tire pressure question.
12-27-2015, 12:58 PM
#1
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tire pressure question.
I have a a 01 screw 4x4 stock tires is 265/70/17 I run 33x12.5/17 mastercraft courser ct. Factory tire pressure recommends 30 psi in front and 35 in back. My tire say max of 50 psi. What should I run in my tires I don't do much hauling or towing mostly just daily driving
12-27-2015, 03:10 PM
#2
The proper tire pressure is the pressure that puts the entire tread on the pavement.
Lighter tires will balloon out and lift outer tread off with less pressure than E range 10 ply.
My D range bfg AT started that at about 40. My E range tires now have total tread contact at 50. D range 8 ply definitely gsve better mileage. Wish more lt2857017 came in D. range
Lighter tires will balloon out and lift outer tread off with less pressure than E range 10 ply.
My D range bfg AT started that at about 40. My E range tires now have total tread contact at 50. D range 8 ply definitely gsve better mileage. Wish more lt2857017 came in D. range
12-27-2015, 03:38 PM
#5
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I used to have a set of load range E tires that said max PSI was 50, not knowing if I should stick with the 35 my DDJ says or the 50 the tire says, I went to a tire shop and they put 50 in. That wore the centers out REALLY fast. Now I just stick with what the DDJ says and I haven't had any problems. I put 35 all around in my 35x12.5R17 Toyo A/T's, load range E.
12-27-2015, 04:14 PM
#6
Tire shop put 50 in my d range bfg, steering was squirelly with only center 4" touching road. Had to let that out. Rode best with 32 front, 35 rear, but mileage lost compared to 40.
Tire shop put 80 in e range when mounted. Same thing, went down to 45-50.
Tire shop put 80 in e range when mounted. Same thing, went down to 45-50.
12-27-2015, 04:35 PM
#7
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I run about 40 up front and 35 out back due to less weight being in the rear. Load range D toyo 285/75r17
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12-28-2015, 11:53 PM
#8
It's not a truck, but I've always run the recommended pressure in our Expedition, because...
When I was learning about tires, I did the calculations just for grins on it. At stock pressures, the fronts and rears were the same rolling radius, which would result in perfect front/rear rotational synchronization in the 4x4 transfer case. When we bought the SUV, we were told that it always delivered a percentage of the power to the fronts via some kind of slippage mechanism, so synchronizing rotational rates on that vehicle sounds like a good thing.
Of course, this was assuming idea tires, which is assuming a lot.
When I was learning about tires, I did the calculations just for grins on it. At stock pressures, the fronts and rears were the same rolling radius, which would result in perfect front/rear rotational synchronization in the 4x4 transfer case. When we bought the SUV, we were told that it always delivered a percentage of the power to the fronts via some kind of slippage mechanism, so synchronizing rotational rates on that vehicle sounds like a good thing.
Of course, this was assuming idea tires, which is assuming a lot.