How Thick Does Lake Ice Have To Be To Support A Car's Weight?

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Car title astir nan stiff reservoir during I.C.E (The International Concours Of Elegance) 2026 connected January 31, 2026 successful St Moritz, Switzerland.

Chris Jackson/Getty Images

While it seems for illustration a car lover's imagination to walk an day sliding a high-performance car atop a stiff lake, there's existent threat looming correct beneath your 4 tires. It's important for anyone venturing retired connected reservoir crystal to cognize nan thickness of nan stiff surface. While location isn't a azygous magic number for crystal thickness that supports each car, location are established guidelines to enactment safe. Before we start, if nan crystal is little than 5 inches thick, don't moreover effort to thrust connected it!

The Minnesota Department of Natural Resources has published extent guidelines to thief you enactment safe retired connected a stiff lake. The agency stated that new, clear crystal should beryllium astatine slightest 5 inches heavy to support a snowmobile's weight. The recommended minimum thickness understandably scales up pinch conveyance size. It's a nine-inch minimum for a mini car. That fig goes up to 11 inches for a mid-size SUV and 16 inches for a heavy-duty truck. If you want to tow a shelter retired connected nan lake, you're going to request 20 inches of ice. Double these numbers if nan crystal is white.

Planes are beautiful dense too

A photograph of a Cessna 172 Skyhawk stuck successful nan crystal of Upper Red Lake, Minnesota

Beltrami County Sheriff's Office

It's important to retrieve that crystal doesn't frost uniformly. It freezes from nan shoreline inwards and from nan apical down. You person to beryllium alert that nan expanse of crystal atop a reservoir whitethorn beryllium uneven. The communicative of a 2023 ice-fishing travel gone wrong is simply a decent illustration of why crystal thickness matters. Two group were flying successful a Cessna 172 Skyhawk to Upper Red Lake successful Minnesota. The aviator overshot nan landing strip, slid onto nan reservoir and fell done nan ice. According to Cessna, nan plane's maximum takeoff weight is 2,550 pounds. That's astir 160 pounds heavier than a 2026 Mazda MX-5.

Luckily, nan h2o wasn't excessively deep. The brace were caught waist-deep successful their astonishment crystal bath and were helped retired of nan h2o by different anglers connected nan lake. The section sheriff's agency believed that nan crystal was only 1 aliases 2 inches deep. As agelong arsenic you do your owed diligence, you should person thing to interest astir when driving crossed a stiff lake.

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