Tire Pressure PSI for On-Road Driving

[mcnuggs]

Hey all!

I'm a bit unsure about the answer here, despite there being some good tangential information on this forum. I have the 6th Gen TRD Pro with the 265/70R18 Toyo Open Country A/T III all-terrain tires. The sidewall mentions the max pressure is 50PSI, but the door card lists 33PSI. I got my TRD Pro from the dealer with 50PSI lol (all measurements taken cold). If I do just on road driving, should I follow the manufacturer recommended pressure of 33PSI? IMO that feels pretty low, but assuming the manufacturer knows best here?

Also curious if anyone has experimented with different PSIs and what that experience might have been like. Thank you in advance!

Sponsored

 

[TRD Pro or Die Trying]

Hey all!

I'm a bit unsure about the answer here, despite there being some good tangential information on this forum. I have the 6th Gen TRD Pro with the 265/70R18 Toyo Open Country A/T III all-terrain tires. The sidewall mentions the max pressure is 50PSI, but the door card lists 33PSI. I got my TRD Pro from the dealer with 50PSI lol (all measurements taken cold). If I do just on road driving, should I follow the manufacturer recommended pressure of 33PSI? IMO that feels pretty low, but assuming the manufacturer knows best here?

Also curious if anyone has experimented with different PSIs and what that experience might have been like. Thank you in advance!

33 psi is good for daily driving in my humble opinion.

 

[Tarekith]

50psi is what they ship the vehicle with from Japan so the tires don't get any flat spots in transit. The dealer was supposed to set them to 33psi as part of the initial inspection and set up, sounds like they didn't.

Happened to me too, though in my case the driver's side tires were set to 33psi, the passenger side they forgot and left at 50psi. Doh.

 

[onlywayman]

That’s the way I recieved my limited.
After 8300 miles and playing with different tire pressures I set my tires to 32psi cold
when driving and tires heat up they are 33-34 depending on the heat that day.that is the best ride anything higher its a hard ride
The oem tires are the dunlops they suck.
By 20k I will have new tires.

 

[Dog4Runner]

36 and don’t rotate them.

 

[Timmybung]

36 and don’t rotate them.

Why?

 

[mcnuggs]

50psi is what they ship the vehicle with from Japan so the tires don't get any flat spots in transit. The dealer was supposed to set them to 33psi as part of the initial inspection and set up, sounds like they didn't.

Happened to me too, though in my case the driver's side tires were set to 33psi, the passenger side they forgot and left at 50psi. Doh.

Did you notice a ride quality difference on 33? Or did you never really drive with 50?

 

[Tarekith]

The 4Runner was never intended to be driven with 50psi in it, so no I never tried it with that. 33psi feels fine to me, both on and off-road.

 

[squawbum]

Definitely 33. Mine came really high. The ride quality is so much better at 33.

 

[Chicane]

Mine were set at 33, but now at 32 as the nights get colder and with the normal loss of air. They will reach up to 36psi on a hot day. 33-35 hot is good.

 

[MikeUtah]

The 4Runner was never intended to be driven with 50psi in it, so no I never tried it with that. 33psi feels fine to me, both on and off-road.

As stated, 33 psi (265/70R18 Toyo Open Country A/T) is the recommended pressure and works just fine for daily driving. Note, my TH came with 48 psi just like most others and the Dealer did not set the correct pressures.

Now for off-road and airing down. All trails are different and I air down to what makes the ride 'comfortable'. I frequently will air down and drive a few miles and then adjust, used down a little more.
This is what I have found to work for me:

• For trails that have 'small' rocks or bumps the size of golf balls/baseballs, I air down to ~28 psi
• For trails that have 'medium' sized rocks or bumps (frequently imbedded in the trail surface) , the size of grapefruit, I air down to ~25 psi
• For trails where I'm 'boulder' crawling, I air down to 20 -22 psi
• For soft sand I air down to ~20 psi

Just my two-cents

 

[Don B]

As stated, 33 psi (265/70R18 Toyo Open Country A/T) is the recommended pressure and works just fine for daily driving. Note, my TH came with 48 psi just like most others and the Dealer did not set the correct pressures.

Now for off-road and airing down. All trails are different and I air down to what makes the ride 'comfortable'. I frequently will air down and drive a few miles and then adjust, used down a little more.
This is what I have found to work for me:

• For trails that have 'small' rocks or bumps the size of golf balls/baseballs, I air down to ~28 psi
• For trails that have 'medium' sized rocks or bumps (frequently imbedded in the trail surface) , the size of grapefruit, I air down to ~25 psi
• For trails where I'm 'boulder' crawling, I air down to 20 -22 psi
• For soft sand I air down to ~20 psi

Just my two-cents

I've got mine set at 31 cold, takes about 2 miles light highway speed of 60 and they will come up to 33 or 34 very quick.

 

[onlywayman]

20” Factory Dunlops after driving 50 miles

 

[Don B]

I've got mine set at 31 cold, takes about 2 miles light highway speed of 60 and they will come up to 33 or 34 very quick.....25 trd off road premium

 

[MikeD]

Mine also came overinflated from dealer (55-56#). Ride improved significantly when I aired down to the Toyota spec of 33. Milage was in the "getting better" phase and I noticed no decrease (only increase) on 2nd to 7th tank.
But this week I am putting the TRD PRO wheels and Falken Wildpeak A/T4W 285/70R18s (load C) and I plan to follow the guidance I've found a few places, including here: pressure-calculator, which gives me 39# for my new tires to match the load capacity of the OEMs (less 10% overage for SL tires).
Posting here because it seemed somewhat pertinent and am looking for any insight on optimizing tire pressure for ride comfort and milage when not airing down for off-roading.

Sponsored