Why Your Tires Lose Pressure in Regina's Cold Snaps

The Science Behind the Warning Light

Many Regina drivers wake up after the first hard frost to find the tire pressure light on. Nothing is necessarily wrong with the tires. Air contracts as it cools, so tire pressure falls as the temperature drops. A common rule of thumb is roughly 1 PSI lost for every 5-6°C of cooling, which adds up quickly during a Prairie cold snap.

1. Check Pressure When the Tires Are Cold

Use a reliable gauge first thing in the morning before driving. Compare the reading with the figure on the sticker in your driver's door jamb, not the number printed on the tire sidewall. Add air as needed, and do not forget the spare.

2. Know the Risks of Low Pressure

• Uneven wear and poor traction: Under-inflated tires have a weaker grip on ice and packed snow.
• Heat build-up: Soft tires flex more, which can lead to damage at highway speed.
• Higher fuel use: Rolling resistance goes up when tires are soft.

3. Winter Tires and Seasonal Habits

Winter tires use a softer rubber compound that stays flexible in extreme cold. Whatever you drive on, check pressure at least once a month and any time the forecast shows a big temperature swing. Inspect the tread and sidewalls for cracks, bulges or embedded debris.

4. If You Get a Flat on the Roadside

1. Slow down gradually and move as far right as is safe.
2. Turn on your hazard lights and stay clear of passing traffic.
3. If the shoulder is narrow, icy or busy, do not attempt the change yourself.
4. Call Diesel and Dust Towing & Auto at (306) 807-2277. Our mobile tire change service swaps your flat for your inflated spare, and if the spare is unusable we can tow you to a tire shop.

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