Hi all- help! I have a completely stock 06 with Kumho 245/45ZR18s on the rear. Is this the stock size rear tire? This car is my toy, but I drive it to work 20 miles round trip as long as it isn't raining or snowing! These tires are too easy to break loose- I was thinking I'll just buy a drag radial and replace them as often as I need to... it seems no one makes this size drag radial. I want a sticky tire that fits on the stock rim with the factory diameter. Tell me what to buy! Thanks!

 

Yes, those are the stock size.
If they're too easy to break loose, they're probably worn.