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Open Roads Forum  >  Tow Vehicles

 > F-150 20” wheels

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rmnpcolorado

Madison, WI

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Posted: 10/28/20 01:30pm Link  |  Quote  |  Print  |  Notify Moderator

When I look at Ford’s towing guide for the 2018 F-150 SuperCrew 145” wheelbase 4WD with the 3.5L eco boost twin turbo and 3.55 gear ratio, there are three options:
GCWR of 16,100# = 10,700
GCWR of 16,700# = 11,000 (Limited package only& max tow package)
GCWR of 18,100# = 12,700 (requires 20” wheels & max tow package)

A) is the GCWR figure available somewhere that I am not finding or is it a calculation that I need to do?
B) is it really just by jumping to the 20” wheels adds a hypothetical 2,000# in tow capability? There has to be more to it than that. If not, how is that possible?

No, I’m not anywhere close to that. 10,700# would handle our trailer just fine. But to me, additional cushion is always better.


2020 Ford F-150 3.5L w/Max Tow
2011 Jayco X213

Lwiddis

Williams AZ area

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Posted: 10/28/20 01:39pm Link  |  Quote  |  Print  |  Notify Moderator

I wouldn’t buy an F150 without their max tow package...and I’d opt for the 12700.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watt solar-parallel & MPPT, Trojan T-125s. TALL flag pole. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist14 yr. Army vet-11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


MitchF150

Puyallup, WA

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Posted: 10/28/20 01:46pm Link  |  Quote  |  Print  |  Notify Moderator

I've got the older Ecoboost F150 (2013) and it has the 20" wheels and max tow package. But, they are different for your era of Ecoboost..

I'm not really sure what the 20" wheel package does? Even the P OEM tires exceeded the rear axle rating of #4050. I did get some "XL" rated 20" tires for it and that even exceeds it even more..

I'm towing a #7000 GVWR TT and that's about all I want to tow with my F150 and still have a comfortable tow.. Sure, it has all the power you can need/use... But, it's still just a light duty truck, no matter what that 'max tow' means...

Good luck! Mitch
[image]


2013 F150 XLT 4x4 SuperCab Max Tow Egoboost 3.73 gears #7700 GVWR #1920 payload. 2019 Rockwood Mini Lite 2511S.

Grit dog

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Posted: 10/28/20 03:20pm Link  |  Quote  |  Print  |  Notify Moderator

Nothing meaningful if drivetrain is the same, IMO.
That's why it's futile to live and die by the "ratings."


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
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Groover

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Posted: 10/28/20 04:46pm Link  |  Quote  |  Print  |  Notify Moderator

Ford doesn't specifically tell us why 20" wheels have a higher tow rating but we do know that part of industry testing procedure is stability. So the best guess that I have is that the larger wheels are stiffer and therefore more stable.

The interesting thing is that the F250 comes with 18" wheels and the exact same size tires as they put on the F150 but has a much higher tow rating. The F250 tires are LRE whereas the F150 comes with either P series or LRC tires.

Maybe the extra 4 ply rating is enough to justify the difference. But we will probably never know for sure.

BB_TX

McKinney, Texas

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Posted: 10/28/20 06:02pm Link  |  Quote  |  Print  |  Notify Moderator

Two tires from the same manufacturer, same style, same tire line, same load range, with one 18” and the other 20”, the 20” will have a higher load rating than the 18”. But not that much difference. Maybe next higher load range tire on that package? Or some slight difference in suspension? Don’t know.

philh

Belleville MI

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Posted: 10/28/20 07:41pm Link  |  Quote  |  Print  |  Notify Moderator

Groover wrote:

The F250 tires are LRE whereas the F150 comes with either P series or LRC tires.

Maybe the extra 4 ply rating is enough to justify the difference. But we will probably never know for sure.

I went from P to 10ply tires on my F150. It was a HUGE difference. I don't even bother tightening sway on the WD hitch. Semi's passing me would cause a little wiggle as the front of the semi was even with the hitch. No longer feel that wiggle.

JIMNLIN

Oklahoma

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Posted: 10/28/20 08:34pm Link  |  Quote  |  Print  |  Notify Moderator

Ford can assign any numbers they want for a GCWR/GVWR/GAWRs. GCWR numbers aren't required to be placarded on LDTs at this time.
Ford markets around 11 different GVWR packages and 5 GAWR packages on the F150 trucks. You would have to chase down all the mechanical specs (std and optional equipment) on the three tow rating you show. That should give you a better idea of the differences... if any. fleet ford clicky


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

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mkirsch

Rochester, NY

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Posted: 10/29/20 06:19am Link  |  Quote  |  Print  |  Notify Moderator

It would be easy to determine by going to a lot and looking, that the load rating of the 20" tires is higher than that of the 16"/17"/18" options.


Putting 10-ply tires on half ton trucks since aught-four.

StirCrazy

Kamloops, BC, Canada

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Posted: 10/29/20 08:39am Link  |  Quote  |  Print  |  Notify Moderator

the 20" tires handle more weight, to get the 11500lb payload in my f350 you needed the 20" wheels.

Steve


2014 F350 6.7 Platinum
2016 Cougar 330RBK

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