Still new to riding, so still learning the hard way. Above is the offending rear tire on a 07 KLR 650, its a Kenda K761. It came with the sale of the bike as a spare but it looked never used, but it could be older. I've put a good 600-800 miles on it since switching to it. I did not notice this split when I changed the tires. I noticed it when I started to have a slow leak, that I've now narrowed down to the valve stem area. There is no leak in the tube in the split area. (Hence why it is wet from checking for a leak). I don't think the split extends past the depth of the tread. (I THINK!) I will be riding 90% street. I am leaning toward getting a Michelin T63 to replace. Question: Would you ride on this until a new tire came in the mail, or should I immediately park the bike and wait? If that's the case, I'll put the K270 I have on, but don't want to change tires twice in a week. 3,2,1,GO!