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Old 07-16-2016, 07:36 AM   #1
Coachman 312BHDS
 
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Tires for a 2014 F150 Lariat 3.5V6 Eco Max Tow

We bought a new 2016 Coachman 312 BHDS Liberty Edition and a 2014 Ford F150 Lariat setup for max tow with the 3.73 rear-end earlier this year. Someone put 7500 miles on the Lariat in 13 months and just had to have a new one. It appears the hitch was never even used.

Anyways, it pulls the trailer loaded really well and we have about 1200 miles towing with much of it even in the Ozark mountains. I tweaked slightly on the Husky centerline WDH and it sits level and is steady as a rock on the interstate at 60-65 mph. It even does ok in crosswinds.

I have been reading threads on this forum and keep seeing a reference to using "LT tires" on the trucks. I am not exactly sure what they are referring too. Our Lariat came with the stock Wranglers and at this mileage (now 10k) I didn't plan on changing them yet. Any help is appreciated.
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Old 07-16-2016, 01:15 PM   #2
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LT tires are light truck tires and have a higher load/weight rating than P rated tires.

I had Load Range E Michelin LT tires on my F150. Towed so much better than P (passenger) rated tires but at expense of slightly stiffer ride when not towing.
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Old 07-16-2016, 01:37 PM   #3
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Thanks. I see the difference. It seems to tow well now but is it safe until I upgrade them? There are only 10k miles on the truck and tires but I read a lot of folks get rid of these Wranglers by 20k anyways.

P275/65R18
Tire Size P275/65R18
Product Code 183538418
Speed Rating T
Load Index114
Load Range SL
SidewallOutlined Letters
Uniform Tire Quality Grade (UTQG)500/A/B
Max Load (lbs) 2,601
Max Inflation Pressure (PSI) 44

Approved Rim Width (in.)7.5 - 9.5
Measured Rim Width (in.)8.0
Section Width (in.)11.0
Tread Depth (in 32nds)13
Outside Diameter (in.)32.1
Revs Per Mile 651
Price $212.00

LT275/65R18

Tire SizeLT275/65R18
Product Code179029492
Speed RatingQ
Load Index 123
Load Range E
SidewallOutlined Letters
Uniform Tire Quality Grade (UTQG)
Max Load (lbs) 3,415
Max Inflation Pressure (PSI) 80

Approved Rim Width (in.)7.5 - 9.0
Measured Rim Width (in.)8.0
Section Width (in.)11.0
Tread Depth (in 32nds)14
Outside Diameter (in.)32.1
Revs Per Mile 651
Price $255.00
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Old 07-16-2016, 01:39 PM   #4
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Load range e Toyo open country at, my most favorite tires ever

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Old 07-16-2016, 01:57 PM   #5
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Now my question is - It seems to tow well now but is it safe until I upgrade them? I do see a lot of complaints about a stiff ride with the E's. The Toyo's are reasonable.
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Old 07-16-2016, 09:26 PM   #6
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Your tires are rated at about 2400 per tire. 4800 capacity on a 4000 lb axle sounds safe to me. A handful of people upgrade their F150 tires to LT E rated. When was the last time you saw an F150 with a flat on the side of the road? Buy a TPMS for the trailer tires (if you don't have one already) before spending money on new truck tires. Trailer tires have flats way more often than truck tires, even if they are P rated. All that being said I would upgrade to a LT C rated tire when you are ready since you are towing heavy. Even the heavy duty payload F150 comes with C rated LT tires now instead of E rated.


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Old 07-16-2016, 09:42 PM   #7
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Like this one? Can even do the spare. What is a best bang for the buck one?

https://www.amazon.com/6-Tire-Flow-T...s=tpms+systems
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Old 07-16-2016, 09:42 PM   #8
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Load e.

Takes the squishy out of the truck when towing.


