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re5513

20" or 18" factory wheels. Pros and Cons.

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For a 2016 Lariat 4x4 Crew Cab, there are two tire sizes you can get with associated rims:

 

One is 275-65 R18

The second option is: 275-55 R20
My thoughts are the the 20" wheels/tires are probably on the order of 6-9 lbs heavier per tire and they have a lower sidewall height compared to the 18" tires/wheels which could make the 20" tire/wheel more at risk for being dented in off road applications. That's the theory anyway.
What I want to ask the forum is real-world experience. Has anyone actually used a 20" rim/tire in off road trails and decided that they were less optimal compared to the factory 18" wheels? I'm probably leaning toward the 18" rims/tires at this point but wanted to see what kinds of comments based on experience I might receive before I make a final decision.
Thanks much!
re5513

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>20's look nice, 18's ride better.

 

Agreed. One idea I had this AM is to use up the 20" tires and then when it's time to replace them, get new off-road rims along with new tires and scale down to 18"s. Do you know if there would be any reprogramming required? The circumference of both setups (stock 20" with 275-55R20 tires versus stock 18" rims with 275-65R18 tires) is virtually identical so I'm guessing then that no re-programming would be required to accommodate the different tire/wheel sizes. Would you agree?

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No reprogramming as long as the circumference is close to the same diameter.

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Thanks. I appreciate the information.

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Last time I priced out tires, the 18s were slightly cheaper and I found there was more options for the 18s as well.

 

That may just be something unique to my area however.

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I have 20" on my MKX and switch out to 17" snows that are the same diameter....no problems with programming.

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I would say go for the 20s simply because it looks better. As f150s have a really tall tire despite the size of the wheel, you will be okay with either. 18 inch wheels do provide a really soft ride tho

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I like 18's myself. I like the softer ride.

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Does anyone know if the wheel size changes the tow capacity ratings on the newer F-150s?  In our previous 06 Ford, we had a lower towing capacity due to the larger wheel size that came stock with the truck.  I am looking to upgrade to a 2013 or newer and want to keep a higher tow capacity for hauling our camper.  Thanks.

 

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Around me I’m able to find 18” takeoff tires for pennies on the dollar, if your cheap like me go with the 18s

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I have the 20's with Nitto Ridge Grapplers and like them so far.

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From what I have seen, 20s are for show trucks that just want to look good and 17s/18s are for ones that really go offroad.

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20's handle a lot better on the street, but give up a bit of ride. 18's give better fuel economy, but 20's look better. I was very happy after swapping my 18's for 20's. (also lowered it 2/4)

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I had the choice of 20s or 18s with the Sport package and I thought the 18s looked a lot better and had more tire choices.  But there is very little ride difference due to the way Ford tunes the suspension to compensate.

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I like the 20's but there are fewer tire options for that size. 

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