| My costs at MSR (and I drive there 2-4 days a month) are roughly: Tires (Toyo Proxes RA-1s)- $580 shaved for 4- they actually have lasted me 25+ hours of track time if heat cycled and rotated Pads- Wilwoods up front $70, Hawk blue rears $80 (lasts 3-4 months) Rotors- I am still on my first set of Wilwoods, and I have replaced the rears (slotted Brembos) once in 8 months. Fluids- oil $35/month, Race fuel $70/weekend, Brake fluid $30/month Alignment- $100 every 3 months I also change plugs once a month, and primarily drive at MSR, which is $60/month and $20/session. Thus, costs are highly variable, and these do not include any upgrades or replacement parts.  My Z is much more economical than running my Viper (for example), primarily because of the increased tire, oil, and fuel costs with the Viper...
 
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