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Old 05-31-2019, 04:52 AM   #1
CaptnJohn
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Dually tires and wheels

When ordering a Ford dually the standard tires and wheels are 17" LR E. An option is 20" LR E. Would the option increase the payload? I don't see how as both are LR E but wondering if there is any reason to upgrade.....
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Old 05-31-2019, 06:18 AM   #2
1retired06
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Ford Dually has plenty of payload. Moving up to a 20 inch may cause you complications re hitch, level towing.
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Old 05-31-2019, 06:32 AM   #3
Walt & Vicki
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I don't think any dually trucks come with optional 20" wheels. The 20" wheels are usually on SRW trucks.
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Old 05-31-2019, 08:41 AM   #4
klewis6787
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I have the 17" wheels and don't see any advantage with the 20" and the tires would cost more on the 20" I believe from when I had a smaller truck with the 20" wheels.
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Old 05-31-2019, 10:03 AM   #5
CaptnJohn
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Originally Posted by Walt & Vicki View Post
I don't think any dually trucks come with optional 20" wheels. The 20" wheels are usually on SRW trucks.
Correct, they came on my F350 Lariat and are listed on the build site, but only for srw. Big wheel wells, tiny tires.
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Old 06-01-2019, 05:54 AM   #6
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I believe you can get the 19.5 HDR ties with Alcoa rims, same as on the F-450.
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Old 06-01-2019, 05:56 AM   #7
CaptnJohn
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I believe you can get the 19.5 HDR ties with Alcoa rims, same as on the F-450.
Yes they are an option being considered.
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Old 06-01-2019, 05:59 AM   #8
Renegade1LI
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I had them on my last two trucks, filled out the wheel wells much better and the tires lasted 75k miles. I am getting them in the next one, my wife hates the look of the 17s.
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Old 06-01-2019, 06:13 AM   #9
Walt & Vicki
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Rickson and Vision are 2 brands of wheels that are available in 19.5 that are available in 8 lug. Also, you can get 19.5 tires in the same overall diameter as your 17's so as to not affect your final drive ratio.
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Old 06-01-2019, 06:16 AM   #10
CaptnJohn
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The drive ratio was my thought as I'm pulling a 16+K fifth wheel.
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Old 06-01-2019, 01:12 PM   #11
CalandLinda
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Can't tell you without knowing the two tire's designated sizes.

Dual rear wheel/tire spacing is a critical element and should be done by well trained installers when changing designated sizes.
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Old 06-01-2019, 09:12 PM   #12
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An example of overall diameter is; 225/70x19.5 is only about a 1/2 inch taller than a factory size 245/75x17, which Ford has put on their dually truck for a few years now. I will be upgrading to the 19.5 on my Ram in the near future.
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Old 06-02-2019, 06:12 AM   #13
Renegade1LI
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I would think if it was a factory upgrade there should be no problem.
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Old 06-02-2019, 06:48 AM   #14
Walt & Vicki
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Not a factory upgrade on the F-350. Stock on F-450
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Old 06-02-2019, 07:42 AM   #15
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I just checked, you're correct only 450,i forgot my last truck was a 450 kr and the wheels were stock, my mistake.
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Old 06-02-2019, 10:43 AM   #16
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Not a problem. We're all here to learn and share knowledge.
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Old 06-05-2019, 01:35 PM   #17
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Ford did put the 17 inch tires/wheels on F450s for a couple of years (I believe 2013/2014) - they have a higher speed rating than the 19.5s. However, I hope no one is pulling at 85 mph or higher; 70 - 75 seems plenty high enough for me -- and that is driving solo on Interstate. Tires are speed rated at 75 mph by Continental.
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Old 06-06-2019, 03:54 PM   #18
DebNJim B
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Don't know about dually but my 2017 F350 SRW had a choice of 17 or 20. Overall height was the same as the 20 was a low profile. Dealer said there was really no difference except the cost of replacement and some thought the 20's look better. 17's fill the wheel well just fine. You'd have to read the load on the tire to see if payload is any different.
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Old 06-13-2019, 08:44 PM   #19
Slufoot733
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Just went on Ford Super Duty Build & Price site.
F-350 dually is 17" wheels ONLY!
F-450 is 19.5" tires ONLY!
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Old 06-14-2019, 07:18 AM   #20
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Quote:
Originally Posted by DebNJim B View Post
Don't know about dually but my 2017 F350 SRW had a choice of 17 or 20. Overall height was the same as the 20 was a low profile. Dealer said there was really no difference except the cost of replacement and some thought the 20's look better. 17's fill the wheel well just fine. You'd have to read the load on the tire to see if payload is any different.

There is a real difference for someone pulling a heavy long 5er. There is less sidewall flex so they are more stable.
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