I already have Continental Town and Country 26 x 1.90 tires on it now, just bought them a few weeks back. It's definitely a 93 Hardrock, the bikepedia specs are:
http://www.bikepedia.com/QuickBike/B...e#.UC8a8d1lSOs
I saved the old knobby tires that came on it, but I'm using it for urban commuting and there are lots of potholes, broken pavement, storm drains and various other obstacles. Would the wider rims be less susceptible to warping, etc?