Gtech ebike is well made but it is fitted with Gates rubber belt instead of a chain. It squeaks. It squeaks like hell and no amount of adjustment or silicone lubricant will solve the problem. People look round when I'm coming. Some laugh at this squeaky bike. I hate it for this reason, but I have to use it because I paid £1000+ for the wretched thing, so I can't put it away and forget about it. I don't enjoy it and feel like I've been ripped off.