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Old 01-27-2013, 06:27 PM   #1
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Tires and Towing, Ordering F-150

I'm getting ready to order an F150 Ecoboost in the next couple of days. With max tow package on a Lariat I can with go with the standard P Metric tires (275/65-18) or go for the optional LT tires in the same size. From what I can tell, the optional LT's have a load range C. I'm thinking about just going with the cheaper p metrics and changing them out when I get them to a better tire in a higher load range.

I'm thinking the sidewalls with the LTs should be a bit stiffer and more stable as a tow vehicle.

My other option is going with the 20" wheels and tires. There would be less sidewall flex and therefore I would think it would be more stable towing (but poorer for trails and off road travel). The 20's are not available from Ford or others in an LT version, only P metric.

With pushing this truck close to max on payload capacity, my main concern is with tires. Any great insights on all of this from others would be appreciated (other then the obvious of jumping up to a 3/4 ton TV).
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Old 01-27-2013, 06:38 PM   #2
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LT of course. P rated only good for driving empty and want the softest ride.
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Old 01-27-2013, 07:22 PM   #3
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Yup, will end up with LT's one way or another. Just need to really decide if I'm ok with factory optional LT's or what to go with something else.
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Old 01-27-2013, 08:14 PM   #4
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Actually, when I looked at the F150's, they were equipped with P-metric, but in XL load range, (44lbs air pressure) and the XL's will actually carry more weight than a C rated LT tire.

With that said, I had a GMC with the XL 20's, also 44 psi, and I loved them on the truck, but was only towing a 23'. They did an excellent job with great stability.
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Old 01-27-2013, 08:29 PM   #5
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Mine came with the Pirelli P-20's too. They have been fine after 14,000 miles of towing and 30,000 miles total, I just pump them up to max pressure, 44lbs instead of suggested 35lbs. However will switch them out to a better all terrain LT or XL tire when they reach their life span pretty soon!
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Old 01-27-2013, 08:58 PM   #6
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I changed the factory P-rated tires on my '06 Tundra that I had, to XL tires. The difference in side-to-side stability when towing was noticeable and remarkable. The ride was rougher, something to think about as roadways are becoming increasing poor.

We have factory 20" P-rated tires with low sidewall on the new Ram and the side-to-side stability is very good (at max sidewall pressure they don't ride like silk either). But that might be a good route if the weight capacity is not lowered.

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Old 01-27-2013, 09:40 PM   #7
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hey Headwest check with Ford about the rear axle ratio. several owners on the F150 forum that tow are saying to forgo the traditional 3:73 or 4:10 axle as the engine has enough torque and they keep the echo boost in boost mode burning more fuel. They are recommending the 3:55.

my '09 150 has the original tires still and are load range d p metric.
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Old 01-27-2013, 11:38 PM   #8
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Did you say 3/4 .... hmmmm....
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Old 01-28-2013, 08:37 AM   #9
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OK. I have to correct some things about tires:

First, P metric tires only come in Standard Load (SL) and Extra Load (XL). They do NOT come in Load Ranges (C, D, etc). LT tires only come in load ranges.

If a P metric tire says 44 psi max on the sidewall, it is a Standard Load tire. If it were an Extra Load (XL) it would say either 41 psi, or 50 psi.

When dealing with load carrying capacity, a P metric is derated by a factor of 1.1 when used on a pickup truck (trailers, too!). LT tires are designed for trucks, so their load carrying capacity is stated as is for truck (and trailer) usage.
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Old 01-28-2013, 10:17 AM   #10
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Load capacities are printed on the side wall.Got to the dealership and look at the vehicles in inventory and compare the tires you are interested in.Unless someone at the dealership can look it up for you.I had 20 pirellli scorpions and liked them they had a high load carrying capacity and rode well.If you order HD payload package you get E rated tires.
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Old 01-28-2013, 10:25 AM   #11
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My F150 came equipped with 20" Pirelli Scorpions. Handling with my 31 ft. was terrible. Changed tires to Yokohama Parada 20" load capacity 2833 lb. ea. made all the difference in the world.
Just installed new Axis axles with 16" wheels and Michelin LT tires. Towing is now sweet.
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Old 01-28-2013, 10:37 AM   #12
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Thats odd I ran 30000 miles before I traded mine off for larger tow vehicle.Tires on mine were still 30% tread remaining.I did bump the air pressure when towing to max psi stated on sidewall.Rotated every 7500 miles.But maybe I just got some good ones who knows.........
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Old 01-28-2013, 10:40 AM   #13
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Quote:
First, P metric tires only come in Standard Load (SL) and Extra Load (XL). They do NOT come in Load Ranges (C, D, etc). LT tires only come in load ranges.
oops. Ok, Load Range not P Metric, thanks.
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Old 01-28-2013, 03:59 PM   #14
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Originally Posted by rodsterinfl View Post
hey Headwest check with Ford about the rear axle ratio. several owners on the F150 forum that tow are saying to forgo the traditional 3:73 or 4:10 axle as the engine has enough torque and they keep the echo boost in boost mode burning more fuel. They are recommending the 3:55.

my '09 150 has the original tires still and are load range d p metric.
From what I'm seeing it sure sounds like the 3:55 is the way to go. However, Ford won't do it with the max tow package, only the 3:73.
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