Tire Pressure
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Elder User
Joined: Oct 2007
Posts: 672
Likes: 0
From: NJ
Tire Pressure
Hi all,
I have Hercules Terra Trac A/T 265/75/R16s. I know that if you air them up to 85 psi when running around unloaded, they wear only int he middle. But obviously, the harder they are, the more efficient. I want efficiency, but I don't want to wear my tires out too soon. What is a good psi?
Thanks
I have Hercules Terra Trac A/T 265/75/R16s. I know that if you air them up to 85 psi when running around unloaded, they wear only int he middle. But obviously, the harder they are, the more efficient. I want efficiency, but I don't want to wear my tires out too soon. What is a good psi?
Thanks
Elder User
Joined: Dec 2006
Posts: 718
Likes: 2
From: Chattanooga, TN
I run the same size Michelins (sp?) and run 78 psig in them and the middle two rows do not wear at the same rate as the outer rows. I always have more tread in the middle when I replace the tires. The 78 psig is basically the max. shown on the sidewalls. I always thought the higher pressures forced the middle to balloon out and wear more.
Good luck,
Good luck,
Elder User
Joined: Sep 2007
Posts: 895
Likes: 0
From: Lenhartsville PA
I need to listen to this one! I only run 60psi front and rear., should I be running what the tire says or the sticker on the door? Fuel wise, ride, tire wear? Haul heavy load every now and than!
FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Are your tires ten or eight ply tires?
I have 8 ply 285/70/17's on my truck and i run them at 50 psi currently. Im empty most of the time, and even with 50 psi in all 4 tires, it rides a little rough.
Regarding the door sticker, thats mainly for factory tires. Ford has no way of telling what tires your run on your truck after the onces from the factory wear out. You should always put the pressure that your tire manufacturer reccomends. On the tire they only tell the max tire pressures, and the max tire pressures should only be used while towing or hauling heavy.
You could always do the chalk test, or call up a few tire shops if you want second opinions
I have 8 ply 285/70/17's on my truck and i run them at 50 psi currently. Im empty most of the time, and even with 50 psi in all 4 tires, it rides a little rough.
Regarding the door sticker, thats mainly for factory tires. Ford has no way of telling what tires your run on your truck after the onces from the factory wear out. You should always put the pressure that your tire manufacturer reccomends. On the tire they only tell the max tire pressures, and the max tire pressures should only be used while towing or hauling heavy.
You could always do the chalk test, or call up a few tire shops if you want second opinions
Thread Starter
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Elder User
Joined: Oct 2007
Posts: 672
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From: NJ
My tires are E load, does that mean they're 10 ply? I'm thinking 65 front 60 rear would work for me too.
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FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Yes E rated is ten ply. You can try 65/60. If anything it will ride a little rough. You can always take away, or add more air if needed!
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Senior User
Joined: Mar 2008
Posts: 436
Likes: 1
From: Mass
my e-rated say (MAXpsi-80), so i put 70 in front and back. i always hate to do anything to MAX. feel as if its like the "boiling point" of something. and i like to keep them firmer hoping its getting me optimum mpg.
