Hi there, I've got a '99 Mk1, you've got yourself a Mk2 so things may be a tiny bit different, but I believe these points are the same.
The B6 usualy has 6 gears, however depending on what country it was first bought in, it could have 5 gears.
I use the 5 for 6 rule to tell i'm in 6th gear. This translates to 5k revs = 60mph.
A rather daft question, but are you kicking down first to put it into 1st then up (through neutral) to get to 2nd? My B6 doesn't appreciate taking off in 2nd, and like you say, doesn't feel all that grunty before about 5k where the power develops (from a standing start in 2nd) However in first it has power all the way upto the 13k rev line.
The Bandits (even the 6) do like to sit in top gear (5/6) and just pootle around. Usually 6th on mine will pull from about 40 up. Rather slowly I'll admit, but the revs are nice and low for going through town/giving the engine a rest after a motorway stint.
The tyre noise doesn't sound right. They are loud engines and do rattle, but I don't remember hearing a tyre noise coming off it. Although saying that I have an aftermarket exhaust fitted so it drowns out most engine & wind noise below 60. :)
Hope this helps somewhat,
Bullet5.