OEM spec tires are usually not the same as a generic retail tire, even if they are the same size and model. If you look, there are different P/N's despite them being the same size and model. And they can have very different characteristics and prices as a result. Glock22357 is correct.
2011 GT 6MT (Cookie Monster) - The 1/4 life crisis. Brembos, 401A, drop top, Grabber Blue.
1974 Dodge Challenger - The money pit. 408 SB stroker, Megasquirt 2 EFI, 904TF, 3.91 gears. 16MPG and 520HP goodness
2004 Hyundai Tiburon - The winter beater.