How much do you "de-rate" your trucks for towing? - Page 2 - Ford Truck Enthusiasts Forums

Notices

How much do you "de-rate" your trucks for towing?

Reply

 
 
 
  #16  
Old 02-11-2018, 11:13 AM
Twitchyleprechaun's Avatar
Twitchyleprechaun
Twitchyleprechaun is offline
Not So Nice Leprechaun
Join Date: Jul 2014
Location: All over, but mainly MD
Posts: 1,605
Twitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputation
Originally Posted by rvpuller View Post
It's the rating the manufacture uses for conventional and 5th wheel towing, it uses different motor, rear gear and truck configurations to come up with towing ratings.

Denny
I was being facetious. But that has to the the best damn explanation of what a tow rating is that I have ever heard.

 
Reply With Quote
  #17  
Old 02-11-2018, 02:10 PM
TJReams's Avatar
TJReams
TJReams is offline
Elder User
Join Date: Sep 2016
Location: Abilene TX.
Posts: 912
TJReams has a great reputation on FTE.TJReams has a great reputation on FTE.TJReams has a great reputation on FTE.TJReams has a great reputation on FTE.TJReams has a great reputation on FTE.
Originally Posted by Twitchyleprechaun View Post
I was being facetious.

I can't believe that trailer only has 2 axles, it must not be as heavy as it looks!
 
Reply With Quote
  #18  
Old 02-11-2018, 02:43 PM
Twitchyleprechaun's Avatar
Twitchyleprechaun
Twitchyleprechaun is offline
Not So Nice Leprechaun
Join Date: Jul 2014
Location: All over, but mainly MD
Posts: 1,605
Twitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputationTwitchyleprechaun has a superb reputation
Originally Posted by TJReams View Post
I can't believe that trailer only has 2 axles, it must not be as heavy as it looks!

Fully Loaded it came out to 13,340.
 
Reply With Quote
  #19  
Old 02-12-2018, 09:10 AM
H4Racing
H4Racing is offline
Freshman User
Join Date: Dec 2017
Posts: 38
H4Racing is starting off with a positive reputation.
I don't derate at all.....but I will do a lot of research and spend a lot of time to make sure that my rig is comfortable and safe (knowing "safe" means different things to different people).

I currently tow a 31' toy hauler loaded to about 7700# with a 17 F250 PSD. As you can imagine, it is within all specs and tows like a dream.

However, I used to tow the same rig with an 08 Escalade ESV AWD (Tow rating of 7800#, payload 1300). Doing some research, I found that this platform was the same as the Max Tow package in the 1500 trucks with a different rear suspension. I also went to the scales and knew what weights I was over and by how much. After doing a lot of trailer/hitch setup and taking the time to learn how loading affected the handling, I was able to tow that trailer without sway control in every environment. Never had one "white knuckle" event or trip. Granted, I might have had to stop once or twice to redistribute load during my learning times, but I was able to tow at 105% of this vehicle's capacity safely and arrive pretty rested. The only issue I had was on really hot days (>100) the temps would creep up on long hills.

Now some will say "it tows it fine, but what about stopping or emergency maneuvers?" (i even saw a post to take it to an empty parking lot and basically take it around a course). The rebuttal for that is simple: don't drive like a jack***. I set the cruise to 65, anticipate problems before they happen, and don't do anything stupid. A cognizant driver that is at the limit or a little over is still way safer than one that is not and within their specs.
 
Reply With Quote
  #20  
Old 02-13-2018, 11:18 AM
SDcrewzer's Avatar
SDcrewzer
SDcrewzer is online now
Posting Guru
Join Date: Jan 2017
Location: Mills River, NC
Posts: 1,139
SDcrewzer is gaining momentum as a positive member of FTE.
Exclamation

For example, from the 2017 Ford Towing Guide:
Truck A) F150 Supercrew 4x4 3.5 EB Max tow can be rated to tow up to 11,700 lbs.
Truck B) F150 Supercrew 4x4 5.0L V8 can be rated to tow as LITTLE as 8900 lbs. As far as I know all F150's have the same brakes, frame, hitch etc.
Truck C) F250 Crew Cab 4x4 with 6.2L V8 can be rated to tow as little as 12,500.
The problem (to me, anyway) is the specs above are not absolute, as Ford has applied several conditions to their applicability.

