edges
corners
centre
none of these
avoid ply separation
equalizer wear
get better ride
longer life
lower rolling resistance
smoother ride at low speeds
section width to section height
section height to section width
wheel diameter to section height
wheel diameter to section width
slow air leakage
better fuel efficiency
less chances of running flat
all of these
The advantage of a tubeless tyre over tube type tyre is * slow air leakage * better fuel efficiency * less chances of running flat