Thank you all for the excellent advice.
SoCal, I'm averaging 70% paved trail and 30% off-road (loose dirt, sand and hardpack).
I stopped by a local cycling shop today to check out the tires and they directed me towards a pair of
IRC Mythos XC Slicks. Do you think they'll do the trick? Also, they did say something that struck me as being a bit odd - they said that I could go with the 26 x 1.95 tires even though the tires size that is currently installed is a 26 x 2.1. Are they correct?
Thanks.