What PSI do you run on road?

[mavrick1903]

Tires have a max listed on the tire at 44. Door tag for my 2007 says 32. I'm at 35. Just curious what y'all do. Higher PSI improves MPG and reduces ride comfort. Thoughts?

 

[<<<<]

285/70/17 ntg @ 32 psi

 

[98WhiteT4R]

285/75/16 D- 35psi-used to run 40psi but the vehicle would bounce over pot holes instead of absorb them

 

[Wingsuit]

Don't know why anyone would not adhere to the door sticker, with stock size tires. 'Cept maybe temporarily in snow or mud. Didn't Ford get sued back in the day for under inflating Explorer tires for comfort, causing overheating and blowouts?

 

[mavrick1903]

Fair point. These are not stock brand or size tires.

 

[gamefreakgc]

If you don't have stock brand and size tires then ignore the door jamb sticker. Some people live by that little thing but it's not always relevant.

Trust what it says on the tire. I run mine at 40+ PSI because my tires have a maximum of 44 PSI as well. Gets better gas mileage.

 

[RedSled]

The maximum tire pressure on the tire is just that, maximum pressure under load. The door sticker is for stock tires, my door sticker says for a 265/70/16 @ 32 psi. I run mine at 34 psi. Because my tread is flatter on the road at that psi, if that makes any sense.

 

[WI_4Runner]

Depends on the tire.....

 

[gamefreakgc]

I should mention, Max PSI is on a cold tire before a drive. It can exceed the max PSI rating once warmed up with no ill effects.

I once overfilled my tires to 55 PSI... don't ask... bouncy but rode fine.

 

[miami4runner2]

im on 33 and im on 40

 

[Wingsuit]

It is true that you can inflate to whatever the max pressure says on the tire sidewall. You may get better mileage if you inflate to the max, but you will lose traction and get a bouncier ride, and you might get premature tire wear on the center of the tread. Toyota pays their engineers a bunch of money to figure out what's just right, and I try to stay in that range.

 

[DangerRanger]

As others hinted.. it really depends on weight of rig and tire combo. I've always ran a line across the tire with chalk and drive it to see what psi works best. 35x12.50R15s @30psi

 

[Sarrus25]

Stock, dry-rotted tires I run @ 32psi each. I usually run 5 psi under the "MAX COLD" recomendation on the tire.

 

[glen1978]

32 pounds

 

[earthrealm]

38psi.
though 3psi difference btw my inflator guage and hand held pressure guage.
gotta calibrate them 1 day~!

 

[Tooltime19]

As a general rule of thumb, when in doubt with stock tires, use the door sticker. There are circumstances where you can change your pressures to suit your driving needs. On my Fleet vehicles, we ran a higher air pressures than the door sticker. This is because we were in stop and go traffic all day going slow, loaded with tools and supplies and doing alot of slow steering in and out of parking lots, construction sites ect., which all those factors wear out tires much faster especially the fronts when running regular air pressures. It truly helps. But not everyone needs to raise his or her pressures. When in doubt, use the info on the door. However, when I take a road trip with three or four passengers, luggage coolers ect, I always bump up my air pressure around 5psi. This helps the tire ride better, handle the extra weight and is safer overall. This goes for my street vehicles too. When I come home from a road trip I reset my pressures. How many times do you see a vehicle full on the highway, or maybe on a road trip full of people and luggage bursting at the seams and you look down at their tires only to see the tires bulging at the sidewalls and they are going 70/75 miles per hour? When I see this, and where I live its a huge tourist town, so I see it often, I move far away because I dont want to see a tire blow and shit flying everywhere.
As far as out T4's, like someone mentioned above, it all depends on the tire size and load range of that specific tire. For example, my tires, I run about 35/37psi around town. Off road, for my general off road trips, I run around 23/25psi. This pressure works great for my needs. It provides a greater tire contact patch and much improved grip. Everything I do with my air pressures is for the safety of my family and longevity of the tires. As much as I off road, many people cant believe the great tire wear I get out from my tires. Hope this helps.

 

[riceandpho]

285 45 r22 at 40 psi
If I do 265 70 r17 I'm considering 36 psi.