Recommendation for psi please

Ok so I just purchased some nitto terra grappler g3 for my 2023 toyota tacoma trd off road went from the stock good year wrangler territory to the nitto. Door jam says 30psi but after leaving the tire place they filled it with 35psi.cold psi *** Looking for any help with this topic thanks in advance also I should say that this is my first tacoma I am 3 weeks in.

 

35psi is a standard/safe pressure for most passenger cars and SUVs. It is OK to use, but will not necessarily give you best tire life or handling.
Different tires and vehicles (and loads in the bed, canopy, camper, etc) will require different air pressure. Door jamb number is for the factory tires and weight.

Draw several FAT chalk lines across each tire (2 line on each are easy to do). Go for a 10 mile drive. Check the chalk lines. They need to wear uniformly across the width of the tire. If they are worn out just in the middle, you have too much air pressure, let 3 pounds out. If they are worn on the edges, tires are cupping, not enough pressure, add 3 pounds. Test again.

Alternatively, check the tire wear with the thread depth gauge across the width of the tire, and adjust as needed.

 

You really don't need to go 10 miles. I do this in a large empty parking lot and just drive straight lines so I don't influence the readings due to turn scrub.

 

35 psi cold is going to warm up and give you a pretty stiff ride. I have the BFG K02s and I run them at 30 psi cold.

PS: Part of what you might be feeling is just the new tire with it's own sidewall and tread characteristics.

 

Same happened to me….shop set tires at 35psi and a year later I’m still running 35. When they get up to 37-38 I can tell I’m on rocks and low 30’s feels squishy.

Excellent wet/dry lateral grip on the traffic circles/roundabouts and more planted feel overall. they’re wearing evenly, and getting better fuel economy.

If you are at 35psi…how does it feel to you?

 

I liked what the Australian Coopper tire site recommended for my off road oriented Cooper ST Maxx tires. Inflate to the pressure you want, drive 20 minutes and check pressure. If it raised more than 4 lbs they are under inflated, if they raised less than 4 lbs they are over inflated.

I drive my Tacoma with three types of loads, empty bed, loaded bed, loaded bed towing a trailer with about a 400 lb toungue weight. I did the test for all three and set my pressures as needed.

It reminded me of how I set tire pressures on the many motorcycles I owned over the years, 10% increase rule.

 

Ok great thank you for the input! I will definitely take all of that into consideration

 

This probably won't help you any. 265/75/16 on a 2nd gen I probably put 40 PSI in when it got cold. My F-150 is at 43 front and 42PSI in the rear. Soft tires always have me feeling like I'm going to bend a wheel.

 

Way too high of PSI for either truck, and probably squirrelly steering, too.

 

Feels fine to me the tires don't even feel hard when I kick them. Those numbers do sound high.

 

On a side note, I just bought a Kobalt air compressor. Pumps pretty fast and runs off AC and 12 volts. Something like this might be handy when testing different PSIs.

$72 Kobalt 120v & 12v Portable Air Compressor Inflator Tire Pump Nozzle Needles 120 PSI LED Display

https://www.amazon.com/Kobalt-Porta...t=&hvlocphy=9032883&hvtargid=pla-348517779540

 

My work gave those out a few years back as Christmas gifts to all the guys in the shop. They work really well. I carry it with me on vacations.

 

The shop put in 35psi because that's what the air gun was set at and the laborer used after working on your truck.
Has nothing to do with what is best or recommended by the manufacturer of your truck or new tires.

 

I've got taller E load tires, and keep 'em at 32psi. In the summer I see them climb as high as 37 psi in extreme hot days, and goes back down to 32 psi on their own. In the winter they sometimes drop to 29-30 psi, but again climb back up on their own. This is all viewed from my go-to screen settings.




Quick switch on my steering wheel buttons, and I'm on this screen in a flash.

 

i got those tires last month
DT put 35 in them and it rode rough
i put them down 2 psi every couple of days to get them smoother
i got to 27 or 28 and felt that was enough
i just cruise in town but if i go on a road trip i will put them at 32
they are firmer than the oem tires but they are a true a/t tire so thats life i guess

 

I ran my Nitto G2's at 38 psi, and had perfect caulk pattern.

 

I work at a tire shop, and personally use this if I'm putting different size than factory tires on a customer car. It isn't gonna be dead on perfect, but it's going to be about as good as you're gonna get without chalk testing, adjusting, driving, testing again etc....

 

My 265/75r16 k02's were filled to 37 after a repair, and it was pretty rough and bouncy. For my truck, 35 is a good balance between ride and mpgs

 

I got a couple cheap 10 or 20 gallon compressors for that. Which work fine if they stay plugged in I guess I need a larger tank, if I got to put more than 5 pounds in a tire the compressor needs to stay running and build pressure. This becomes annoying when doing more than one vehicle and it's usually in the cold and close to sunset.

I'm trying to find something that will work better so a 3 minute job doesn't take 15 minutes. I really need a larger indoor compressor and few hundred feet of hose. The portable compressor works fine, and the Kobalt looks like it would pack in the truck pretty well. I'd be good with a portable that had more capacity.

 

I always want this calculator to work, I try it every time the link is posted, but when I plug in my specs it recommends 26 with this warning:

**The new capacity is much higher, however this size is not recommended to be used below 26 psi.
**Although this pressure meets the load capacity, 26 psi may be too low for optimum tread wear.
Assessing tire contact patch for proper treadwear is always recommended.​

(265/65 17 vs 285/70 17)
I’m pretty dense, but from the article I gather that since the new tire has a higher load rating the calculator is trying match load capacities and suggesting the lowest possible pressure?