Ribbon used as tire skid marks - ribbon is inconsistent

I have this ribbon tire skid effect.
At certain angles, it has the correct thickness.
But at other angles of skidding, it looks thin, like its folding in on itself.
Is there any way to fix this in the emitter settings?

Here are the ribbon settings

What would I need to change to fix this so the car skid marks and applied consistently with consistent width? Many thanks for any possible suggestions!