Front tire was locked to bike rack. Front tire unscrewed from frame and bike was taken with front tire still locked to frame and two bolts/screws left on the ground. Therefore, the bike would be missing a front tire, or the front wheel and tire may not match the back (back tire should be a Continental tire).
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Apply the protection label to your bicycle and instantly reduce the risk of theft by up to 50%! Moreover, if the bike is stolen, you increase the chance of its safe recovery by up to 70%.