As of this year we're using 10 inch wheels (Keizer CL10) with single locking nut.
We tried to calculate the needed locking torque that we need. We got approx. 160 Nm in the calculations.
We used 180 Nm for safety factor.
When we drive the car the single nut gets loose after around 20 minutes of driving.
We tried to calculate again and again, still we got the same results.
Is someone familiar with single lock nuts and willing to help us?
If you use single lock nuts what is your locking torque?

Thanks for the help,

Boaz Cohen
Head of power delivery team
BGRacing
Ben Gurion University
Israel