Biggest tire size on stock SX wheels - Kia Forte Forum : Sedan / Koup / Forte5 Forums

Corsa2.4 · 09-21-2011, 02:39 PM

What is the biggest tire size that we can fit on the 2010 SX wheels that do not rub the wheel well?

DevilsX · 09-21-2011, 02:40 PM

225/45/17 would be the biggest I'd recommend. 235 is maybe pushing it.

Corsa2.4 · 09-21-2011, 02:49 PM

Quote:

Originally Posted by DevilsX

225/45/17 would be the biggest I'd recommend. 235 is maybe pushing it.

The stock tires are 215/45/r17 right?

noodile · 09-21-2011, 03:07 PM

i wonder if you can run 245 on the koup. Not stock rim, on a different rim. technically its only 30mm bigger that stock. which is only like 1.2 inches.

Corsa2.4 · 09-21-2011, 03:25 PM

So, 225/45 definitely and 235/45 probably not?

DevilsX · 09-21-2011, 03:42 PM

Basically your overall wheel + tire need to have a diameter of 25". If you exceed that, it will rub/touch your wheel well. Based on other members' experience, 225 would be okay, as 215 being stock. Use this site to check:

Tire size calculator

Corsa2.4 · 09-21-2011, 10:26 PM

Quote:

Originally Posted by noodile

i wonder if you can run 245 on the koup. Not stock rim, on a different rim. technically its only 30mm bigger that stock. which is only like 1.2 inches.

Quote:

Originally Posted by DevilsX

Basically your overall wheel + tire need to have a diameter of 25". If you exceed that, it will rub/touch your wheel well. Based on other members' experience, 225 would be okay, as 215 being stock. Use this site to check:

Tire size calculator

So, 235/45-17 would rub because it's 25.3 inch diameter? 225/45-17 tires have a 25 inch diameter therefore being the biggest tire size we can use?

DevilsX · 09-22-2011, 01:39 AM

Well. 0.3" isn't THAT big, remember your wheel gap is maybe 1-2 inches depending on load the vehicle is carrying. Also the front wheels need to be able to clear the fenders when turning. You want to take all this into consideration. I would not go more than 1" bigger than normal size, especially since it'll mess up your speedometer reading too.

Corsa2.4 · 09-22-2011, 07:29 AM

Thanks, when I get tires soon I think I'm going to try 235/45-17.

trevorusn · 09-22-2011, 08:42 AM

I heard 225 would alter the sidewall ratio to a slightly higher number. I'm confused. So 225/45/17 will fit with no adverse effects????

Corsa2.4 · 09-22-2011, 12:16 PM

I'd like to buy some tires ASAP as mine are getting very low tread and tire kingdom is having a buy 2 get two free thing that I'm going to check out.

tim w · 01-31-2012, 11:05 AM

if run a 235/40/17. the overall diameter of the set up would be 24.4 as to the stock set 215/45/17 which is 24.62. that way you get a wider tire on a lowered car so the wheel well gap won't look huge. the only question is will a 235 push the tire-rim pressure to far. that if you hit a bump or pothole to hard the tire will blow out. also the speedo reading would change from if going 65 on a 215/45/17. it would read 64.43 with the 235/40/17.