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Old 09-17-2014, 05:40 PM   #29
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I decided to stick with the 60 aspect ratio LTX M/S2 P275/60/20 instead of going with the 1"/1+" taller LT 65s on my 2013 RAM 1500 Outdoorsman 2WD. My reasons FYI.

1. The 1 to 1+ inch taller tires would throw the gearing off which would be especially noticeable on grades.

2. Both America's Tire and the Dealer had notes in their system that indicated clearance issues with taller tires on 2013 2WD RAM 1500s.

3. The compact spare (can you believe it?) on the truck would be 1 inch + shorter. Not cool when towing. Can't put a larger spare under the truck.

4. There were a couple of "off-brand LR D and E solutions" ie. Nitto which had less than wonderful reviews and would be hard to come by on-the-road if a replacement were needed.

5. Dealer said that the PCM only contained the OEM tire sizes and that using a 3rd party PCM programmer would void the warranty. Not being able to enter the larger diameter tire in the PCM would mean that the odometer, trailer mileage, trip calculator, fuel range indicator and a host of other features would be off.

6. The Michelin LTX P275/60 R20 M/S2 has an "A" heat rating. The best of any tire that I could find. I've always like them in the rain. My trailer has the XL version. Wish they'd make that in the 20".

So.....maybe this is another good reason to give serious consideration to 3/4 ton TV if you want stellar towing performance. Most 1500s these days are competent towers but have limitations such as tire choices.
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Old 09-17-2014, 05:46 PM   #30
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One other consideration is 17 inch rim. It was offered on the Outdoorsman if you have 4x4. It would open you up to E and D range tires. You can stick with the same size tire but you'd have a smaller rim.

Scanning the forums, there is a clearance issue with the 65's if you have 2wd. I forgot that my 4x4 sits higher than yours in the front.



Obviously the down side is price. But if you have the chrome clads, a lot of guys will pay good money for them, so you could recoupe your costs.

Believe me, I've been thinking about the 17's long and hard.
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Old 09-17-2014, 05:48 PM   #31
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Can someone verify this, is the load range distributed between two tires? I've been thinking this whole time that if a tire is XL and it's 2200lbs load range, than that's 4400lbs per axle.

Or is this wrong?
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Old 09-17-2014, 05:51 PM   #32
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Quote:
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One other consideration is 17 inch rim. It was offered on the Outdoorsman if you have 4x4. It would open you up to E and D range tires. You can stick with the same size tire but you'd have a smaller rim.

Scanning the forums, there is a clearance issue with the 65's if you have 2wd. I forgot that my 4x4 sits higher than yours in the front.



Obviously the down side is price. But if you have the chrome clads, a lot of guys will pay good money for them, so you could recoupe your costs.

Believe me, I've been thinking about the 17's long and hard.
17s were an option however time isn't on my side. The LTX M/S2 P275/60/20 should work fine with the 23D.

Thanks for your input. I've learned a lot here.
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Old 09-17-2014, 07:07 PM   #33
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Quote:
Originally Posted by BoldAdventure View Post
Can someone verify this, is the load range distributed between two tires? I've been thinking this whole time that if a tire is XL and it's 2200lbs load range, than that's 4400lbs per axle.

Or is this wrong?
That is correct.
The load range for LT tires and load index for the P tires are for a single tire. The Yokohama Geolander P275/55R20 117S/XL has a load capacity of 2833lbs, but must be derated 10% for use on a light truck, so its actual capacity would be 2575lbs. So on your RAM that would be 5150lbs. Lots of tire capacity for the RAM 1500 that has axle weight ratings of 3,900lbs.
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Old 09-17-2014, 07:47 PM   #34
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and LT would still have stiffer side walls though. But good to know.
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Old 09-17-2014, 08:19 PM   #35
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I think there would be more squirm while towing in the LT275/65/20. I'll let you know when I hook up my squirm-o-meter
That won't be for a while. I still have to wear out the GoodYears.
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Old 09-19-2014, 04:37 PM   #36
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I think there would be more squirm while towing in the LT275/65/20. I'll let you know when I hook up my squirm-o-meter
That won't be for a while. I still have to wear out the GoodYears.
Same here, when we bought ours she had brand new Wrangler SR-A's put on. I am going to step up, but figure I will wait until we get closer to full time mode. We're also taking a big trip up to Chicago and the Smokie Mountains in Oct, no AS, so might as well use the Good Years up.
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Old 09-19-2014, 05:26 PM   #37
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My Goodyear SR-As were down to 6/32" tread, in 21K miles, 13K towing. The new Michelin LTX M/S 2s are 13/32 ". What a difference in feel.
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Old 09-22-2014, 04:52 AM   #38
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Replaced goodyear 265/60/20 SR-As with Michelin 285/55/20 LTX ATs on my 2500 Chevy Duramax. Same diameter (4 more rpm,s in a mile), 1/2 inch wider, and there is no comparison. Of course you will pay for the better tire. For anyone who has not driven the SR.-A in wet conditions, look out. They are unsafe just thinking about rain.


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Old 09-22-2014, 05:03 AM   #39
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Also, about door jam tire pressures. Look up the "Load/Inflation" chart for your tires. See what the load carrying ability is for the psi listed on the jam. Multiply that times two, and you will probably find that that number is exactly the max load for the axle. In other words, much of the time, that psi just matches the tires with the axle for liability reasons. Claims of tire wear, smooth ride, all baloney.


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Old 09-22-2014, 08:02 PM   #40
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Thumbs up

Just incase anyone cares, I'm talking out loud but....

I found another guy with these rims:


Which I just happen to already have:


Including the same stupid tire. I HATE HATE HATE those Nitto M/T's.

Although the tire in my picture infront of my truck is off my other truck and a 315/70R17

The other guy's Ram is a 275-70-18

I just put my rim's and tires on Craigslist. We love the look of the method's and think I'm going to downsize.

The difference is .07% so I'll be staying about the same size. You can compare for yourself if anyone is interested:275/60-R20 vs 275/70-R18 Tire Comparison - Tire Size Calculator

The Michelin LTX M/S2 comes in this size also!

So, that's my plan. Thought I'd post here incase anyone in the future with a Ram searching for ideas.

Cheers.
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Old 09-23-2014, 03:43 PM   #41
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No, scratch that idea. Talking out loud as always. After much consideration, if I need more truck, I can't take those with me. And right now I've made the commitment to only buy accessories I can take to the next truck. Those wouldn't work on a 2500. Tires only here.
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Old 09-27-2014, 08:26 PM   #42
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The Michelin LTX P275/60 R20 M/S2s are a HUGE improvement over the Goodyear SR-A OEM tires on my 2013 RAM 1500. I did my first 200 mile tow today. They are much stiffer and handle like a champ......straight down the road....no wandering. Much less wind effect. I'm rant that at 44psi@58F.

They are stiff but not nearly as much as the LT load range Es that I had on my Interstate. E's would have created a pretty rough ride.
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