correct tire pressure for 37x13.50x20 toyo tire - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by skter97, this thread has received 15 replies and been viewed 36962 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 10-23-2009, 03:12 PM Thread Starter
Senior Member
 
Join Date: Dec 2008
Location: luray va
Posts: 499
Points: 27,326
Thanks: 14
Thanked 7 Times in 3 Posts
Send a message via Yahoo to skter97
correct tire pressure for 37x13.50x20 toyo tire

What air pressure r u guys running n ur 37 toyos, I'm just put 45 in mine and it feels weird drivn it now, I can't remember what I had before

http://performancebyhenry.com/index-videos.php

2008 F250 FX4 ECLB, ALL RECONED OUT, S&B INTAKE, 6 INCH FABTECH LIFT WITH 37 TOYOS ON 20X10 HELOS WHEELS MAXX 8 CHROME, SPARTAN TUNED WITH THE 310!! 5 INCH MBRP COOL DUAL SS EXHAUST, SUPER DUTY LETTERING INSERTS, 6K HID BI-EXENON LIGHTS AND 6K BI-EXENON FOG LIGHTS, 5100 BILSTIEN SHOCKS, SHOCKER 152DB HORNBLASTER KIT!!,MORE TO COME,MAYBE A SPEARCO INTERCOOLER AND MAYBE SOME NOS
skter97 is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 10-23-2009, 04:24 PM
Senior Member
 
O2ShootTheJ's Avatar
 
Join Date: Dec 2008
Location: VA
Posts: 2,183
Points: 57,458
Thanks: 107
Thanked 131 Times in 112 Posts
read the side of the tire

2008 F250 CC SB - It all wont fit in the sig so why bother?

Singles Club #222
December 2008 TOTM
Riding High Club #2
2008 Truck of the Year
Ridin' Dirty Club #2

Big Thanks to:
Smokin' Guns Peformance and Accessories - Smokingunsperf.com
Throttle Junkie Performance Parts - tjpparts.com
O2ShootTheJ is offline  
post #3 of 16 (permalink) Old 10-23-2009, 05:03 PM
Senior Member
 
Hellbilly's Avatar
 
Join Date: Sep 2009
Location: SOCAL
Posts: 776
Points: 22,222
Thanks: 146
Thanked 146 Times in 80 Posts
Garage
I run 40 when not towing....50 when towing....I have the AT's...I ran my last set at 50 most of the time and the tires wore in the center really fast....

AMERICAN CLUB #43
WALNUT CLUB
BOMB SQUAD
RIDIN' DIRTY CLUB #54
WEST COAST POWERSTROKERS #9
SINGLES CLUB #256


Though more painful, there is more dignity being under the bus than under the desk.....at least under the bus, you're only swallowing a little pride....

Last edited by Hellbilly; 10-23-2009 at 05:12 PM.
Hellbilly is offline  
post #4 of 16 (permalink) Old 10-23-2009, 06:17 PM
Senior Member
 
ZeroOne's Avatar
 
Join Date: Dec 2008
Location: Southern DE
Posts: 384
Points: 39,784
Thanks: 14
Thanked 42 Times in 32 Posts
Depends on your rim width, vehicle weight, etc etc. Have any chalk? Make a thick line across the treads, air them up, then back off to where the line wears evenly across the entire width of the tread.

My tire size is different so these numbers wont work exactly, but just as an example, 38x15.50 on 20x10s on a Diesel/CC/SWB need 50(max) front and 33 rear.
ZeroOne is offline  
The Following User Says Thank You to ZeroOne For this addition to TDG:
Hollywood (10-26-2009)
post #5 of 16 (permalink) Old 10-24-2009, 12:34 PM
Junior Member
 
Join Date: Feb 2009
Posts: 79
Points: 3,360
Thanks: 4
Thanked 7 Times in 6 Posts
I would think the load range D or E will play a big factor as well! I too would read the sidewall of the tire and see what it says for max pressure and then maybe back that number off by 5-10 psi depending on load on truck.
smoxy is offline  
post #6 of 16 (permalink) Old 10-24-2009, 03:32 PM
Ford F250 Dude
 
Jus Cruisin's Avatar
 
Join Date: Aug 2007
Location: DeBary, FL
Posts: 93
Points: 14,795
Thanks: 3
Thanked 4 Times in 4 Posts
Mine are 22's load range e and I run 60-65 in mine.

2008 Ford F250 4X4 Lariat Crew Cab Short Box 37x13.5x22 Toyos, KMC XD wheels, BDS 6" lift, tuned up.
Other toys:
2008 Roush 428R Mustang - Supercharged
2008 Corvette convertible
2009 Harley Davidson FLTRSE3 Road Glide
Jus Cruisin is offline  
post #7 of 16 (permalink) Old 10-25-2009, 05:34 PM
R.I.P. DAD
 
SEABEE08FX4's Avatar
 
Join Date: Dec 2008
Location: Montgomery, Texas
Posts: 3,800
Points: 44,554
Thanks: 368
Thanked 289 Times in 205 Posts
45-50

R.I.P. TMCS (SS) Brooks R Newell, I will forever miss you.