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Old 07-16-2016, 10:07 PM   #9
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These seem to well rated on this and other RV forums. Yes - definitely at least a C load rating on the next set of tires.

https://www.amazon.com/Truck-System-...t_sims?ie=UTF8
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Old 07-17-2016, 03:18 PM   #10
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LTs are tougher

I was driving my Jeep Liberty on gravel roads, and driving faster than most (27 years in the Forest Service). I had a flat every two weeks. After I upgraded to LT (Light Truck) tires, I haven't had a flat in 8 years. If you're not overloaded, your P (for Passenger Car) rated tires will probably do fine. They are lighter, so you'll get better mileage and they'll last longer.

The tires you probably want to upgrade are your trailer tires. Mine were C rated, and 7 years old when I bought my ROO. I had 2 blowouts in 4 trips. I upgraded to Load Range D, and Speed Rating M (81 mph). I believe I have solved that problem. Most trailer tires are rated for 65 mph. But if it is hot, and they are near max load, you can't drive that speed without blowouts.

My load Range D tires are rated at about 1930 lbs. with dual axle. Your rig weighs around 7000 lbs. empty, and up to 10,000 loaded. I'm guessing when you load water, propane, and gear, you're over the rating for a Load Range D tire. A blowout on a traier, can cause a lot of damage. That's why everyone recommends a Tire Pressure Sensor system. It is on my list. Look for ST tires that are speed rated M.
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Old 07-17-2016, 03:29 PM   #11
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I run load range E on my trucks (3) because around here its easy to put a rock thru the tread E's hold up better for off road Idaho. If you truck is handling well pulling the trailer and you are within your weight limit of your tires use what you have until they need changing and then go to E rated. I would also recommend a TPMS system I have the 507 RV unit and really like it.
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Old 07-17-2016, 03:43 PM   #12
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You can always just pump up the existing jello balls to 40 or 44 lbs max when towing. That what I did and it towed better without that roll and bounce. I just now replaced the Goodyears with the new Michelin defender ltx ms for a big trip out west with the trailer. A little harsher but should tow nice.
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Old 07-17-2016, 04:36 PM   #13
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I bought cooper 10 ply e rated HT3's and they tow great.
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Old 07-17-2016, 04:41 PM   #14
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Same 150, but 2011

I upgraded at 80,000km to Michelin LTX M/S2. LT275/65R18 tires and have been very happy.. shhhhh, according to the charts my 5ver is over weight for my truck, but I have pulled over 35,000km in the past 5 years. By the way I added a set of air bags on the rear suspension to also reduce the bounce as I go over bumps.
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Old 07-17-2016, 05:17 PM   #15
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Quote:
Originally Posted by rlocicero View Post
I bought cooper 10 ply e rated HT3's and they tow great.
Cooper is a USA made tire I use their other brand Master Craft also E rated.
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Old 07-17-2016, 06:33 PM   #16
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I agree with others that the LR-E tires are a better choice than the stock P tires for towing heavier trailers. I only upgraded to the LT tires when my P tires were due for replacement because the P tires seemed to be performing OK. I didn't notice a dramatic difference in towing stability or non-towing harshness in my case but it definitely doesn't hurt to have the extra safety factor of the heavier sidewalls. I would recommend an "all terrain" tread as well. For my next set I'll be going back to Bridgestone Dueller A/T Revo 2 tires but the LT tires rather than P. I never purposely drive off road but the Bridgestone's A/T tread does better in wet grass, mud and snow than my current Michelin tires.
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Old 07-17-2016, 06:58 PM   #17
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I have hauled a Windjammer approx. 13K miles using the P rated tires on my F150.
No problems at all.
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Old 07-17-2016, 07:00 PM   #18
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Yes. I plan on upgrading both a bit early with the better tires but I will focus on the TPMS for now. Are the pressure monitors subject to theft as well or do they lock on somehow?
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Old 07-18-2016, 12:41 PM   #19
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As long as your towing experience is fine, wait until they are worn out before new tires. Even when you get load rated E tires, keep the same size. Larger tires and wheels cut mileage, decrease payload, and reduce mechanical efficiency.
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