Salt does most of its damage where you can't see it. Dissolved brine gets slung up into the wheel wells and onto the frame rails with every mile driven on a treated road, then pools in the low points of the underbody. In a milder climate, a day or two of rain would rinse most of it away. In Macomb County, the same slush and salt often stays in contact with metal for weeks, because the freeze-thaw cycle keeps refreezing it in place rather than washing it off.

Modern underbody coatings resist this better than they did a generation ago, but coating doesn't cover every surface equally. Brake lines, exhaust hardware, and suspension fasteners are more exposed than flat sheet metal, and they corrode faster once salt reaches bare metal or a worn fastener thread. The practical fix isn't a product — it's a rinse routine that actually reaches those areas.

• Rinse after salt events, not on a fixed schedule A single heavy application does most of its damage in the days right after it's laid down. Rinsing the undercarriage soon after a significant salting or plow event matters more than rinsing on a set weekly interval.
• Use a wash with an undercarriage attachment A standard drive-through wash cleans the body but rarely reaches the frame rails and wheel wells. A self-serve bay with an underbody wand, or a service visit that includes an underbody rinse, reaches what a top-down wash misses.
• Don't let packed slush sit in the wheel wells Salt-laden snow that packs into a wheel liner holds moisture against metal far longer than an open, well-drained wheel well does. Knocking it loose after a storm is worth the two minutes.
• Have the underbody inspected each spring A spring inspection catches early surface corrosion on brake lines and fasteners while it's still cosmetic — before it becomes a repair.

Water works its way into small cracks in the asphalt, freezes, and expands, widening the crack. Michigan's repeated freeze-thaw swings through January and February do this over and over on the same stretches of road, which is why M-59 and the secondary roads around Washington Township and Sterling Heights accumulate potholes faster than crews can patch them, especially by late winter.

Wheel size changes how much of that impact a vehicle absorbs. Many Range Rover, Defender, and Discovery configurations run large-diameter wheels — handsome on a showroom floor, but with proportionally less tire sidewall to cushion a hard edge. A pothole strike that a smaller wheel shrugs off can bend a rim or damage a sidewall on a larger one, and the repair is rarely cheap.

A battery's ability to deliver cranking current drops as the temperature drops, while a cold engine's thickened oil demands more current to turn over in the first place. Those two effects compound, which is why battery failures cluster around the season's first sustained cold snap rather than spreading evenly across the winter — a battery that starts the car without hesitation in October can fail outright once overnight lows settle into the teens or lower.

A Land Rover's cabin electronics add to the load at the exact moment the battery has the least to give: heated seats, a heated windscreen, and climate control all draw current on startup, on top of what the starter motor already needs. None of that is a flaw specific to the vehicle — it's the same physics every battery in the region faces — but it does mean a battery that's already a few years old has less margin for a Macomb County winter than it would in a milder climate.

Local Note Have the battery load-tested before the first sustained cold snap rather than waiting to find out on a sub-zero morning in Clinton Township or Sterling Heights. If it's more than three years old heading into winter, testing it is faster and cheaper than a tow. You can schedule a battery check the same way you'd schedule any other service visit.

Two protections are already built into every new Land Rover sold at Lakeside, and they're the ones most relevant to a Macomb County winter: a four-year, 50,000-mile New Vehicle Limited Warranty, and a six-year, unlimited-mileage corrosion perforation warranty that specifically covers rust-through of body panels. Both terms come directly from Land Rover's New Vehicle Limited Warranty documentation. Routine winter washing is maintenance we recommend for cosmetic and longevity reasons, not a condition attached to that coverage — salt exposure on its own does not void the corrosion perforation warranty within its six-year window.