would the 255 be a better choice? would it look good? any thoughts...

Check the load rating and speed rating of the tire you want to use vs. the minimum required for the car. If this is ok,, then you should check to see if the size is listed as acceptable oversize. If this is not available then you will have to mount tires and check all aspects of suspension travel to confirm they don't hit any body/suspension parts.

If all checks out then it becomes your choice.

Your total rolling diameter will be off by 1.4%. This will throw off your speedo and may interfere with some of the ESP electronics. When your speedo reads 60MPH, you would be travelling 60.8mph. The delta will increase exponentially with increased speed. Use this for reference:




Here's a great little tire calculator for you to play with.