My commuter is just about the most reliable bike I have ever owned, SS, 1/8th drivetrain, deep V alu rims that can take on any pothole, big chunky hubs with big ball bearings, fully enclosed brake cable runs, it's been pretty much faultless for the last 12000 miles needing only a bottom bracket, chain wear adjustment, and a few sets of brake pads, but because the fact that it never ever stops working my maintenance schedule on it is er, shall we say sub-optimal, I tend to just ride it, throw it in the shed, then repeat for 3 years
Yesterday a freak bungee-cord-hooking-chain incident meant a quick walk back home to fix a snapped chain, while the bike was upside down (taking rack off to get rear wheel out) I noticed one or two 'potential future issues'
1> the rear tyre was basically running on canvas for about 30-40% of the circumference - whoops, tyres normally under mudguard so hadn't noticed, must have been like that for at least the last 400miles!
2> rim walls are literally paper thin, I can flex them with my thumb - whoops
3> the rear hub axle feels like it now has square bearings, no play but not exactly smooth - whoops
4> freewheel and chainring teeth are worn, very very worn, beyond sharks teeth, almost crescents now - whoops
5> chain is so worn and baggy that some of the rollers have actually worn through the bush and basically just flapping around the pin - whoops
Suffice it to say I may need to give it some love soon otherwise I fear it may actually just fall into a pile of bits in the middle of a ride soon
Incidentally, I'm pretty proud of getting 12000 miles out of a rear tyre (no punctures!) and single drivetrain!