Conflicting information regarding proper tire pressure

I recently installed BFG All Terrain KO2 265/70R17 C Load range tires. After much research on this forum and Google searches, answers range from 29 psi to 55 psi.

My truck doesn't have extra weight added (body armor, etc), I'm trying to keep it light. I also don't tow anything or load the bed very heavy.

Does anyone have recommendations based on past experience? May number one concern is not wearing out the tires prematurely.

 

30-35 and call it a day.

 

If you're that concerned about proper pressure, you should chalk test them. That'll not only give you the proper pressure for your setup but also the proper pressure for each corner.

 

When I ran BFG ATs on my 06 Taco, I ran 35 in the front and 30 in the rear. Got 50K+ out of them.

 

When I see that agressiv profile , with blocks thst cover part of sidewall, you better stay on the high side of pressure.

There is less sidewall to flex, nd I have seen pictures of such tires, torn yust at the edges of those profile,blocks.

When I calculate advice pressure for such tires, i first substact 20% of given maxload of tire, or 8 loadindex-steps.
The same tire , so same sises and loadrange, of a normal road tire, has same loadindex/maxload.

C - Load needs 50 psi to carry maxload upto 99 mph.
Now after 20% reduction, your tires probably still have a comfortable reserve for your GAWR's , so this would yustifi a lower pressure.

If you give all the info needed, I will calculate, and then you have better info to yudge the pressures.

 

Load range C tires are rated to carry less weight than the P series tires that came on the truck. The door jamb sticker says 29-32 PSI for P series tires and if unloaded and the best ride is the goal that is about right. But the tire sidewall calls for 44 PSI for heavy loads. With P series I always ran 38-40 PSI. I get better fuel mileage and when I need to haul a load don't have to air up 1st.

I currently have E rated tires and since they are stiffer they need less air to do the same job. On a full size truck 50-80 PSI would be about right, but on a Tacoma around 30-35 is about right, even loaded heavy.

To be honest, you just have to experiment. I had to do that to determine what worked best for me. But I'd start at about 30 PSI and go from there.

 

P- tires are allowed to carry maxload AT 35 or 36 psi, upto 99mph. C- tires AT 50 or 55 psi upto 99mph. And same sise C , has larger maxload then P-tire, but less lbs/psi.
Also XL/ reinforced/extraload exists, AT 41 OR 42 psi, in between .
SO i dont know where former poster gets his information. Mayby AT tires are exeption to the rule of the general system.
Edit:
Googled this sise and found loadindex 115 to 121 ( here 112) , only did not give AT wich pressure so loadrange.
But this could mean that the tiremaker here already did a lowering of maxload for reasons of those profile-blocks that cover part of sidewall. Searched on Dutch Google , and found in past more higher maxload then in America. So I mayby have to take back my critics on former poster

 

3d gen Tacomas have a load inflation weight of 2,149 lbs-2,172 lbs
Examples:
265/70/16/112 @ 30 psi = 2,149 lbs
P265/65/17/110 @ 29 psi = 2,149 lbs
P245/75/16/109 @ 32 psi = 2,172 lbs

The vehicle manufacturer de-rates euro-metric and P-metric tires for use on trucks and SUVs.
If you switch to LT tires, the new load inflation weight is 2,149/1.1=1,954 lbs.

An LT265/70/17/112 has a load inflation weight of 1,964 lbs @ 37psi.

TOYO PDF
https://www.google.com/url?sa=t&sou...Vaw0zaHumL9xB01d0CRYFLPCS&cshid=1562890063059

NITTO PDF
https://www.nittotire.com/media/152964/TechBulletin_NTSD-12-011.pdf


https://www.tiresafety.com/en_us/choosing-tires/sizes-and-classifications/light-trucks-and-suvs


https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=195


https://www.moderntiredealer.com/article/311494/lt-or-p-metric-tires-for-light-trucksuv-applications


https://www.tirereview.com/tire-types-and-load-capacity/

 

Incorrect.
C, D and E rated tires of the same size share load inflation ratings up until their respective max inflations.