F150 20 inch wheels vs 18 inch

Groover, you should do a little reading and arithmetic regarding the various capabilities of different model light duty trucks and then you’ll see why LT tires don’t need to be spec on 1/2 tons for the most part....
That said I also believe that LR D or E tires are a nice match for 1/2 tons that see heavy use or abuse to tires. It’s a good kind of overkill in some situations. Not the least of which is tire life if one is counting cost benefit ratio.
I don’t believe in the poor ride of a E tire on a 1/2 ton thing. Aired up or down to the right psi for the load negates that claim. Unless you’re really wanting your 400hp trailer towing 1/2 ton to ride like a ‘75 Buick. In which case, you should also remove the shocks from your F150 and throw them in the garbage for the full effect!

All this said, I’ve towed and hauled a lot of “stuff” with half tons on OE P tires, well over all of the book “ratings” and they work. They even work better when you give an a boost in pressure to 55-60psi!! Oh the horrors...

BenK wrote:

Groover wrote:
snip...
I would like to see the reasoning on why Ford likes LT tires on Super Duty trucks but not F150 other than ride quality.

Cost...LT's cost more than same size passenger (P) tire

And many place ride quality higher than most anything else on their have to have list

X2...and Fords F150HDPP with its 4800 rawr comes OEM with LT tires per FMVSS requirements for a tire with a minimum 2400 + lb load requirements.
I wouldn't buy a 1/2 ton with LT E tires on it and from experience of having used LT E on 1/2 ton trucks I don't want or need or will I buy them pulling my 10k car hauler with 9460 lbs on the trailers axles.
P tires today use 44-51 psi for max pressures.
I have a set of LT C at 50 psi off road tires for the wifes 1500 4wd chevy for off road/pasture/muddy work sites. But for towing a 10k trailer the OEM P size at 44 psi work better towing.

Groover wrote:
snip...
I would like to see the reasoning on why Ford likes LT tires on Super Duty trucks but not F150 other than ride quality.

Cost...LT's cost more than same size passenger (P) tire

And many place ride quality higher than most anything else on their have to have list

^ ???

"Doesn't seem like a Big mystery to me. 20" wheels mean you can pull more, doesn't mean you can carry more. Like I said, I'll run out of payload long before I hit max trailer."

You can get 17" tires on an F250 that are rated to both pull and haul more. As I said earlier, for towing I would rather have 18" LT tires than 20" P series. I would like to see the reasoning on why Ford likes LT tires on Super Duty trucks but not F150 other than ride quality.

Fords "max tow" option for the F150 doesn't help the truck carry more weight.

Available on XL, XLT, LARIAT, King Ranch®, and Platinum models.

Includes:
• 3.55 Electronic-locking rear-axle
• 4-pin/7-pin wiring harness
• 36 Gallon fuel tank
• Auxiliary transmission oil cooler
• Engine oil cooler
• Class IV trailer hitch receiver
• Pro Trailer Backup Assist with Tailgate LED
• Smart Trailer Tow Connector (standard on LARIAT and higher)
• Integrated Trailer Brake Controller
• Upgraded front stabilizer bar
• Upgraded rear bumper

Requires 3.5L EcoBoost® engine.
Does not include Trailer Tow Mirrors. Trailer Tow Mirrors are a standalone option and must be ordered separately.
Max GCWR/Max Tow achieved on SuperCrew® when equipped with 20-inch Wheels. This configuration will also come equipped with max springs, steering gear, and upgraded stabilizer bar.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

#1. 7850 gvwr...4800 rawr....approx 2500 lb in the bed payloads.

#2. 7600 gvwr...4550 rawr... approx 2200 lb in the bed payloads

#3. 7050 gvwr...4050 rawr... approx 1800 lb in the bed payloads

#4. 6800 gvwr...3800 rawr...approx 1500 lb in the bed payloads.
All payloads are a estimate using rawr capacities and the trucks empty rear axle weights.
"MAX TOW" option can be had on each of the above gvwr/rawr packages and like I said it doesn't help the truck carry more weight.

