Hey guys, I'm buying a new set of EBC redstuff ceramic brake pads from a guy on ebay with free shipping for $80. The guy needs to know what size rotors I have on my car. He said I should have either 11.9in or 12.8in. I've been the 2nd owner of the car since 2008 & I'm pretty sure there wasn't any kind of brake upgrade done before I bought it. Is there any way to figure out this info with out removing the wheel?