There is a whole spectrum of "light". Trying to put this in some kind of reasonable order....
- Not for hucking bigger than 10 feet.
- Not for urban & trials.
- Not for rock gardens at speed.
- Not for clydes offroad.
- Not for curb jumping.
- Not for big mashers who tend to notice wheel flex.
- Not for anything other than race day.
- Not for anyone without full insurance coverage.