2025 Lincoln Navigator L Cobra - Conversion from 22 inch OEM wheels/tires 275/50R22 to 20 inch Costco wheels/tires 275/60R20 - Michelin Defender LTX

NavigatorPro

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2018 and 2021 Lincoln Navigator L
I just did the conversion from stock 22s to 20 inch Costco wheels

I went with Michelin Defender LTX M/S 275/60R20. This particular tire might be a little stiff for some here, but its perfect for the NYC area that I am in. Its a durable long lasting tire with excellent all weather abilities and resistance against nails. For the best smoothest ride possible you might want to look for a different tire, but this excels in most every other aspect. Nail resistance is a concern. The Defender was originally designed for off road vehicles such as the Jeep Wrangler which are mostly operated on-road with occasional off-roading.

The tire PSI used is 36 psi as that is the same tire pressure as on the Ford Expedition Max Active with 20 inch wheels.

Results:
Bumps are still there but muted and less intense versus the 22s. There is a little more dive, squat and sway, but not that much to where its a deal breaker. There was no change in the size of the tire patch which was 275 stock and its still 275 on the new wheels. What did change was the sidewall height and the pressure in the tires. In the stock 22s its 39 psi but on the 20s its 36 psi allowing for a softer cushion.

Why the switch? The electronic suspension does a great job with the 22s at muting the road but in the NYC area its filled with all kinds of imperfections challenging even the best suspension system. The electronic suspension works a lot better with the 20s at muting the ride. There is also another concern which is potholes and nails. As for potholes I have replaced entire wheels on past owned Navigators as a result of damage from falling into them. There is always a generous amount of construction going on here and things like nails fall from those trucks. The 20 inch Michelin Defender LTX will handle the potholes and on road objects a lot better than the 22s. If your area is more rural and/or has a lot more imperfections than the NYC area or maybe you encounter more off/road/winter style weather you will want to look at the 18 inch wheels/tires that are on the Expedition. The 20s seem like a good compromise.

Costco always sells excellent quality items and it was chosen as a vendor for the wheels. The wheels are actually designed for off-road and more heavy duty than typical street wheels. This is a long term investment and these wheels will be used on the 2028 Lincoln Navigator Cobra.

You will want to buy a 19 inch thin wall socket from TireRack and put that in the glove compartment.

For aftermarket wheels of this type you will want to buy this from TireRack and put it in the vehicle. I used a Gorilla wheel-lock as well which seem to be high quality. The tire installer saw my wheel-locks and told me to throw them in the garbage because of problems he had in the past. I told him I just wanted to do the right thing. When he looked at the wheel locks he told me these are of better quality than he saw in the past.





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Appreciate the intel and especially the pics. (y)

Not a bad looking wheel. I can relate to your experience. I still have a set of winter wheels I bought for our 2016 Navigator when we first got it. They were 18" wheels fitted with Blizzacks for winter commutes versus the 20" OEM wheels we used for the summer. I always thought the winter wheels/tires rode better than the summer wheels/tires.

The 18" wheels were also definitely more eye catching... the wife's co-workers often referred to the black winter wheels with chrome accents as 'Gangsta wheels'. LOL :ROFLMAO:

Seriously considering doing something similar with our 2024 Navigator L, even though it has 22" wheels. While we don't have a daily commute anymore since we're both retired, it would be mostly for a better ride on our local roads which are definitely notorious for their generally poor conditions and seemingly constant construction.
 
Appreciate the intel and especially the pics. (y)

Not a bad looking wheel. I can relate to your experience. I still have a set of winter wheels I bought for our 2016 Navigator when we first got it. They were 18" wheels fitted with Blizzacks for winter commutes versus the 20" OEM wheels we used for the summer. I always thought the winter wheels/tires rode better than the summer wheels/tires.

The 18" wheels were also definitely more eye catching... the wife's co-workers often referred to the black winter wheels with chrome accents as 'Gangsta wheels'. LOL :ROFLMAO:

Seriously considering doing something similar with our 2024 Navigator L, even though it has 22" wheels. While we don't have a daily commute anymore since we're both retired, it would be mostly for a better ride on our local roads which are definitely notorious for their generally poor conditions and seemingly constant construction.

When I set out to do mine I did it in the spirit of no speedometer error so I used 275/60R20s. I used an online tire calculator to be sure.

For 18s I would use Tirerack website and get the sizes.

For the wheels I went through Costco and they work with Velox wheels.

The only hard part is I took it to a shop where they were not used to working on this size car so they struggled. In the end they got it done but they were struggleing with it.

Both Tirerack and Costco/Velox wheels have excellent customer service and are ready with your questions. People do this all the time with them so they will have answers. TireRack even has the thin wall socket for sale which you will need for some wheels.

I believe you can get down to 17s on this truck but thats for a real bad climate like a Montana winter and rough/off road. I think 18s is as low as you should go.

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...

I went with Michelin Defender LTX M/S 275/60R20.

...
There was no change in the size of the tire patch which was 275 stock and its still 275 on the new wheels. What did change was the sidewall height and the pressure in the tires. In the stock 22s its 39 psi but on the 20s its 36 psi allowing for a softer cushion.


My understanding (and experience) is that the stock 22" tires are 285/45-22 and for the models with 20" rims it's 275/55-20. These two have essentially the same rolling radius (about 647-651 turns per mile). 275/60-20 are taller (about 630 turns per mile), so the speedometer will be a bit off (650/630 or about 3%).

Are you sure you originally had 275-wide tires with your 22" rims? If so, what was the aspect ratio and tire model?


EDIT: nevermind, I see it's a 2025. I guess they have changed it... 275/50-22 are 633 turns per mile, so you are fine with the speedometer with your new 275/60-20.

I didn't realize 2025s come with taller tires. I guess it was done to accommodate the optional 24" wheels. BTW, TireRack shows very limited selection of 285/40-24 tires, and they all have lower load rating (112).

Good call on the tire size and wheels (they appear to be forged). They are also pretty heavy for forged wheels, so they must be pretty sturdy.

I will be switching to 275/60-20 after my 275/55-20 are worn out. But I will have to recalibrate my speedometer for that.
 
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