tire size HELP!

[Tythescooterguy]

whats the biggest tire size you can put on a spree. i want slicks for it but want to get wider size so it can make it handle a tad bit better. so anyhelp would be nice

[bakaracer]

are you planing on racing that bike? if not your wasting your money on $80 tires. the smallest size slicks is 90/90-10 which won't fit. 3.00x10 will fit but will rub the airbox. 2.75x10 is better fit if you dont want to mod the airbox.