18 way aren't 'restrictive'. 

If you don't close up the side bolsters, they are just as 'wide' as the 14. 

When you go to the track, just bring in the side bolsters to hold you tight, and when you leave, you can open them up for a more relaxing drive home.

Personally, I find the 14 too roomy, lots of empty space for me to slide around the chair even when I am driving in the city. Sort of like sitting in the first class seat on airplanes. I always needed the 18 way and bring the sides all the way in for a normal comfortable seating position even for street driving.

 


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