I once bought a bike off eBay which ended up being cracked at the head tube. As I’d gone to inspect it and didn’t spot it and basically I had no recourse as I’d accepted the condition of it and taken it away.
I’m not suggesting you’re selling a knackered bike, but basically if the buyer tests it and accepts it with squeaking brakes and all then it should not be up to you rectify any ensuing issues.
I once bought a bike off eBay which ended up being cracked at the head tube. As I’d gone to inspect it and didn’t spot it and basically I had no recourse as I’d accepted the condition of it and taken it away.
I’m not suggesting you’re selling a knackered bike, but basically if the buyer tests it and accepts it with squeaking brakes and all then it should not be up to you rectify any ensuing issues.