Since a lot of us (even me) usually hit curbs and debris that’s left on the road, the tires of today are made to resist “accidental” damage by having thicker rubber that’s molded at key locations on their 
sidewalls. This is what really helps reduce damage to the tires and even the wheels.
This is where OE Hubcaps come in: tires that mount on steel wheels don’t have this kind of protection. Since there’s no rim protector on the tires that are mounted on the steel wheels, this usually allows more flexibility in hubcap styling and how hubcaps are designed attach to the wheel. This is why your Kia Spectra Hubcaps look so nice on your wheels.
Watch out for those curbs!
Mykalanne.