Anchor Chain

My view is that the best thing to do is to increase the security of the garage itself, try to keep the scroats out of the garage. once they are in they can work away at what ever is used to secure the bike.

It sounds as if you already have an above average level of security on your bike whilst in the garage

 

My insurance company would only accept me if I had a ground anchor and chain, and I had to send them photo's to prove it.
https://www.amazon.co.uk/gp/product/B004DNZ6D6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

I spot a problem with your security that will be your downfall?


Nemesis funny name for a padlock

 

Anchor chain and security chains have different physical properties.

Security chains will be hardened and also are likely to be made of a different steel alloy to resist attack, and therefore for similar thicknesses you won't get the same level of security from an anchor chain.

(I recommend Pragmasis, by the way!)

 

I use an oxford security chain in my garage. For me it is about slowing down any potential scroats that want my bikes and any chain will do that. Like most security on a bike, if they want it they will likely be able to take it. It will just take them a little longer with additional secuity in place. It might just make them think again and move along to a bike without the increased security.

 

I was playing semantics

With a grinder on or off the floor makes little difference. However, if you watch how some people use bolt cutters then yes you are correct as it makes it a lot more difficult

 

I have had locks, chains, alarms with pagers, even had a fire alarm bell in the garage...

Get GOOD insurance coverage and don't sweat it.