Is there a way to increase skid mark persistance?

Is there a way to make it so skid marks aren't culled as quickly as more are laid down onto the track?

 

My friend has been looking for years and hasn't found anything yet. I will watch this thread to find out. Thank you for starting it.

 

This is a capture from rFactor1 manual. Probably is affected by special effects option and maybe you can tweak it in the .plr

 

Hey, thanks.
I'll try that out soon and update if it makes a difference.