OP, sorry to hear you're going through a rough stretch.
The answer to your question is either wheel option is 100% fine and neither will afford you any measurable advantages or disadvantages in your application.
Despite what the geezernet quorum like to "think."

Groover wrote:

nickthehunter wrote:

Groover wrote:

nickthehunter wrote:
I would special order and get the HDPP package. Actually, that's what I did do, to me, its worth the wait. I rented a cheap car while I waited. Best decision I ever made, got exactly what I wanted and nothing I didn't need.
P.S. The HDPP package doesn't include with 20" wheels.

For some reason the most towing that you get with HDPP crew cab 4WD is 11,300lbs while a similar truck without HDPP and 20" tires is rated for 12,700lbs. Just in case that matters to you.

That is really odd to me for a variety of reasons.

I don't know didn't look that up. You get more payload with the HDPP. Basically because you get a beefier frame. I'm more concerned about payload. I'll never get to max trailer before I run out of payload.

I could see the two trucks have the same GCWR if they are drivetrain limited but the max GCWR is 18,600lbs without HDPP and drops to 17,100lbs with HDPP. What is in the HDPP that leads Ford to reduce GCWR? That is the real mystery to me.

Doesn't seem like a Big mystery to me. 20" wheels mean you can pull more, doesn't mean you can carry more. Like I said, I'll run out of payload long before I hit max trailer.

Mickeyfan0805 wrote:

Groover wrote:
Can you tell us what the other upgrades are? I haven't seem anything about them.

It actually seems to generate a lot of confusion. If you look on the towing guides it will state that the max tow capacity is only possible with 20" wheels, but it does not say any more than that. This leads many to believe it is based solely on the smaller sidewall leading to less flex. This was my impression as well, and my clueless dealer told me no different when I purchased.

It is not until you dig into the order guide that you see a bit more. There is a small note under the "Max Trailer Tow Package" line that says, Note: Max GCWR/Max Tow only achieved on SuperCrew® equipped with 20” Wheels. These trucks will also
come equipped with max springs, steering gear and upgraded stabilizer bar for this configuration.

While I don't need the max tow rating, and have no issues with power, these adds would have been a nice boon to truck stability had I done enough homework to understand before buying. They had the truck I wanted with both the 20's and the 18's. I didn't want to spend a thousand bucks on aesthetics, so I didn't. If I knew then...

That is interesting. Are the max springs as sturdy as what comes with HDPP or is that a different category? Why do you need stronger steering when the directions for setting up a weight distributing hitch tell you to unload the front end? Even a 5th wheel would add minimal weight to the front. Why would the weight applied to a trailer hitch (typically below the tailgate) require a beefed stabilizer bar? When I added air bags to my truck to help managed tongue weight I first made the airbags independent but didn't like the ride from the reduced articulation so I re-plumbed the bags to be on the same channel and allow articulation.

The last two sound like they would be useful on a slide-in camper but not for trailer towing. I could really see a use for LT tires though. And they are not available from the factory in 20" for the F150.

nickthehunter wrote:

Groover wrote:

nickthehunter wrote:
I would special order and get the HDPP package. Actually, that's what I did do, to me, its worth the wait. I rented a cheap car while I waited. Best decision I ever made, got exactly what I wanted and nothing I didn't need.
P.S. The HDPP package doesn't include with 20" wheels.

For some reason the most towing that you get with HDPP crew cab 4WD is 11,300lbs while a similar truck without HDPP and 20" tires is rated for 12,700lbs. Just in case that matters to you.

That is really odd to me for a variety of reasons.

I don't know didn't look that up. You get more payload with the HDPP. Basically because you get a beefier frame. I'm more concerned about payload. I'll never get to max trailer before I run out of payload.

I could see the two trucks have the same GCWR if they are drivetrain limited but the max GCWR is 18,600lbs without HDPP and drops to 17,100lbs with HDPP. What is in the HDPP that leads Ford to reduce GCWR? That is the real mystery to me.