Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Display Modes
 
Old 01-05-2022, 10:46 AM   #1
Member
 
happycampingcouple's Avatar
 
Join Date: Jan 2018
Location: BOISE IDAHO
Posts: 48
Gravel road tire pressure?

2009 extended e350, 245 75 16 bfg ko2, 2wd, 5.4

what should i air down to for gravel rutted roads?

Thanks all!!
__________________

happycampingcouple is offline   Reply With Quote
Old 01-05-2022, 11:30 AM   #2
Senior Member
 
deserteagle56's Avatar
 
Join Date: Jan 2012
Location: Middle of Nevada
Posts: 227
Quote:
Originally Posted by happycampingcouple View Post
2009 extended e350, 245 75 16 bfg ko2, 2wd, 5.4

what should i air down to for gravel rutted roads?

Thanks all!!
No way to accurately answer that without knowing how much weight is on front/rear axles (need scale tickets!) and the ply rating of your tires.
__________________

__________________
Worshipper of Wild Country
2007 Quigley V-10 on 33s with 4.56 gears (Toyhauler)
deserteagle56 is offline   Reply With Quote
Old 01-05-2022, 11:40 AM   #3
Member
 
happycampingcouple's Avatar
 
Join Date: Jan 2018
Location: BOISE IDAHO
Posts: 48
Understood. The van is probably 7000 lbs and 10 ply tires
happycampingcouple is offline   Reply With Quote
Old 01-05-2022, 06:16 PM   #4
Senior Member
 
Join Date: Oct 2007
Location: Indy
Posts: 544
OK, I don't do any rock crawling, but have been down some pretty rough forest service roads, etc. Lots of washboard roads also. Maybe I'm crazy (likely), but we only aired down once in 13 years and 175,000 miles.
__________________
2008 Ford E-350 Quigley 4x4 V10 - 164,000 miles
RB50, PH Top, Dual AGM Group 27 Deka, 2000 Tripplite Inv., No Propane or Water Systems
Van Weight 8,100 pounds, added one rear leaf spring, BFG AT KO LT265/70R17 E Tire press 50psi.
Steve_382 is offline   Reply With Quote
Old 01-05-2022, 06:19 PM   #5
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,743
Drop them to like 20-25. Much smoother ride, less slipping (which then creates less washboard). You don't have to do it, but it will be noticeably more pleasant ride.. I do it if I'm going to be on a dirt road for a while. If I'm ducking into a campsite and on dirt for 30 mins I'll skip it:
rallypanam is offline   Reply With Quote
Old 01-05-2022, 10:20 PM   #6
Junior Member
 
Join Date: Dec 2021
Posts: 1
Awesome. Thanks for the info!!
Happycamping Mike is offline   Reply With Quote
Old 01-06-2022, 05:22 PM   #7
Senior Member
 
arctictraveller's Avatar
 
Join Date: Mar 2013
Posts: 3,859
Lower pressure will definitely improve the ride over rough roads, reduce the possibility of a puncture and increase traction too. The lower you go, the better results. Some that do extreme off roading will go down as low as the mid teens or less (search for Chris Ridgway to see some of his adventures in his Agile TTB van) There are some caveats though. First, if you go too low you can cause the tire bead to come off the rim. Secondly you need to have a way to air them back up when you get to the pavement because you don't want to run regular road speeds with low pressures as it can cause the tires to possibly over heat. Having said all that, I'll routinely run pressures in the 20's off road. As far as what to run on pavement, there is no reason to run the maximum pressure listed on the tire unless you are at the tires maximum weight rating. Here is a good reference. https://tirepressure.org/
__________________
Arctic Traveller
KC6TNI
2001 GTRV
Advanced 4wd
Agile Ride improvement package
arctictraveller is offline   Reply With Quote
Old 01-06-2022, 10:51 PM   #8
Senior Member
 
Join Date: Jul 2016
Location: Seattle, WA
Posts: 346
My van is a 7.3 on 35” tires but I run 20# usually off road, will drop lower if needed
Nrobert10 is offline   Reply With Quote
Old 01-08-2022, 08:43 AM   #9
Junior Member
 
Join Date: Jan 2022
Location: kansas
Posts: 10
With that size tire you can go to the tire pressure charts and determine what psi according to the weight on the tires.

My 08 E350 hightop has same size tires you list and wt is 3600# rear and 3000# front mostly empty with half tank gas. I use 80% rule so I'm about 40 front and 50 rear, I could go lower by 5-10 psi.
Dearranged is offline   Reply With Quote
Old 01-13-2022, 11:45 AM   #10
Senior Member
 
DosMars's Avatar
 
Join Date: May 2012
Location: Long Beach, Ca.
Posts: 230
I have my Staun tire deflators dialed in at 35. Takes the bump out of the road which helps keep the mdf cabinetry from rattling to pieces...
May try going down a bit based on what others are bringing theirs down to.
__________________

__________________
Test test test, this is where the signature goes
DosMars is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 06:09 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
×