When I was 18 I had a Yamaha RD350 . I was tooling along on a two lane road going about 70 mph . All of a sudden all hell broke loose ! All I knew is I was skidding my rear tire and I wasn't applying the brake . That bike was a squirrelly nightmare as it scrubbed off speed . It wasn't my skill but just dumb luck I kept the bike upright .
When we finally stopped the smell of burnt rubber was heavy . I put the sidestand down and got off the bike . I looked at the road and the black rubber line was intense . So what happened ? The chain snapped and some how wrapped around the spokes/brake hub/swing arm . Instant lockup . I called my father to come pick me up . As I waited I noticed the rear tire was flat . Yeah it burned down to the cords and all the air leaked out .
When my day showed up he asked me " you OK " ? I said yes . He looked at the rubber streak on the road and said " the speed limit is 40 " . I said yes . He had a smirk on his face as we loaded the bike into our truck . He never said anything else after that . I was lucky in many ways that day