This is the stock OEM tire size for the Crossfire front tires. These are the top of the line Michelin tires.

FYI
I just order a pair of these Michelin Pilot Super Sport tires for my "Damsel in Distress" SRT6 coupe project. I made this seller an offer of two tires for $175.00 per tire and he accepted the offer (shipping was $35). That is about $100.00 per tire less than the going price for these tires. If your baby needs new shoes, this is a good buy!

225 40ZR18 Michelin Pilot Super Sport 225 40 18 | eBay