires. After 2 weeks you will not notice any ride difference. The only complaint I've heard from those that switch is about road noise because they bought an aggressive tread as if they were going through the mud to get to rock climbing.
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Old 10-20-2016, 02:42 PM   #10
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I just put these on my 2013 Silverado and am very happy with them

https://www.amazon.com/gp/product/B00WIV1VZM/

Nokians get great reviews, and I saved a ton of money ordering them online.
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