Hey all taking my car down to the Dyno tomorrow, should I dyno my car with my 17” street tires ( grid 2’s) or my race tires 16” 540s R. Also iv herd using different tire PSI can allow the car to sit better on a dyno, tomorrow were turning the boost up to around 14psi, then the following week up to around 30psi.. so yeah any suggestions would be great


Kindest Regards James