tighten your trucks alot or unscrew the truck and take off the bushing and snap it or something.
yes the sizes of skateboard wheels range from 40-70 mm
Yes, they are called Avic
The average i belive is 31' or 32'
a
It doesn't matter that much, it really depends on what you are more comfortable with. So just try different sizes of skate decks at your nearest skate shop of they let you ;)
Any don't matter
Its a matter of opinion and preference
Doesn't matter
Bushing are usually the little white things iside of your trucks.... its your bushing that are being tightened when you tighten your trucks
Yes, if the skateboard can carry them... :-D
if you like that size. i would suggest going to an 8.5, then work your way down to a size between 7.25-8.50. It really doesn't matter but most skateboard companies don't make skateboards in the extreme sizes. And the cooler designs are in the 7 inch sizes.