2012 OEM wheel upgrade
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Laughing Gas
Joined: May 2007
Posts: 812
Likes: 3
From: Mad River Valley
2012 OEM wheel upgrade
Hello,
I have an XLT with the 18 inch factory rims. There is a set of the 2012 20 inch OEM rims/tires for sale near me that I'm thinking about buying. Do they just bolt right on or do I have to do something with TPMS? Thanks
I have an XLT with the 18 inch factory rims. There is a set of the 2012 20 inch OEM rims/tires for sale near me that I'm thinking about buying. Do they just bolt right on or do I have to do something with TPMS? Thanks
Senior User
Joined: Aug 2012
Posts: 378
Likes: 0
From: New Hampshire
You can get 20"s on the truck as OEM so it should be no problem
They say a 6.7" or 170mm bolt circle for a SRW
If you have TPM's on current tires and not on the 20"s you'd probably want to add/swap into the new tires
They say a 6.7" or 170mm bolt circle for a SRW
If you have TPM's on current tires and not on the 20"s you'd probably want to add/swap into the new tires
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Laughing Gas
Joined: May 2007
Posts: 812
Likes: 3
From: Mad River Valley
I just checked Ford's website, it says that TPMS is standard on 2012 XLT's. So that means that I have it already. Can I swap out the tires myself or am I better off going to a tire place and letting them deal with the TPMS?
Lead Driver
Joined: Nov 2005
Posts: 5,225
Likes: 4,239
From: Kaysville Utah
The TPMS are inside the tires. So as long as you have the proper tools to break down and remount your tires, You could do it.
What are you paying for the 20" rims? I bought a set of take of tires from the local Ford dealer and they came with the Lariat Chrome 20" wheels, All I wanted was new tires, But dealer said the price he quoted me was with or with out the rims. Same price. So I took them with the rims and figured I get something out of selling the rims. Need to figure out a fair price and get them sold.
What are you paying for the 20" rims? I bought a set of take of tires from the local Ford dealer and they came with the Lariat Chrome 20" wheels, All I wanted was new tires, But dealer said the price he quoted me was with or with out the rims. Same price. So I took them with the rims and figured I get something out of selling the rims. Need to figure out a fair price and get them sold.
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Laughing Gas
Joined: May 2007
Posts: 812
Likes: 3
From: Mad River Valley
The 18's have a diameter of 33.2 inches (11.2 width)
The 20's have a diameter of 34.4 inches (11 width).
Does this mean that my speedometer is going to be slighty off?
I would be buying the tires and rims together so they just need to be put on the truck.
The 20's have a diameter of 34.4 inches (11 width).
Does this mean that my speedometer is going to be slighty off?
I would be buying the tires and rims together so they just need to be put on the truck.
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Sick 'n Tired
Joined: May 2006
Posts: 2,969
Likes: 47
From: League City, TX
Yes, your speedo will be off. You will need a programmer or a trip to the dealership to update the PCM. At over 1 inch diff it might be more than "slightly" off.
Senior User
Joined: Jan 2012
Posts: 122
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At 34.4" diameter, the circumference is 108". At 33.2, it is 104". 4"/104" = 3.8% more distance traveled with each rotation than stock. At 60 mph indicated, you would actually be travelling at (60*1.038) = 62.3 mph.
Your opinion of the importance of your speedometer's correction may vary.
Your opinion of the importance of your speedometer's correction may vary.
Lead Driver
Joined: Nov 2005
Posts: 5,225
Likes: 4,239
From: Kaysville Utah
It's not a big deal for the dealer to reset it for the OEM 20" tires. But they can't always reset the sepeed for tires bigger than the OEM tires.
I don't know if it is a problem resetting the computer if you have the 18" and go to the 20" Just ask your dealer.
I don't know if it is a problem resetting the computer if you have the 18" and go to the 20" Just ask your dealer.
Elder User
Joined: Apr 2010
Posts: 754
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To the OP be aware that if the dealer changes the tire size to a size that was not available from the factory on your truck it will throw a CEL. Many of us with 18" wheels and 3.31 axles are running into this.