Originally Posted by
hokiefyd
George, that sounds like a great buy! The tire's are probably one of Bontarger's older "Invert" style of tires (they may even have a model name of "Invert" on the sides). I have a set of these tires on my 1997 750 and I think they're quite good! They do have a very smooth center tread, which rides silently and smoothly. As for derailleur adjustment, check out some of the videos on Park Tools' YouTube channel. They have a lot of great videos on how to do this.
It doesn't say Bontarger on it, it looks Chinese with a name something like tien - seng. I already looked at the videos you mentioned and it states, which I knew already, that some bikes are designed to rub when you cross the chain if you know what I mean. This is where advice from another owner would be handy to know if this is the case or it's just not adjusted.