Protect chipping frame from metal bike lock with Sugru What's the best method to stop a Kryptonite Mini d-lock scratching/chipping an aluminium frame? Stickers have already been applied as a first layer of protection.


Is there something similar to the LifeLine Rubber Frame Protector that could wrap around the metal parts of the lock to prevent metal—metal contact? Or is this wide enough to work by itself?





My second thought was to use Sugru?  In this case, what is the optimal pattern to apply this to the d-lock? I thought several rings around the circumference of the lock at perhaps 1 cm intervalz? Or would a spiral be better? Or just a line on the inner circumference?
Any protection must be applied to the bike, as dirt between the lock and bike will abrade both, but the bike is more fragile and valuable.

The only way to avoid dirt is to not use the bike. Stickers are good but have to be replaced fairly often. Cable ties and clear repair tape are also useful. I've used reflective tape on the seat stay of one bike where the D lock abrades the paint.

An old fashioned solution that works very well is to use an old inner tube on the bike, strapped or knotted in place