Has it already been a year since we talked about tracking costs?
In the meantime, I put enough on-track hours on my
momentum car, so that a cost comparison with the 2er makes some sense (no point taking an average over just a couple of sets of tires, for example).
As before, this is only tracking OpEx (tires, brakes, fluids, etc), not the cost of the parts to make the car track-ready. IMHO, this is the metric that makes more sense,
as long as you go to the track often -- then the CapEx (coilovers, fancy calipers, etc) gets amortized. I also don't track fuel costs very accurately, so they're not included here.
Anyway, here's the numbers:
Most important row to pay attention to is the bottom one.
Nothing particularly surprising in the breakdown: bigger, heavier and more powerful car is quite more expensive to run. Especially harder on tires and brakes.
To put these numbers in a bit of context here's a few basic stats about the cars.
--------| M240 | MR2- |
Weight: | 3575 | 2612 |
Whp:--- | 335- | 168- | (never dynoed the 2er)
Lap:--- | 2:01 | 2:09 | (Thunderhill 3mi, same driver)
Tires:- | 71r- | RS4- | (most typical tire on each)