ok...depending on how agressive you plan on riding you could put on some street tires and be set. however, if you plan on riding aggressively you'd soon find the front brake is lacking and the wheel sizes are not correct. how agrressive will you be riding? at a minimum i recommend SM wheels:
http://www.crfsonly.com/catalog/index.php/cPath/193_233
if you install these wheels you will need a better front braking system. Some say they get by on the streets with commuter type riding with the EBC SM kit:
http://www.crfsonly.com/catalog/product ... ts_id/4769
anything more aggressive and you'll need more power, feel and control. we are putting together a Beringer kit now so let me know your needs.
ken