My car works perfectly with multiples of 5, so I prefer that. But you guys wanna hear something really fucking sick? I played a game where the volume would increase with DECIMAL POINTS. And it was borderline impossible to get to a whole number. It was always 8.17 or something. The devs were clearly some kind sociopath. Anyway, I noticed in the last update they changed it to whole numbers, so apparently enough people explained that that sort of thing is just insanity.
Hah. I have to have my volume set to multiples of 8 because I got so used to doing bit conversions and using systems where I octets are used. Even DooM and the old DooM editors used multiples of 8 for things like floor heights and texture sizes.
Regardless of if 30, 50 or 100 is max. 13, 14, 16, 18 can be used if absolutely necessary, may get the volume right, but will have to live with the 'dial' is unbalanced.
A few odd numbers are good volume numbers, and plenty of even numbers are bad volume numbers. Volume must be set to one of the following:
0, 2, 4, 8, 12, 16, 18, 21, 24, 27, 32, maybe 34, 36, 42, 48, 49, 54, 64, 72, 81, ...