This is a non sequitur, as warranties don't cover maintenance, and maintenance doesn't necessarily prevent breakdowns. BMW's warranty is 36,000 miles, or roughly 18 months. I plan on keeping my bike much longer than that. Additionally, Murphy's Law's pretty clear about catastrophic failure only occurring when you're far, far away from your toolbox. It doesn't take much research to see what the GS's repair history looks like. If you ride serious miles and tend to go outside of your local area, you're tempting fate by not having a warranty. It will literally take one covered issue for the policy (5 years, unlimited miles) to pay for itself.