OneBigAssMistakeAmerica

2008 F-250 FX4



NMCB-28, KICKIN BUTT SINCE 1942

American club member #40
FOSP Club # 1
My sense of humor is an acquired taste, if you dont like it....... ACQUIRE some taste.
SEABEE08FX4 is offline  
post #8 of 16 (permalink) Old 10-25-2009, 10:17 PM
Senior Member
 
Superdutytd's Avatar
 
Join Date: Dec 2008
Location: Washington State
Posts: 2,126
Points: 30,511
Thanks: 28
Thanked 59 Times in 55 Posts
Images: 3
Quote:
Originally Posted by O2ShootTheJ View Post
read the side of the tire
Read what the max pressure says on the side of the tire?

2008 Red CCSB 6.4 Auto Lariat.
Stock 20's wrapped in 35x12.50R20 Toyo MT's, 3.73 gears, Nav, Backup Cam, Tailgate step, Upfitters, etc.
Mods: AFE Intake, Line-X, 20% Tint, Clear Bra, Husky Mats, Smoked Recon Mirror markers/3rd brake light, Bushwacker Pocket style flares w/ mud flaps + an aluminum Rapid Hitch (one of the best investments!)
Feel free to PM with any questions about any of my mods.

SRW Club #55
American Club #55


Last road trip-567 miles @ 20.7 mpg @ 67mpg average speed.
Superdutytd is offline  
post #9 of 16 (permalink) Old 10-26-2009, 04:45 PM
Wyoming Cowboy
 
BadSuperduty's Avatar
 
Join Date: Oct 2006
Location: Casper, Wyoming
Posts: 157
Points: 26,856
Thanks: 14
Thanked 9 Times in 7 Posts
Images: 10
Quote:
Read what the max pressure says on the side of the tire?
That's it and then you get out a calculator. I'll use Toyo MT 37-13.50-22's for an example because that's what I have.

Go weigh your truck (front and rear). Record those numbers - in my case 6200 front and 4000 rear. The side walls read on these Toyos (3420lbs. @ 65psi). Divide 65 into 3420 and you get 52.61. This means for every 1psi. of air pressure you can support 52.61lbs. of weight. Take your front weight of truck and divide 52.61 into that number (eg. 6200 divided by 52.61 = 117.8psi.). Take your answer (117.8psi) and divide by 2 because you have two tires up front which = (58.9psi). So in my case I should run at least 58-59 up font in each of my front tires.

Use the same method for rear...(eg. 4000lbs. divided by 52.61 = 76.03psi). in my case with a dually I divide four into my answer (76.03) which gives me (76.03 divided by 4 = 19psi). So each rear gets 19-20 psi. On SRW trucks 2 will be what you use as your divider.

This is how it was explained to me years ago and it works. I have 35k on my current set and they are maybe 45% worn and wear evenly. The correct air pressure will extend the life and stop that premature wear down the center of your tire (over inflation). Plus the ride is better and you can check this with the chalk method above and will see a complete foot print everytime.

Cheers,

2008 F-350 Lariat Dually;
450 wide track, Tow Boss pkg., 4.30 gears, 6" PC radius arm lift & traction bars, MX6 adj. res shocks, 37" Kumho MT's, 22" BDW Alcoas, Buckstop bumper and 16.5k warn, Defender roof rack & light cage, 4-9" Light Force lights, APM Ram air hood, AFE PG7, Spartan 310, PSer67 4" ceramic DP & 5" DOC/DPF delete, 5" MBRP Y Pipe w/8" stacks, Spearco IC, Suncoast solenoid.

NHRDA # 4758
2010 41' Cyclone Toy Hauler
2003 230 SX Stingray

I Love the smell of diesel in the morning...it smells like victory!

Last edited by BadSuperduty; 10-26-2009 at 04:48 PM.
BadSuperduty is offline  
The Following 3 Users Say Thank You to BadSuperduty For this addition to TDG:
Hollywood (10-26-2009), woodsman (10-26-2009), ZeroOne (10-26-2009)
post #10 of 16 (permalink) Old 10-26-2009, 08:45 PM
I like Pretty Girls!
 
Hollywood's Avatar
 
Join Date: Dec 2008
Location: Canada
Posts: 1,332
Points: 34,838
Thanks: 124
Thanked 63 Times in 55 Posts
As Zeroone and BadSuperduty said its NOT AS easy as reading the side, I dont get as fancy as them I jsut go by feel. I change my pressure with weight, what I am driving in (Dirt, snow,ice pavement ect) and how it feels in the corners. In the winter I can be changing my tire pressure 2 or more times a week with what I haul (Sleds) or conditions (ice or dry pavemnet). With a 13.5 wide tire it makes a big difference in keeping you out of the ditch with ice/sluch on the road.

so there isn't any "right" answer you just have to make a edumacated guess

2008 F-350 Lariat
6" Lift Riding on 37x13.5 Toyos

Canadian Club Member #12
Hollywood is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
37x13.50x20 on BMF 20x9 with Leveling Kit Only [email protected] 2008-2010 Body & Suspension 21 07-08-2009 02:40 AM
Tire pressure alex8888 2008-2010 Body & Suspension 0 05-18-2009 03:12 AM
Correct Tire Pressure for Dunlop RV Radial Rovers crappace General Ford Truck and Excursion 6 03-18-2008 02:21 AM
Will toyo 355-60-20 fit on 08? anyone got any pics with that size tire on there truck Hofmann025 2008-2010 6.4L Power Stroke 4 01-16-2008 02:55 PM
Tire Pressure ?... HawaiianSuperDuty General Ford Truck and Excursion 1 04-14-2007 01:30 AM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome