Putting 2020 18” wheels on a 2018 17”

Yorkie3621

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I have a 2018 JLU sport S with the stock 17” alloys.

I just bought some gladiator 18” wheels and tires. Can I just swap them out or do I have to do anything else, like change the settings in the unconnect or anything else?

thanks





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Arterius2

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I have a 2018 JLU sport S with the stock 17” alloys.

I just bought some gladiator 18” wheels and tires. Can I just swap them out or do I have to do anything else, like change the settings in the unconnect or anything else?

thanks
You should reprogram the computer for correct tire size, with tazer or flashcal. Or your speedometer and shift points will be off.
 
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Yorkie3621

Yorkie3621

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Thanks.

is that something I can pay to borrow? I don’t imagine using it more than once so I hate to buy one. thanks
 

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Your dealer may do it for you?
 

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As long as the tire size is the same diameter going from an 17 to 18 inch wheel won't be a problem.

What size are the tires on your sport and the size on the gladiator tires you purchased?
 

SouthCo

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As long as the tire size is the same diameter going from an 17 to 18 inch wheel won't be a problem.

What size are the tires on your sport and the size on the gladiator tires you purchased?
X2, Wheel size doesn't matter it's the overall tire diameter that matters. If the tire diameter on each set of wheels are close it will be fine.
 
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Yorkie3621

Yorkie3621

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Thanks for your reply.

the current wheel/tire measures 31” Diameter and the new wheel/tire measures 32”
 

spurly

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Your speedometer will be off so unless it's something you're really particular about, I probably wouldn't worry about flashing the Jeep for the larger tire since it's only 1 inch. With the new tires, if your speedometer reads 65 you'll really be doing about 67.

Otherwise, the dealer should be able to reflash it for the new tire size for a fee.
 
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Yorkie3621

Yorkie3621

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Thank you
 

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