GENERAL tyres wont do any harm.but dnt drive for more then 250kms widout a stop.give ur self nd ur car s rest for atleast 15-20mins.
n-5 is a really nice road nd i travel on it several times a year going to multan.i enjoy driving on it.
nd yeah,do take pix of the journey,note the milage nd let us know how ur city idsi did all the way(Y)