There are kits that allow you to mount wide tires, but you must place a spacer, not to trip over the engine or the shock. sorry for my english.
http://www.sip-scootershop.com/es/products/llanta+sip+especial+para_81043000 .without modifications. to 100
http://www.sip-scootershop.com/es/products/llanta+neumatico+ancho+kt+de_81050500
http://www.sip-scootershop.com/es/products/neumaticos+anchos+kit+de_820121j0
this kit its for mounting wide wheel 130,