Notices
2017 - 2022 Super Duty The 2017-2022 Ford F250, F350, F450, F550 & F600 Super Duty Pickup and Chassis Cab
Sponsored by:
Sponsored by: CARiD

Lower pressure???

Thread Tools
 
Search this Thread
 
Old Dec 10, 2017 | 10:58 AM
  #1  
Sparky570's Avatar
Sparky570
Thread Starter
|
Freshman User
Joined: Oct 2017
Posts: 46
Likes: 0
From: NE PA
Lower pressure???

Guys,,,what can I lower my tire pressure to without any bells and whistles going off???,,,17 250 cc 8ft box,,,I read alot here and seems like more often then not Guys are winding up with trip to dealer and I would like to avoid that

Thanx in Advance for input
 
Reply
Old Dec 10, 2017 | 12:55 PM
  #2  
CO Wapiti's Avatar
CO Wapiti
More Turbo
5 Year Member
Photogenic
Photoriffic
Top Answer: 1
Joined: Nov 2016
Posts: 565
Likes: 15
From: Durango, CO
Read “low psi light stays on”. It’s very recent and talks about this
 
Reply
Old Dec 10, 2017 | 12:58 PM
  #3  
tibadoe's Avatar
tibadoe
Elder User
Joined: Jul 2017
Posts: 622
Likes: 6
From: Gladys, VA
I think you can go down approximately 20 psi before the warning goes off.
 
Reply
Old Dec 10, 2017 | 01:12 PM
  #4  
1956Fatfenders's Avatar
1956Fatfenders
More Turbo
5 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Apr 2017
Posts: 628
Likes: 12
From: Madison WI
Or...change your settings in FORscan to the PSI you want to run...
 
Reply
Old Dec 10, 2017 | 01:44 PM
  #5  
RJC2's Avatar
RJC2
Laughing Gas
Joined: May 2015
Posts: 1,117
Likes: 2
From: Hatfield's side of river
I have a F350. Lowered my tire pressures to 60 psi. The "nanny" tells me that the rears are too low. I haven't had a chance to re-inflate them yet so I'm not sure how high I'll have to go to turn it off.
 
Reply
Old Dec 11, 2017 | 08:05 AM
  #6  
Poncho450's Avatar
Poncho450
Lead Driver
10 Year Member
Community Builder
Liked
Loved
Joined: Oct 2014
Posts: 5,938
Likes: 1,355
From: NY/Canada border
Originally Posted by tibadoe
I think you can go down approximately 20 psi before the warning goes off.
Not my experience. Went from stock 275/65R18 (factory sticker says 70 psi front/75 rear) to 325/65R18 (sidewall says 65 psi max, they came out of the tire shop with 61 - 62). With this 9-14 psi drop, the low pressure warning was indeed lit up.
Changed the setting to 60/60 in FORScan. All good now.
 
Reply
Old Dec 11, 2017 | 09:19 AM
  #7  
tibadoe's Avatar
tibadoe
Elder User
Joined: Jul 2017
Posts: 622
Likes: 6
From: Gladys, VA
Originally Posted by Poncho450
Not my experience.........
That's where "approximately" comes in to play. 10 psi is the max I air down my rears - 5 psi down for fronts. I like the ride empty and no warnings.
 
Reply
Old Dec 11, 2017 | 09:58 AM
  #8  
stewy604's Avatar
stewy604
Elder User
Joined: Aug 2017
Posts: 703
Likes: 1
I adjusted the thresholds in ForScan to 60 psi front and 65 psi rear for my Toyo RT 37s.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Dec 11, 2017 | 10:03 AM
  #9  
Blwnsmoke's Avatar
Blwnsmoke
Posting Guru
Joined: Jan 2011
Posts: 1,352
Likes: 4
My understanding was 10% lower then programmed.
 
Reply
Old Dec 11, 2017 | 10:08 AM
  #10  
stewy604's Avatar
stewy604
Elder User
Joined: Aug 2017
Posts: 703
Likes: 1
Originally Posted by Blwnsmoke
My understanding was 10% lower then programmed.


I think you're right...mine this morning read 54 on the front and 59 on the rear. Low pressure did not chime and my thresholds are set at 60 front and 65 rear. Ambient temps were -6 Celsius this am.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bushpilot
2017 - 2022 Super Duty
22
May 10, 2017 10:06 AM
hwm3
1999 - 2016 Super Duty
1
Jul 16, 2009 10:34 PM
Mmaxed
1999 - 2016 Super Duty
5
Nov 2, 2007 10:00 AM
oldbird1965
1994.5 - 1997 7.3L Power Stroke Diesel
8
Feb 17, 2006 10:40 PM




All times are GMT -5. The time now is 10:23 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE