Q: Can I replace my 225/45R18 tires with 215/55R17 tires? The 215's are what ALL tire sites say are original factory size

asked by on

My car (2011 Hyundai Sonata Limited) came with 225/45R18 tires when purchased new. Researching tires on many sites by car type ALL sites show 215/55R17 as the original factory tire size. The plate near the drivers seat shows the 225 size. Not sure why I've got 225 if 215 is original factory size. Cost is not the issue. I was just wondering if since 215 is what the car SHOULD have according to factory specs, can I replace my 225's with 215's. Naturally when I ask the tire folks, they're steering me to the higher priced 225. Just wondering if I insisted on the change to a smaller tire, would I be doing myself a disservice as far as driving, safety, etc. Thank you

My car has 29000 miles.
My car has an automatic transmission.

I owned a 2008 Sonata and currently own a 2015 Sonata Sport 2.0T Limited. With your generation as well as my 2015, the Sonata with the 2.0T engine has larger brakes so the 18 inch wheels make more room for them. Since yours is a 2.4 Limited, it only has the 18 inch wheels for appearance as all 2.4 ltr versions whether Base or Limited, have the same size brakes. I do not recommend a 215mm section width with the 18 inch wheels. The ride and handling will deteriorate badly. If you are sticking with the 18 inch wheels, then stick with the 225/45R18 tires. You can most certainly change down to the 215/55R17 tires AND wheels. Any 17 inch wheels listed for the Base, SE, GLS, etc will fit fine. The ride and handling will be different. It will ride a bit smoother as you are increasing the sidewall aspect ratio - 55 vs 45%. The will also be narrower - 215mm vs 225 mm. It may not grip as well in dry weather but you may notice a little better traction in wet and snowy conditions as there will be more weight concentrated on a narrower tread area. Your speedometer may be slightly off however. The average overall diameter of a 225/45R18 tire is 25.9 inches. So that makes for roughly 802 revolutions per mile. The 215/55R17 will have an average diameter of 26.3 inches and approximately 790 revolutions per mile. A slight difference that may only cause your speedometer to be off by 1-2 mph. On the up side, you may get a slight bump in miles per gallon. The taller tire will reduce engine rpms at highway speeds slightly. So if you are willing to reduce the wheels from 18 inch to 17 inch, then go ahead with the 215/55R17 tires. If you are keeping the 18 inch wheels, then stick with the 225/45R18 tires.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Can I replace my 225/45R18 tires with 215/55R17 tires? The 215's are what ALL tire sites say are original factory size

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I cannot locate the solenoid vent valve in my car.

Hi there. The purge control valve that you are looking for is located next to the valve cover and between the engine and the firewall to the front of the engine area. The valve should have vacuum type hoses attached...

Q: My cars is 2006 hyundai sonata and i want to know that when has to transmission of the filter be changed in these cars?

Hi there. One of the best resources we have available on our website for car owners like yourself is the scheduled maintenance tool. All you have to do is enter your vehicle's information and all of your recommended services and...

Q: Service ESC Service Traction

Hi There, It sounds like you may have a faulty wheel speed sensor or potentially a malfunctioning ABS control module. Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.