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Old 09-23-2016, 02:55 PM   #1
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Thoughts on Tire Pressure

Some of you who've been towing a FW longer than I - I'd appreciate your thoughts.

The Tires on my 2016 F150 are at 36lbs - which is what the door sticker calls for. When I drop the hitch, the back of the truck moves down perhaps an inch - looks good, and the weights are all within limits per my last check at the CAT scale.
But the rear tires look "low" when I drop the trailer. My dealer even commented the first time I hitched up (you need some air in those tires.)

On the tire it says the maximum cold pressure is 45lbs. I assume Ford recommends 36lbs to improve ride?

I've taken several long trips with the FW and the truck tires don't overheat or show any unusual wear. Part of me says, if they aren't getting hot because of flexing, and they aren't wearing the outside tread, then leave them alone. Part of me says - pump them up to 45lbs when towing cause tires shouldn't look like that.

Anybody else have similar issues - where do you run your TV tires?
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Old 09-23-2016, 03:10 PM   #2
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On my 2011 F-150, Ecoboost I used to tow with listed the same tire pressure on the door sticker. However when I was towing I would increase the cold tire PSI up to approx 42 psi and the tires did not have the appearance of looking low and handled towing better in my opinion. I did this for the four years I towed my 26BH with the F-150.
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Old 09-23-2016, 03:10 PM   #3
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The correct answer is to see if you can find a load vs pressure chart for your specific tires. That will tell you that at XXXX load on each tire you should run XXpsi.

Safe bet in the meantime is to max them out. If they are just P rated tires I would pump them up to 45 anytime I was towing.

The 36psi rating is typically for an empty vehicle. Loaded up you need more pressure.

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Old 09-23-2016, 03:12 PM   #4
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I got "schooled" about tire pressure on either this forum or the RV.net forum. I use the door sticker now. However, on my F250 they are very nearly the same. I think the door might say 65 and the tire says 70 on my truck.
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Old 09-23-2016, 04:19 PM   #5
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I was surprised.
My 2002 Dodge 2500 has door stickers of 50 lbs front tire and 80 lbs back tire, and I tow with those pressures. My tires say 80 lbs max.
While I tow a trailer not a fiver, I never would have imagined towing with just 36 lbs in the rear tires. But I have no knowledge of newer trucks, as I always have driven OLD trucks.
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Old 09-23-2016, 05:18 PM   #6
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My door sticker shows a higher PSI for the rears when towing- 44 when towing, 40 when not towing. Doesn't yours show towing pressures?
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Old 09-23-2016, 05:57 PM   #7
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I have P tires on my F150 - The tires say 51 PSI max and that's what I do when I tow my camper. I drop the pressure to about 42 when I'm empty. If I try and hitch up at anything less than the max psi I get the same "Low Air" look you get.
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Old 09-23-2016, 07:03 PM   #8
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SmokerBill - nope, mine only shows one pressure.

But thanks everyone for your feedback. I think I'll try higher pressures next trip.
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Old 09-23-2016, 07:19 PM   #9
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Quote:
Originally Posted by Marcm157 View Post
I have P tires on my F150 - The tires say 51 PSI max and that's what I do when I tow my camper. I drop the pressure to about 42 when I'm empty. If I try and hitch up at anything less than the max psi I get the same "Low Air" look you get.
X2 on my 2010 F150. Except I go 51 in the back and 45 in the front when towing so that the steer axle gets a little more grip on the road. I also installed a set of Timbrens in the back to eliminate rear end squat and sway. The Timbrens are amazing.
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Old 09-23-2016, 07:25 PM   #10
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Quote:
Originally Posted by Mikey View Post
X2 on my 2010 F150. Except I go 51 in the back and 45 in the front when towing so that the steer axle gets a little more grip on the road. I also installed a set of Timbrens in the back to eliminate rear end squat and sway. The Timbrens are amazing.
I may try dropping the fronts the next trip out. I went with Roadmaster Active Suspension instead of Timbrens. It does OK. I was on the fence with airbags but the RAS is doing its job so far.
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