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Old 04-10-2015, 02:37 PM   #1
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Tire Pressure Question

Ok so I set all 4 Pirelli Scorpion tires to their max 44psi, and all 4 trailer tires to their max 65. Is this safe to ride on all the time, and does anyone drop their tuck tires down to 35 so the ride is not so stiff?

I do not want to be pumping my truck tires up and down every time I go out, so just curious what everyone else is doing, also do you run max psi on truck and trailer while towing
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Old 04-10-2015, 02:41 PM   #2
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Ok so I set all 4 Pirelli Scorpion tires to their max 44psi, and all 4 trailer tires to their max 65. Is this safe to ride on all the time, and does anyone drop their tuck tires down to 35 so the ride is not so stiff?

I do not want to be pumping my truck tires up and down every time I go out, so just curious what everyone else is doing, also do you run max psi on truck and trailer while towing
I raise and lower my truck tires, not a big thing as it is parked close to the garage and I have an air hose reel that reaches very easily.
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Old 04-10-2015, 02:58 PM   #3
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I raise and lower my truck tires, not a big thing as it is parked close to the garage and I have an air hose reel that reaches very easily.
Ok, same for me, I have a compressor and right near garage as well, however OC do you pump up everything to Max pressure? regardless of load or driving distance. I am heading to Virginia from NJ tomorrow and I want a smooth ride not a white knuckle nightmare
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Old 04-10-2015, 03:22 PM   #4
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When I tow the 5er, the front truck tires go to 60#, rear tires to 65#, trailer tires to 65#. Truck tires are rated to 80#, but I don't fill to that.

When not towing the 5er, front truck tires 35#, rear 30#.
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Old 04-10-2015, 08:05 PM   #5
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I do the same, raise when towing, lower when not towing. Unless I am going to go out in a day or two.
Trailer tires I keep pretty much at maximum (but I don't run actual trailer tires).
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Old 04-10-2015, 08:35 PM   #6
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My door sticker says 60 psi front and 80 psi rear. That's what I run all the time and it rides like a Cadillac. If I drop the pressure my factory TPMS warning on the instrument panel goes off, showing all my tires and their pressures with the tire(s) that is low in red. It also will say Low pressure inflate to 60 if it's a front tire or 80 if its the rear. So I really have no option to run a lower psi. Unless there some setting somewhere that can be change to a lower psi setting to keep the warnings from go off.
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Old 04-11-2015, 09:13 AM   #7
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I inflate my tires on my truck to support the load as required by the tire manufactures air inflation table for the tires. This way the air pressure is correct and the tires are not over inflated or under inflated which will cause tires to wear prematurely.

I also have TPMS on my truck and I live on the wild side. There are no sensors installed in the wheel and tires; I know how to read a tire inflation gage.
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Old 04-11-2015, 09:48 AM   #8
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Whatever the door jam says is what they should be at. Back in the day, it was believed to be better. These days, vehicles are designed to and built around a certain tire pressure for all modes, towing or not. You should never have to fill tires to their marked max PSI. It's there just for safety information, not to test the limits. For a trailer, I can't say. I don't even know what is Recomended, but I think it's time to look.
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Old 04-11-2015, 09:58 AM   #9
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I leave my truck tires alone. They where installed by a Michelin dealer, They used the door jam tag for pressure from Ford. I must have between 17000 and 20000 miles on them easy. Still look like new they are also 10 ply. I had a terrible ride before, and Turbs told me what shocks I needed I put them on and now with the same pressure my wife isn't being bounced around, made a 100% difference. My wife still thanks him evertime we go somewhere. Same tire pressure just a smooth ride or at least as smooth as you going to get with a F-250. A 1640 lb pin weight is not much for a F250.
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Old 04-11-2015, 10:11 AM   #10
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I keep the rear tires on the truck to the max 80 psi. Front I keep at about 65 psi. Trailer tires I keep at the max also 80 psi for me. I little tip I learned on winter storage of the trailer is to inflate 10 psi over the max. It prevents under inflation during cold months without having to constantly check them.
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