Razr tires size what should i get ?

[HiperEX]

Im lookin to buy either razrs or fast trekkers and for the razrs what should i get for a front tire ? 20x6-10 or 21x7-10? and for the rears are going to be 20x11-9? what size should i go for the front?

[GNCC#829]

The taller one will help you turn better so I would get the 21's.