2. If I experience a slipping clutch due to this failure, how long to I have before I’m stuck beside the road (in miles) looking for a place to buy a drill & Coca-Cola!
Unless there’s a tame Beemer shop nearby to tear it apart for me & I’ll find a motel with swimming pool meanwhile!
Think of it as how many clutch pulls, rather than miles. If you're in cities or backroads where you're shifting gears a lot, then you're not going to get very far. But if you're on an interstate highway, and droning along in top gear, gas tank to gas tank stops, you'll ride all day long.
In my case, I was ferrying the bike to Dallas, Texas from Baltimore, Maryland. It was new to me as I had just bought it used. I was unfamiliar with the bike's clutch (they're all a bit different as you probably know). Before I realized that the clutch was slipping, I was already up on the Blue Ridge Parkway, flogging the heck out of the bike, and then detouring through Roanoke, Virginia city streets due a parkway closure. Once I realized what was happening, I got on the Interstate hoping to make a beeline for home. I made it all the way to Ruston, Louisiana, before having to park it for good and get assistance.
Assuming that the slave cylinder was already leaking a bit when I took delivery of the bike, that's about 1550 miles of a mix of twisty mountain roads and Interstate highways before failure, the last 1100 miles of which were solely on the Interstates. I think that If I had just rode the Interstates instead of going up into the mountains to play, I could have made it all the way home and barely even noticed the problem. It was the mountain roads of Virginia that really did me in.