The size of tires for a 2015 Kia Optima depends on the type of wheels that the car is equipped with. Most Kia Optimas come with 16-inch wheels as standard, which require tires with a size of 205/65R16. This size of tire is also suitable for 17-inch and 18-inch wheels, which are available as factory upgrades for the 2015 Kia Optima.
If you have the 17-inch wheels on your 2015 Kia Optima, you will need tires that are slightly larger than the standard 16-inch tires. The recommended tire size for 17-inch wheels on a 2015 Kia Optima is 215/55R17. This size of tire provides a wider contact patch with the road, which can improve handling, cornering, and braking performance.
For those who have opted for the largest wheels available for the 2015 Kia Optima, the 18-inch wheels, tire size requirements change once again. Tires that fit 18-inch wheels need to have a size of 235/45R18. This tire size provides a sportier look and feel to the car, with a wider tread and lower sidewall profile than the 16-inch and 17-inch tire sizes.
When choosing tires for your 2015 Kia Optima, it is important to consider your driving habits and the conditions you are likely to encounter. If you mostly drive on highways or city streets, the standard 16-inch wheels and tires may be perfectly adequate for your needs. However, if you like to push your car to its limits on twisty roads or in wet weather conditions, upgrading to a larger wheel and tire size can improve your driving experience. Always consult with a professional tire dealer or installer to ensure that you choose the proper size and type of tire for your 2015 Kia Optima.