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BFG KO2 what psi to run?

titan01
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Panik Enthusiast

Panik

Posted
Posted

Does anyone have the load chart for dynapro atm 305/45r22 xl? Im running them at 35 psi

 

I used to have a copy but lost it somewhere. You should be able to get a pretty good idea by looking at the load range for a similar ply and size tire. I've got a set of 'E' range Dynapro ATM's (275/65/r18's) and having been running at 50psi. If I remember correctly its about 7lbs high for general unloaded driving but things didn't feel right when I dropped the pressure down to 43lbs.

 

BTW really have been liking how the Dynapro ATM's have been working for general all around tires. Pretty quiet compared to the Duratracs my wife had on her Disco, and the Dynapro's have had nice handling characteristics so far.

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nadrojcote
nadrojcote

Stock tires and your tires OP are two totally different things. The door sticker will say 32psi, but you have load range E, you will want to be up around 40 at least.

black00ta
black00ta

Just a heads up guys, running tire pressure at what "feels good" is incorrect, tire pressure is about load carrying ability. Those of you running 8 & 10 ply's at stock 4ply tire pressure are like

calgator73
calgator73

Absolute minimum PSI for this tire is 35 PSI. This is the BFG pressure load chart for a LT275/55R20 KO2 load range D:   35 1750 40 1920 45 2085 50 2275 55 2400 60 2550 65 2680   If you call BFG

FLHRSI04 Enthusiast

FLHRSI04

Posted
Posted

 

lt275/65r20 is rated at 2680lb at 50psi

2475lb at 45psi

2280lbs at 40psi

2475lbs - 2280lbs 195

-------------- = ----- = 39 lbs per 1psi increase from 45-50

45psi - 40psi 5

2315-2280 = 35lbs

correct psi to match stock tire load would be rounded up to 41psi

not to call discount tire wrong, I'm just doing simple math according to the load charts.

 

 

 

I'll give the 41 psi a try. No doubt the Discount Tire guy may be wrong. Thanks :cheers:

calgator73 Senior Enthusiast

calgator73

Posted
Posted

Did a lot of homework on this about one month ago..http://www.gm-trucks.com/forums/index.php?/topic/166656-BFG-AT-KO2&do=findComment&comment=1560403

 

Sent from my LGLS990 using Tapatalk

  • 1 year later...
Costain44 Enthusiast

Costain44

Posted
Posted

Ran 40 front and 38 rear for the winter but since the spring is here I find the front seems to be bouncing a little more than usual. I'm not hauling anything, this is my driving vehicle. Should I drop my front to 38 as well to remove some of the bounce?

chris918 Enthusiast

chris918

Posted
Posted

iv had a couple sets of the Bfgoodrich all teerains and now i have the KO2 i like them with a higher PSI i run between 55-60 depending on the season/temp

rjpoog1989 Enthusiast

rjpoog1989

Posted
Posted

275/55/20

I run mid 40's psi. If I'm driving my truck I'm hauling something in the bed, so I don't want to ever be under inflated.

Cowpie Senior Enthusiast

Cowpie

Posted
Posted (edited)

There is no better substitute for actual load/PSI charts from the tire maker themselves. I got a chart for the BFG KO2's on my 2500. I got on their site and did a contact form request and they emailed me the chart. DO NOT specify the vehicle you have the tires on or they will just punt back to the OEM recommended pressures. Only state the tire type and size and they will give you what you want. You will get the best performance, best handling and braking, best ride, and best tire life using the tire maker load charts. They are the ones who put in all the R&D on their tires and know what is best.

 

I learned to follow load pressure charts with my commercial truck tires. It pays off. Got 447,000 miles out of my last set of drive tires on my semi and currently have 230,000 miles on the current set of steer tires. Just now considering replacing them. Nice even wear and still 8-9/32 tread life on them. The tire manufacturers know what they are doing. Pay attention to their recommendations.

Edited by Cowpie
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  • 3 years later...
Ozzy O New Member

Ozzy O

Posted
Posted
On 5/13/2015 at 12:37 PM, calgator73 said:

Absolute minimum PSI for this tire is 35 PSI. This is the BFG pressure load chart for a LT275/55R20 KO2 load range ?

 

35 1750 40 1920 45 2085 50 2275 55 2400 60 2550 65

2680

 

If you call BFG and get the load pressure data in 5psi increments then I can plug that into my spreadsheet and give you a more accurate PSI by PSI breakdown.

So i have a ram 1500 and slapped on ko2's 10 ply load range D. I dont do much hauling, min a utility trailer. I have 275 60 r 20's on stock rims. What tire pressure should I have to get max mileage and should I air them down in Canadian winters. If so what should it be then?

  • 1 month later...
Todd Erriffic New Member

Todd Erriffic

Posted
Posted

I have 2020 Silverado RST and I replaced the original Bridgestone Duelers with BFG TA ko2s. 275/60/20.  D load rated. What the tire proper pressure? Installer put 45psi. Obviously truck sticker with original tires listing 35 is off. Need a little advice from the forum as this this first time I've had these tires. They sure look awesome on the truck. Thanks for your help!

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