Tire Pressure Question
Cross-Country
Joined: Sep 2006
Posts: 52
Likes: 1
max pressure if your rig weighs 12k
Just wanted to tell you that running the max pressure off the sidewall decreases you contact patch if you do not have max load....I ran 315/70/16D GY wrangler ATS's at 35 psi on my 99 ECSB V10 4X4 for over 50k miles @ 35 psi..Had a good ride, awesome in the snow and still had 1/3 tread left after 8 years.."yes they had to go!" Just picked up an X and ordered 305 dura tracs..I hope I have as good of luck with them.. BTW. The 315's said max pressure of 50psi @ max load of 3000lbs. To need to run them that hard I figure the truck would need to weigh 12k lbs... Just my $.02
Lead Driver
Joined: Oct 2010
Posts: 5,420
Likes: 16
From: Ouray, CO
Depending upon wander or getting 'caught' on pavement seams when changing lanes experiment with your tires. Higher gives better mileage and can also firm up the steering, but make rough roads rougher.i like 60 fr 65 rear on my tires. And have lowered my fr shocks to 1, makes brick roads tiny bit better.
Senior User
Joined: Aug 2006
Posts: 307
Likes: 0
From: Siesta Key, FL
I have the 285 Michelins on mine. I've played with all kinds of tire pressures, but here's what I've found:
Around town / normal driving - F55 / R60 - the upper threshold of a smooth ride.
Long range trips - F65 / R70 - and it's a stiff ride, but perfect for 75-80mph interstate and mileage.
Long range towing and loaded down - F80 / R80 - when empty, a pothole will jar the fillings loose in your teeth.
Around town / normal driving - F55 / R60 - the upper threshold of a smooth ride.
Long range trips - F65 / R70 - and it's a stiff ride, but perfect for 75-80mph interstate and mileage.
Long range towing and loaded down - F80 / R80 - when empty, a pothole will jar the fillings loose in your teeth.
Lead Driver
Joined: Mar 2010
Posts: 5,250
Likes: 11
From: West Virginia
Just wanted to tell you that running the max pressure off the sidewall decreases you contact patch if you do not have max load....I ran 315/70/16D GY wrangler ATS's at 35 psi on my 99 ECSB V10 4X4 for over 50k miles @ 35 psi..Had a good ride, awesome in the snow and still had 1/3 tread left after 8 years.."yes they had to go!" Just picked up an X and ordered 305 dura tracs..I hope I have as good of luck with them.. BTW. The 315's said max pressure of 50psi @ max load of 3000lbs. To need to run them that hard I figure the truck would need to weigh 12k lbs... Just my $.02
fwiw you can't run 315's or 305's on stock rims or anything even close. The stock rims are narrow even for 285's. Tires that wide on stock rims will cause cupping and irregular wear, which will actually decrease contact patch. Also allow sidewall deformation which makes truck feel floaty. Increases risk of hydroplaning, and, finally, you won't have room for snow chains.
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
I have the 285 Michelins on mine. I've played with all kinds of tire pressures, but here's what I've found:
Around town / normal driving - F55 / R60 - the upper threshold of a smooth ride.
Long range trips - F65 / R70 - and it's a stiff ride, but perfect for 75-80mph interstate and mileage.
Long range towing and loaded down - F80 / R80 - when empty, a pothole will jar the fillings loose in your teeth.
Around town / normal driving - F55 / R60 - the upper threshold of a smooth ride.
Long range trips - F65 / R70 - and it's a stiff ride, but perfect for 75-80mph interstate and mileage.
Long range towing and loaded down - F80 / R80 - when empty, a pothole will jar the fillings loose in your teeth.
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
you revived a dead thread to tell people not to run high pressures because it decreases the contact patch?
fwiw you can't run 315's or 305's on stock rims or anything even close. The stock rims are narrow even for 285's. Tires that wide on stock rims will cause cupping and irregular wear, which will actually decrease contact patch. Also allow sidewall deformation which makes truck feel floaty. Increases risk of hydroplaning, and, finally, you won't have room for snow chains.
fwiw you can't run 315's or 305's on stock rims or anything even close. The stock rims are narrow even for 285's. Tires that wide on stock rims will cause cupping and irregular wear, which will actually decrease contact patch. Also allow sidewall deformation which makes truck feel floaty. Increases risk of hydroplaning, and, finally, you won't have room for snow chains.
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Cross-Country
Joined: Sep 2006
Posts: 52
Likes: 1
Yeah bring'em back
Thanks EXv10....I don't get on here much an I wanted to see what most of you guys run for pressures..I searched it out and even found a few that say run what is on the side wall of the tire which is max pressure at max load...If not fully loaded the tire would not performed as designed...Some people do an internet search and belief the 1st thing they see, (electric supercharged on ebay lol) or keep asking until they get the answer they want to believe.
I guess my point is..
Believe nothing that you hear and half of what you see..
I guess my point is..
Believe nothing that you hear and half of what you see..
Lead Driver
Joined: Mar 2010
Posts: 5,250
Likes: 11
From: West Virginia
acceptable rim width for a 285/85/16 is 7.5-9. Stock excursion rim width is 7." Many guys run them... I have a set on now... you can definitely feel the added sidewall deformation. It should be fine, but its definitely the widest tire I'd run on a stock wheel. Here is info on the tires from tire rack:
BFGoodrich All-Terrain T/A KO
BFGoodrich All-Terrain T/A KO
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
Thanks EXv10....I don't get on here much an I wanted to see what most of you guys run for pressures..I searched it out and even found a few that say run what is on the side wall of the tire which is max pressure at max load...If not fully loaded the tire would not performed as designed...Some people do an internet search and belief the 1st thing they see, (electric supercharged on ebay lol) or keep asking until they get the answer they want to believe.
I guess my point is..
Believe nothing that you hear and half of what you see..
I guess my point is..
Believe nothing that you hear and half of what you see..
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