I was reading the article in Mens Journal about Eric Bana, and his track time with his Porsche.
he states that it's $2400 for tires, 10 thou wear and tear, and 20-30 thou for the rweekend racing.
Now those are probably Australian Dollars, not Euro Dollars, or US dollars... but that is ex - pen - sive
online version http://www.mensjournal.com/eric-bana-at-155-mph
Eric Bana is recognizeable for the role in the new Star Trek movie as the bad guy, but you really will enjoy his documentary on his fix up of his Ford XB Falcon Coupe (same as Mad Max's car) "Love the Beast" http://justacarguy.blogspot.com/2009/02/eric-bana-love-beast-actor-eric-bana.html which is available on instant download on Netflix http://movies.netflix.com/WiMovie/Love_the_Beast/70117051?trkid=2692263#height2225