Winter damage is cumulative and almost entirely invisible from the driver's seat. Nothing fails on the first cold night — it fails in June, after five months of salt brine, frost heaves and potholes have quietly worked on parts nobody looks at.
A spring inspection is the cheapest maintenance appointment on the calendar precisely because it turns three future repairs into one present conversation.
Corrosion is the headline problem
Ontario road salt is effective and merciless. The brine spray it creates works into seams, brackets and any place a stone chip has broken the paint, and it keeps working every time the temperature crosses zero.
On the lift, the parts we look hardest at are steel brake lines and fuel lines above the rear axle, subframe mounting points, exhaust hangers, and the rocker seams where water sits. A corroded brake line is the single most dangerous winter legacy on an older vehicle, because it gives no warning at all until the pedal goes to the floor.
Suspension and steering take the pothole hits
Peterborough's freeze-thaw cycle rebuilds the road surface every March. The impacts that come with it load struts, control-arm bushings, tie rod ends and wheel bearings far beyond normal service.
- A clunk over bumps that was not there in November
- Steering that wanders or needs constant small corrections
- A vibration through the wheel that changes with speed
- Uneven tire wear that appeared in a single season
Alignment, almost always
One hard pothole is enough to move toe out of specification. The vehicle may still drive straight enough that you adapt to it without noticing, while the tires wear at an angle that will cost you a set.
An alignment check in spring is inexpensive, and it is the difference between getting five seasons out of a set of tires and getting three.
The rest of the spring list
Beyond the big three, winter leaves fingerprints everywhere: wiper blades torn by ice, cabin filters loaded with salt dust, a battery that has spent months at partial charge, coolant that has been cycling between −25 °C and operating temperature, and an underbody worth washing thoroughly before the salt sits through a humid summer.