BFG AT KO 2's

Hi all,
I have recently added BFG's 275/70r/17 to my Taco, and after the instal the dealer pumped them to 32psi.
I know thats what the sticker says for the stock tires. The max psi on the tire is 80psi.
What would be a good running PSI for hi way use? Right now I have the at 50psi and seems ok.

 

About 35 psi, give or take.

ETA: I looked it up; 34 psi.

 

I run mine at 32ish for no reason in particular. In fact its what the dealership put them at when they installed them and I haven't changed em. Ride quality aside to determine the "best" tire pressure you have to do the chalk test. And all that really gets you is optimal wear. For better performance off-road you'll want to air down a bit. Especially from 50.. that's pretty high.

 

36-38psi seems to be the sweet spot for me with my set

 

Same here I'm at 37 and like how they ride. Also from the looks of it I'm wearing evenly

Average about 20 mpg on the hwy at 37

 

All you guys have LT/275/70/17s?

 

I'm at 25 rear, and 27 front with my 315's.

Chaulk test is quick and easy.

 

Nah im on 265/70/17 C loads

 

32-34psi, I like a smooth, efficient ride. Nothing worse then going over a pothole and your rear end cant seem to control itself because of those hard ass tires.

 

Therein lies the rub...
At 35 psi your tire is capable of supporting 1890 lbs.
OPs tire is capable of 2000 lbs at 35 psi.

LTs should be set at the appropriate pressure to attain a 1954 lb load capacity.

You should be at 37 psi.

 

Hm good to know. I'll add a bit next time I'm at the pump.

 

It's not ok.

 

Hey thanks for the input, care to elaborate? I'm just trying to reduce the rolling resistance. Tire is good for 80psi @ 50psi I'm only at 62%.
At 37psi thats only 46% of rated max. Isn't that low?
Thanks again for all the replies. Just wondering is there a formula out there?

 

At 50 I would think that you would be all over the road - mid 30's for sure.

 

Not really, but you need tire load charts.
Our trucks have a load requirement of 2,149 lbs per tire for P and ISO metric or 1,954 lbs for LT tires(2,149/1.1=1,954). P and ISO metric are derated for use on truck/suv by a factor of 1.1
Also, different size tires get there at different PSI.

Like I said, with your tire size and load rating, it attains it at 34 psi.
At 50 psi your tire has a load capacity of 2,600 lbs.

https://www.google.com/url?sa=t&sou...gg_MAM&usg=AFQjCNH3v0FcI6bY9v6MzcsvJ0j16HPwow

 

37 psi on the road.

Quiet. Smooth.

 

It's not about roll distance. When you add high air pressure to the tire you are creating a balloon affect that will wear the center of the tire. Car/Truck tires should have even contact with the ground so the tires wear properly and perform to mfg specs for mileage and wear.

Trust me, the gas you think you are saving with hard tires is just going to bite you in the ass when you have to replace your tires sooner. But to each their own.

 

The lateral footprint is nothing compared to what it's doing to the longitudinal footprint.

 

You could check out any of the other 100 threads asking what tire pressure you should run, or any of the tons of other specific threads on what tire pressure you should run on BFG AT KO2 tires everyone else has put on before they left the dealer lot; but you didn't search so you wouldn't know that. There is no formula, just use some research, common sense and information out there combined with being an adult.

Tyler

 

I don't mind one bit.
No one forced me to click this thread and I genuinely like helping people when I think I can.
Besides, there are a handful of people on this forum who can calculate psi; everyone else is "herp-derp chalk test".
No one seems to really grasp the concept, that size and load rating make a difference. OP is the first one I can recall, with this particular size and load rating, asking about psi.
I challenge you to search and find accurate info OP is looking for; either directly or indirectly.
Caveat: you can't use any of my posts.