Just some of my own thoughts and feedback....
Would say that from my own usage thus far, but in reference to a tactile unit, not Jet seat "wheel slip" can feel rather nice and be of great usage to aiding your driving. Did have to try several attempts with creating different wav files and using frequencies that I then found worked well or at least seemed more suited to the effects operation and role.
Id, like to give credit here as from an immersion perspective if we compare this to other software's "oversteer effect" the "wheel slip" in SSW, is much better feeling and much more valuable as an immersion tool. We also have in SSW "Lateral G" and "Longitudinal G" being active in corners, these all combined are excellent for immersion.
Three Effects In A Corner?
What I see happening from the audio channel monitoring is that when your generating oversteer or understeer and wheels are "slipping" this also activates the "deceleration effect" via the front/back "Longitudinal G" as the car will also be slowing. Having this effect with its own well-matched frequencies to that of "wheel slip" when both are active can give the user plenty of tactile feedback when they are over-driving with the back end sticking out on oversteer or passing the limits of grip on understeer.
In this example below, the driver does not have an indication for front/rear wheel slip but only left/right.
Blue lights on dash illuminated, then your going to be feeling it
You should already know if your understeering or oversteering based on your eyes and steering input. Focus on feeling the slip, react to prevent it, do this and it should improve your speed/lap times. Some sim/games have tyre squeal activate in such circumstance too and people have used the "audio" to help determine when "wheel slip" was happening this again to my knowledge is based on stereo L/R not between front and rear audio channels.
Another Sensation.....
I've even pursued having a new heavier feeling sensation for "lateral G" to emphasise the speed/load going into the corner and produce a different feeling to those others. Having this also active combined with bumps as well (also in stereo) working in is a superb combination.
I cant say how well "Jetseat" can distinguish each effect to have its own or a wider variation in sensation it produces. As perhaps what can be done in tactile can be better represented but from the perspective of SSW coding and effects using the telemetry really well, we have for example sensations here described above that are not felt in other telemetry based tactile offerings.
Curious about Jet seat and would like to try one sometime or to see how files are adapted or made for it to get the most out of its abilities.