this z4 v10 is my car..
event is called Moscow Unlim 500+ and its Russian 1 standing mile event.
my car had problems with air delievery on high speeds, and also traction was not too good, car was running in the mdm mode.
m3 is vt625(ess also modded the kit for this car), about 680hp + racing fuel.
About 13.xx times - its because of bad traction, drivers are pretty good