exactly what TIRES are you looking for....you can NOT make out what brand of TIRE those are.....
the WHEELS on the other hand appear to be the racing hearts that are coming on the new MSP.
OOPS....yep...hes right...those are the original ones from the MP3.....excuse me.....I am working 14 hour nightshifts for the last 2 1/2 months....my mind is about like mush at the moment....
Actually those are the MP3 Racing Harts. They can be purchased at www.mazdaformance.com for $280USD a wheel without tires. I seen where they were $250 a wheel on the website you linked from but then they sell the center cap for another $30, so it evens out.
The MP3's came with Dunlop SP9000's if you were wondering. They sell for around $190USD a tire.