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The tires on my 2014 SXT are in need of replacing and I want to do something i've been wanting to do for awhile now: Upgrade to 20" wheels. I currently have the standard 18" Rims with 235/55R18 tires on. I'm looking into new rims/tires and just want to make sure i'm not over simplifying this.

I looked into Rims that fit this car. I found a set of OE Creation - 181 rims that I want to put on and a set of tires.

My questions are basically is it just as simple as putting the new wheels on and driving?
What else do I need to do to the car for this to work.
Are the specifications below going to work for my car or am I missing something?

Any and all information is appreciated! Thank you in advance!

two different size of rims, whats the difference and which works for my car?
Rims:
  • 20" Diameter (20" x 9") [+18 Offset, 5x114.3 Bolt Pattern, 71 .5mm Hub]
  • 20" Diameter (20" x 9") [+20 Offset, 5x114.3 Bolt Pattern, 71 .5mm Hub]
Two different size of tires?
  • 245/45ZR20 Y
  • 255/45ZR20 Y
Thank you in advance!
 

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The stock 20" wheels are 5x115 bolt pattern, make sure you are specifying that. Stock 20" wheels on a 2014 SXT are 20x8 +24 offset. I think with the 20x9 you listed, you'd be good with the +20 all around. You can go as wide as 275/40R20 tires on all 4 if you want a wider tire, but either a 245/45 or 255/45 will also fit. If I were moving to 20x9 wheels, I'd go 275/40R20 all around

20x9 5x115 +20mm

Your TPMS are 5 years old, it may be wise to get new ones as battery life is said to be around 7 years. Other than that, you just install new wheels and tires and drive ;)

A Guy
 

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Also the factory 20 inch wheel cars had a 3.07 axle ratio in place of the 2.65 ratio to get back some of the acceleration that you will lose by going to the bigger wheels and tires.

They also had the bigger R/T brakes to help counteract the greater rotational force and increased stopping distances that you will get from the bigger wheels and tires.

So your car will be slower and will take longer to stop but as long as you keep this in mind, there shouldn't be any real issues.



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Good point. The 235/55R18 are 28.2" 245/45-275/40 are 28.7" shouldn't be an issue for the speedometer I'd think 70MPH would read 71.2

A Guy
 

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I think the 18's on my car were about 27.25" loaded diameter, the 20's are about 28". So only about 2.5% difference or at most 2 mph at 70 mph, probably not enough to worry about.



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