Examples:

1) The maximum trailer weight ratings assume a minimally-equipped truck (mandatory options only) plus a driver and one passenger at 150 lbs. each. Additional options, heavier- and/or additional passengers, and cargo must be subtracted from the maximum trailer weight (ref 2017 Tow Guide pg 17).

2a) The Super Duty specs assume maximum frontal areas of 75 sq. ft for 5th wheel- and gooseneck towing, and 60 sq. ft. for other trailers. Otherwise, "Exceeding these limitations may significantly reduce the performance of your towing vehicle." (ref 2017 TG pg 15).

2b) More on frontal area considerations (ref 2017 TG pg 39):

Powertrain/Frontal Area Considerations
The charts in this Guide show the minimum engine
size needed to move the GCW of tow vehicle
and trailer.
• Under certain conditions, however, (e.g., when
the trailer has a large frontal area that adds
substantial air drag or when trailering in hilly
or mountainous terrain) it is wise to choose a
larger engine
• Selecting a trailer with a low-drag, rounded
front design will help optimize performance and
fuel economy
3) Altitude (ref 2017 TG pg 39):

High Altitude Operation
Gasoline engines lose power by 3-4% per 1,000 ft.
elevation. To maintain performance, reduce GVWs
and GCWs by 2% per 1,000 ft. elevation starting at
the 1,000 ft. elevation point.
4) Fuel grade (ref 2017 Super Duty OM v3 pg 185):

Your vehicle is designed to operate on
regular unleaded gasoline with a minimum
pump (R+M)/2 octane rating of 87 or
regular unleaded gasoline blended with a
maximum of 85% ethanol (E85).
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. We do not recommend
these fuels.
For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer.
I've towed up to 10K feet elevation, and only with normally-aspirated gassers. Accordingly, I tend to limit (derate) my GCW to ~75% of the "maximum" spec.

HTH,
Jim / crewzer
 
Reply With Quote
  #21  
Old 02-13-2018, 12:08 PM
HRTKD's Avatar
HRTKD
HRTKD is online now
Postmaster
Join Date: Oct 2015
Location: Somewhere south of Denver
Posts: 4,847
HRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant futureHRTKD has a brilliant future
Jim, one of the towing guides I found online only goes to page 10. I think this is the one you were looking at: https://www.fleet.ford.com/resources...de_r6_Nov8.pdf

I agree with you that the specs are not absolute. I generally use the trailer weight number (GVWR) as-is because A) it can be challenging to figure out how to adjust it down and B) the cargo capacity number for the truck is usually passed long before the trailer weight is exceeded. That's not to say the trailer can weigh as much as you want as long as you don't exceed the cargo capacity, you still need to stay under the trailer weight spec.
 
Reply With Quote
  #22  
Old 02-14-2018, 06:37 AM
SDcrewzer's Avatar
SDcrewzer
SDcrewzer is online now
Posting Guru
Join Date: Jan 2017
Location: Mills River, NC
Posts: 1,139
SDcrewzer is gaining momentum as a positive member of FTE.
Lightbulb

Yes, I was looking at the complete 39 page Tow Guide. My pdf copy includes multiple revision dates (9/16/16, 9/28/16, 10/18/16). Like the Sales Brochure, there appears to be both "short" and "complete" versions.

Regards,
Jim / crewzer
 
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BPCheeta
Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups
9
06-09-2017 12:59 PM
Torklift Sheryl
Vendor Specials, Discounts, Product Announcements & Group Buys
0
02-17-2017 01:08 PM
Forresth
2014+ Transit
3
01-22-2017 09:27 AM
automaticlee
1987 - 1996 F150 & Larger F-Series Trucks
5
10-05-2016 07:38 PM


Thread Tools
Search this Thread
Quick Reply: How much do you "de-rate" your trucks for towing?


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.