>>1694849As others have said, use a D-lock through the frame and a wheel to a solid object with as little room as possible to prevent leverage attacks. Use a cable attached to the D-lock for the other wheel. Never use quick release skewers, ever. And remember, portable angle grinders will defeat ANY lock in minutes. Only leave your bike when necessary and always leave it in the house not the garage or shed. 90% of successful bike thefts are from sheds and garages.