DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Mod Zone - Custom Dodge Ram Mods - Dodge Ram Performance > Dodge Ram Wheels And Tires


Notices

Dodge Ram Wheels And Tires General discussion related to wheels and tires.


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 04-18-2012, 02:22 AM
Sport10's Avatar
Sport10 Sport10 is offline
Dodge Ram Forum Member
 
Join Date: Feb 2012
Location: Clinton
Age: 38
Posts: 74
Gender: Male
Vehicle: 2010 Dodge Ram Sport, Quad
Trim Level: Sport
Color: maroon
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:21
Sport10 is on a distinguished road
Default BFG KO 275/65/20, What is Proper Tire Pressure?

Just like the title says...
I am very interested in peoples opinions/facts on what the best tire pressue is in these?
Best for MPG's?
I know there is endless threads on this subject but when doing a google search I couldn't seem to find a good answer on my tire.
I have the BFG 275/65/20 and i'm pretty sure it's an LT tire. I currently am running 36 psi (1 psi over door jam rating), and find my mpg's lacking. On the other hand comfort is very nice. I have a cold air intake, 18 mufflex, and cortex programmer w/93 tune, I average about 12.5 to 13 mostly city mpg. I don't drive like a maniac nor a grandpa, somewhere in the middle.
Also would increasing the tire pressure help with 0-60 and quarter times or make it more sluggish??
Looking for someone who has a vast knowledge of this subject...Please chime in, TX
Eric B.
__________________
2010 RAM SPORT 1500 QC, HEMI-
NOT AS MANY MODS AS SOME, BUT GOTTA FEW---
Reply With Quote
Sponsored links
  #2  
Old 04-18-2012, 02:31 AM
hemi07's Avatar
hemi07 hemi07 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: quesnel b.c.
Age: 36
Posts: 244
Gender: Male
Vehicle: 2010 ram
Trim Level: slt
Color: blue
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:12
hemi07 is on a distinguished road
Default

I had mine at 36psi i just put it to 40 so far so good. Mine r 285-65-20 i got the same tire
Reply With Quote
  #3  
Old 04-18-2012, 02:48 AM
GTyankee's Avatar
GTyankee GTyankee is offline
Dodge Ram Forum Member

 
Join Date: Dec 2009
Location: San Diego East County, Ca
Posts: 17,987
Gender: Male
Vehicle: 2009 Dodge Ram 1500 2X4
Trim Level: quad cab SLT
Color: sunburst orange pearl
Rep Power: 18
Rep:2597
GTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond repute
Default

as a reference, you need to know that PSI is Pounds Per Square Inch
it does not matter if it a wheel barrow tire or a semi truck tire
35 PSI is the same in both

a semi truck is usually 65 or more PSI, because of weight & heat
race cars start with low PSI & pressure builds up after a couple laps at 100+ MPH
desert racers purposely run low PSI for traction

I know that i didn't answer your question, but it gives you a reference point
__________________
Ram 1500 SLT Quad cab, 5.7 HEMI(R) MDS VCT, 5 speed auto 545RFE, 3.55 differential gears, 18" Magnaflow muffler, EGR bug deflector, Bushwacker fender flares, customized Nfab nerf bars, CB radio, Autonet wi-fi router, custom soft tonneau cover, Line_X bedliner, DEBO Step, build date 10/15/08 a Wednesday built vehicle
Reply With Quote
  #4  
Old 04-18-2012, 03:15 AM
Sport10's Avatar
Sport10 Sport10 is offline
Dodge Ram Forum Member
 
Join Date: Feb 2012
Location: Clinton
Age: 38
Posts: 74
Gender: Male
Vehicle: 2010 Dodge Ram Sport, Quad
Trim Level: Sport
Color: maroon
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:21
Sport10 is on a distinguished road
Default

Quote:
Originally Posted by GTyankee View Post
as a reference, you need to know that PSI is Pounds Per Square Inch
it does not matter if it a wheel barrow tire or a semi truck tire
35 PSI is the same in both

a semi truck is usually 65 or more PSI, because of weight & heat
race cars start with low PSI & pressure builds up after a couple laps at 100+ MPH
desert racers purposely run low PSI for traction

I know that i didn't answer your question, but it gives you a reference point
Thanks for the refrence.
Would it be safe to say you are suggesting a higher psi for my truck then the suggested 35 on the door jam ?
I ask this cause of what you said about the semi truck, and lets face it while are trucks aren't semi"s there not prius's either.
More insight would be appreciated, thanks again
Eric B.
__________________
2010 RAM SPORT 1500 QC, HEMI-
NOT AS MANY MODS AS SOME, BUT GOTTA FEW---
Reply With Quote
  #5  
Old 04-18-2012, 03:19 AM
Sport10's Avatar
Sport10 Sport10 is offline
Dodge Ram Forum Member
 
Join Date: Feb 2012
Location: Clinton
Age: 38
Posts: 74
Gender: Male
Vehicle: 2010 Dodge Ram Sport, Quad
Trim Level: Sport
Color: maroon
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:21
Sport10 is on a distinguished road
Default

Quote:
Originally Posted by hemi07 View Post
I had mine at 36psi i just put it to 40 so far so good. Mine r 285-65-20 i got the same tire
This is actually what I was going to try next.
Would you say it is alot harsher now? Any improvement on mpg's?
Does your truck seem to have better pick up due to the increase in pressure?
Tx....
Eric B.
__________________
2010 RAM SPORT 1500 QC, HEMI-
NOT AS MANY MODS AS SOME, BUT GOTTA FEW---
Reply With Quote
  #6  
Old 04-18-2012, 06:53 AM
Excoastie's Avatar
Excoastie Excoastie is offline
Dodge Ram Forum Senior Member!

