WHAT PSI SHOULD I USE?

Hey everyone, the exclamation horseshoe popped up on my meter gauge and so I am going to check the psi. My question is, I have BF Goodrich All Terrain Tires on my truck, so would I still follow the psi that Toyota Manufacture states for my tire when I open the driver side door? Or do I check the psi on my tires? I also have been told that the psi number on the side of tires are the maximum pressure and that is the incorrect number to put. Help, first timer, thanks!

 

All terrain tires are different from the manufacture's guidelines. I'm currently running 37 psi in my BFG KO's, but I wouldn't suggest going past 45 psi. I recommend 35-40 psi for the best results. You'll probably see the best MPG's out of the 38-40 psi range.

 

They're gonna tell you to do the chalk test... Don't ask me, I've never done it.

 

can't go wrong with Toyota's number, the number on the tire is max pressure. you can go higher like 35 but monitor your tires for uneven wear

 

I run at 40. start there, drive for a while and see how you like it.

 

ZachPrerunner, thanks for the advice. I should go look at my tires and see what kind they are, so I actually have a clue to what it is you're saying! Hopefully after I adjust the pressure in all the tires, including the spare, the damn light will go off!

 

Thanks everyone, I really appreciate the help. I will let ya'll know how it goes tomorrow.

 

if the light doesn't go off, read this https://www.tacomaworld.com/threads/turn-off-your-tpms-light-forever.363647/

 

The psi on the tires is the max pressure. Unless you are carrying heavy loads, you will probably never fill your tires that high.

Probably the best thing to do, is chalk test them. I'm not sure where I found this (I've had it for a while), but it's how I chalk test my tires...

Color a section of your tire with chalk to see how much tread is making contact with the ground. Start by finding a flat road surface. Concrete is actually the best choice, but you can also do this on asphalt. Make a mark with soft chalk that goes all the way across your tread. Then, gradually drive your truck forward about 50 feet and then backwards 50 feet.

Analyze the chalk on the tire. If the chalk is only worn off on the center of the tire, reduce the tire pressure slightly and go through the process again. With the adjustment, you should see the chalk wear off more broadly. Keep making tiny adjustments in the tire pressure until the chalk wears off evenly and all the way across the tread.

You will have to complete this process for each of your four tires. Once you’ve found the right street pressure, add 10% to all four tires. Then, measure the tires and add pressure to balance them (measure from the wheel to the ground). Start by balancing the profiles of the front tires with each other. Then, balance the front tires again with the rear tires. Always adjust the tires with the smaller profiles by adding air.

This method is tedious and it is not perfect. At the very least, it will get you in the ball park.

 

You are good until this point except backing up is unnecessary.

One front tire and one rear tire is close enough. If your truck is always loaded heavier on one side I guess you could add a couple PSI to that side/corner but its unnecessary. And there is no need to add 10%.

Whoever told you this was flat out screwing with you. The automotive maintenance equivalent of a midnight snipe hunt. Makes no sense whatsoever.

 

I agree with you...I only did the left front and rear; I didn't bother adding 10%, since psi increases around 10% from heat while driving; and I didn't measure the height of the tires (because I'm not nearly that anal).

I think the author's reasoning for backing up, is to test the tires on a consistent surface [not a bad idea]. I also think he included more information than was necessary, if for no other reason...to cover his ass.

I just passed it along. He can use it, or as I did, use parts of it...it was just to get him in the ball park.

 

My 2013 Baja AC came with 265/70/16 BFGs mounted on TRD fake bead-lock wheels. Here's the modified door sticker that addresses the special wheels and tires. Even has another partial sticker on top that I got in the mail as part of a recall. 46 PSI all around.

 

The sticker on my 11 TRD OR shows 29 front and 32 rear for the the stock P265/70-16s. My LT265/75-16C Duratracs chalk at 30 psi.

 

My Baja's stock tires are All Terrain TAs, not the Rugged Terrains on stock Off-Road models. My spare is still the original OR Rugged Terrain, and as you can see it's factory pressure is 32 PSI. The OP is asking about All Terrain T/A tires. There is a reason why Toyota has them up that high, and they are wearing evenly. I air down off road, but for day-to-day 46 PSI is perfect.

 

What PSI do ya'll/yous guys recommend for the OME Rugged Fails? I've been running 33lbs front and 39 lbs rear. That's a little higher than the door jam says. I believe the max psi on tire says 35 lbs. Guys at tire shop say run 40 lbs all the way around. Not done chalk test yet.

 

Haha, I thought the same thing when I noticed mine light up one day.... the 'horseshoe' is actually a cross-section of a semi-flat tire.

 

No argument from me, DoorDing. I don't have but 6000 miles on them.

 

Gen III's HAVE to have good tires to support that giant-ass grill!

 

Maybe Larry (the dog goggle guy) should weigh in on this too.

 

My Nitto's say 29 lbs. Seems low...