I just bought my gxp about 2 weeks ago and today I noticed a problem. It has the wrong size tires on the front, it has 225/45-18 instead of the 255's. If I have it figured right that's a full inch dia difference. I plan on calling the dealership but I'm leaving for vacation in the morning, about 450 miles from central PA to North Carolina (OBX).

Is this going to be ok or should I be worried?

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