 
Join Date: Aug 2008
Location: Bossier City, LA
Age: 42
Posts: 3,444
Gender: Male
Vehicle: 2014 VW Jetta GLI
Color: Metalic Black
Rep Power: 9
Rep:1358
Excoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud ofExcoastie has much to be proud of
Default

I don't know that there is a hell of a lot you'll be able to do to increase your MPG. I'm running stock tires, at about the same pressure that you have, and I'm getting about the same mileage as you are. I don't think changing the air pressure will make much of a difference, if any (just my opinion and I don't have any scientific data to back it up).

I've just accepted that the HEMI in a large truck that weighs a lil over 3 tons isn't gonna get great mileage. I am usually quite please if I'm close to 13 MPG, I do mostly in town driving with a few short trips on the highway (though I doubt they're enough to matter)

Enjoy your gas guzzling, almost 400 HP beast and accept that we'll never get the mileage of other smaller, less fun to drive vehicles

Exco
__________________
Oracle Interior LEDs, EGR Vent Visors, Ram eyes, Husky Liner Splash Guards, R/T Badges Front and Rear, LED Light Bar, Stubby Radio Antenna, Custom Shift Knob, ARE LS II bed cover, Bed Rug, Flowmaster 50 series HD, SilverStar Ultra low beams, K&N drop in filter, MOPAR sill guards, Smitty Built nerf bars, 24% tint on the front.
Bill
Reply With Quote
  #7  
Old 04-18-2012, 04:54 PM
Sport10's Avatar
Sport10 Sport10 is offline
Dodge Ram Forum Member
 
Join Date: Feb 2012
Location: Clinton
Age: 38
Posts: 74
Gender: Male
Vehicle: 2010 Dodge Ram Sport, Quad
Trim Level: Sport
Color: maroon
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:21
Sport10 is on a distinguished road
Default

I called BFGoodrich today and asked them what they recommend, and they said 50 in all 4 corners. Thay said the door jam number is for stock tires only, not for a bigger 10 ply tire, which makes sense to me.
This is what I did and took a short ride and I have no complaints, so will see how I like them in the long run.
I will post back at a future date to let you know abot mpg's and comfort..
Thank you to the people who replied.
Eric B....
__________________
2010 RAM SPORT 1500 QC, HEMI-
NOT AS MANY MODS AS SOME, BUT GOTTA FEW---
Reply With Quote
  #8  
Old 04-19-2012, 10:31 PM
clatla's Avatar
clatla clatla is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2010
Location: MN
Age: 43
Posts: 155
Gender: Male
Vehicle: 2010 Dodge Ram
Trim Level: Laramie
Color: Snow White
Engine: 2009-???? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:31
clatla is on a distinguished road
Default

50 PSI thats alot for a 1/2 ton. I have the stock badyears and have run them at 40 since I got the truck. You will defianley notice a harsher ride with 10 ply and 50 psi. I would guess that you will wear out the centers long before the outer edges.
Reply With Quote
  #9  
Old 04-19-2012, 10:42 PM
Swaggerville Ram's Avatar
Swaggerville Ram Swaggerville Ram is offline
Dodge Ram Forum Senior Member!
 
Join Date: Sep 2011
Location: Manitoba, Canada
Age: 34
Posts: 736
Gender: Male
Vehicle: 2009 Ram 1500
Trim Level: SLT
Color: Deepwater Blue
Rep Power: 3
Rep:127
Swaggerville Ram will become famous soon enoughSwaggerville Ram will become famous soon enough
Default

Higher the ply RATING, higher the pressure. That is on purpose, as psi factors into load rating. I capitalized rating because that is only what it is, there are not 10 ply's in the tire. The tire doesn't care what truck it's on, it takes what it takes for psi
__________________


"I don't care to hear what your ideas are, mine are better"
Reply With Quote
  #10  
Old 04-20-2012, 12:08 AM
RedRamHemi's Avatar
RedRamHemi RedRamHemi is offline
Dodge Ram Forum Newcomer
 
Join Date: Apr 2012
Location: Southeast Kentucky
Posts: 25
Gender: Male
Vehicle: 2005 Dodge Ram 1500
Trim Level: SLT 4X4
Color: Red
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:10
RedRamHemi is on a distinguished road
Default

I ran mine (BFG T/A KO's 285/60/20's) at 50 psi for a long time. Got 17 to 20 mpg avg. which I think is really good for this truck. The wear was even across the tread. No extra wear in the center. I dropped the psi to 40 recently because I could feel the truck seem to loose road contact over small road bumps, etc. . The road contact issue went away after lowering to 40 and the mileage is still the same and ride quality seems to be improved as in softer ride. Doesn't look like it would make that much difference, but it did, or, could just be me. I plan to try 45 psi and see what that does. BTW, my tires are rated to 65 psi max. pressure for towing and hauling. It has always been my experience that max. psi will get maximum tire life (and less rolling resistance which would equate to more mpg) at the sake of ride comfort. Hope this helps you.
__________________
Spectre Stainless CAI, Superchips Flashpaq,
FlowMaster Series 40 CatBack, Hurst Equipped, Tinted.
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Advertisement






All times are GMT -4. The time now is 09:13 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum