the_dingman
New member
My door panel states that my rear tires should be inflated to 35psi, and my front to 28... I worry that it will effect my fuel economy. I've got 30" BFG all terrains, should I follow that or go 35 all around?
Tire pressure
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fourwd1
Moderator
Use Toyotas reccomended pressure as a reference point. The higher rear pressure is to account for a full load, if the rear is normally empty, bring the pressure down, the ride will improve a lot.
Bigger tires does not mean more pressure, more volume of air may be required to attain a specific pressure, that's all. Like which is heavier, a ton of rocks or a ton of feathers?
30 PSI is 30 PSI, just like a ton is a ton.
And 30 PSI is about where you want to be.
I run my 36's at 29-30 PSI on the highway (and 10 off highway). Goad tire contact pattern, good ride, decent wear.
Bigger tires does not mean more pressure, more volume of air may be required to attain a specific pressure, that's all. Like which is heavier, a ton of rocks or a ton of feathers?
30 PSI is 30 PSI, just like a ton is a ton.
And 30 PSI is about where you want to be.
I run my 36's at 29-30 PSI on the highway (and 10 off highway). Goad tire contact pattern, good ride, decent wear.
the_dingman
New member
I noticed that once I filled my rears to 35 from 28 that the ride and acceleration was better. Am I best lowering back down to 30ish?
I know 30" BFG All-Terrains are pretty common, so I'm just looking for some experience here.
I know 30" BFG All-Terrains are pretty common, so I'm just looking for some experience here.
fourwd1
Moderator
If 35 seems to work better for you stay with it, every vehicle and person is different.
Acceleration might be a little better on an overinflated (so to speak) tire because there would be less tire contact with the road, so less friction and drag. That's why they tell you to keep your tires properly inflated for better MPG. And that's why you air down your tires offroad, to get more tire contacting the ground, and therefor better traction.
But remember, if you drive around with tires over or under inflated, they won't wear evenly. Overinflated will wear the center more, under inflated the edges more.
Acceleration might be a little better on an overinflated (so to speak) tire because there would be less tire contact with the road, so less friction and drag. That's why they tell you to keep your tires properly inflated for better MPG. And that's why you air down your tires offroad, to get more tire contacting the ground, and therefor better traction.
But remember, if you drive around with tires over or under inflated, they won't wear evenly. Overinflated will wear the center more, under inflated the edges more.
