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Looking for suggestions: Taller tire for stock rims (2017 SX)

2K views 10 replies 7 participants last post by  2017kiaowner 
#1 ·
I am getting close to that time where I will need to consider new tires. I don't like the lower profile tire that came on the stock 19 inch rims. I would like to fill the wheel well more and enjoy a little more comfort from the taller tires. Anyone here have any recommendations on what I should be looking at?
 
#3 ·
The problem is if you end up with a larger diameter tire, your speedometer's gear will have to be calculated and changed to compensate for the new diameter otherwise you'll be going faster than the speedometer readings. The other thing to consider is how will the bigger diameter affect the electronics as in engine tune and especially transmission shift points? (I'm really not sure if this would be a issue).
Take care

Regards: Jack
 
#5 ·
It's not just speedometer, it's all the other stuff like stability control, autonomous emergency braking etc... that is tied directly to the factory tire size. For all that stuff to work correctly, you need to maintain the exact same overall diameter of the stock tire / wheel package.
To achieve a taller profile in the sidewall, you would need to step down in rim diameter and select a tire to keep that original overall diameter. Also taking into consideration the size wheel required to clear the brake hardware.
 
#6 ·
for the SX you can step down from 19 inch to 17 inch wheel, and use a P225/60R17 tire to get the correct overall diameter. I am not sure of the exact sizes going from 18 to 17
 
#7 ·
i went 1 size taller on mine, no noticable difference in speedometer until you get to around 60mph, then you're still only going 1mph faster, at 80mph only 2 mph faster than stock size.
also turn your steering wheel all the way to the left, check both wheel well clearance. turn it all the way to the right and check both wheel well for clearance.

https://www.kia-forums.com/3g-2011-2016-sportage/285321-new-set-tires-falken-pro-g4.html

use a tire calculator comparison if you're going with smaller wheels and taller tires.
https://tiresize.com/calculator/
 
#9 ·
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