I used to use BT-020's. I would get about 12-14,000 km's on them (7,500 - 8,500 miles). Hard to get them now so my last tire was a BT-021. Only got 6700 km's on it. Not a good tire. Here's a picture.
No problem getting BT-020's here. Just replaced rear this week and have a front on order. Here's a couple of pics of the front at 15,140 km. No cupping and even wear to the indicators all around (BRP last fall helped put wear on sides
). Most of my riding is fully loaded solo touring. Did not get as even wear, or mileage, from 2 sets of BT-021's. Considering price, performance and mileage I'm staying with BT-020's for now.
Edit: July 11, 09. There does appear to be a problem with availability with the front. Dealer could not get one for me and I ended up putting on an Avon Storm front yesterday. Happy with it after the first 450 km.