Kumo makes good tires at a reasonable price. I just bought a set for my other car. If you go with larger than OEM you can only fit them on the back. Then you will not be able to rotate them to the front - they will interfere with the struts. The 245 KDWS already rub. In fact, you need to make sure the width of what every 245 you buy is not greater than the OEM 245 or the problem will get worse. Not all 245s are the same width. And ... you may want to think about the issues you will have if you get a flat. The miniture spare the GTO has can only go on the front. If you place it on the rear, you can ruin your limited slip differential if you drive any significant amount (having the same tire radius is critical on the rear). So a flat in the back means put the spare on the front, then replace the front tire with the flat rear. There is also the issue of fitting a flat back into the trunk. Some have done it - others carry some rope in the back just to tie the trunk down if they can't close the lid. I've also heard some guys have made their wifes sit in the back with the flat in the front passenger seat. Just some things to think about.