The single biggest predictor of a treadmill breakdown isn't the brand or the price you paid — it's whether the belt and deck have ever been lubricated. Most of the emergency repair calls we get in Toronto and the GTA trace back to basic maintenance that got skipped, not a defective machine. Here's the schedule we actually recommend, based on what we see fail and when.
Treadmill decks need silicone lubricant between the belt and the deck surface — friction here is what causes belts to wear out early and motors to work harder than they should. Most home treadmills need this every three months under regular use (3-4 sessions a week); daily or multi-user households should do it monthly.
You'll usually know it's overdue when the belt starts squeaking, feels like it's sticking during the first few minutes of a run, or the motor sounds like it's working harder than usual at the same speed.
A belt that's tracking slightly off-center or losing tension won't always announce itself with a noise — it just wears unevenly until one side fails first. A quick check every six months (or sooner if you notice the belt drifting to one side) catches this before it turns into a full belt replacement.
This is also a good time to check the incline mechanism if your treadmill has one, since incline motors see less use than the main drive motor and problems can go unnoticed for a while.
If you only do one thing, do this one before the season where you'll actually rely on the machine daily. In the GTA that's typically October or November, before outdoor running becomes impractical. A full tune-up covers belt and deck condition, motor brush wear (a common failure point after 2-4 years), console function, and electrical connections.
Households where the treadmill gets shared by two or more people should treat this as a twice-a-year service rather than annual — usage adds up faster than most people expect.
The most common repair calls we get are for problems that started small and got expensive: a dry deck that eventually wears through the belt, a slightly misaligned belt that eventually strains the motor, or a console issue that could have been an easy fix if caught earlier. None of these are unusual failures — they're just maintenance that got deferred until it became a repair.