Coquihalla Drive: A Vancouver Drivers Vehicle Checklist

BC Highway 1 east from Metro Vancouver passes through conditions found on few other Canadian roads. The Coquihalla Summit reaches over 1,200 metres, Manning Park sits at nearly 1,300 metres, and conditions can shift from clear and dry to ice and snow within the space of a mountain pass. Being prepared for that drive means more than filling the fuel tank.

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Tyre pressure drops in cold temperature — roughly 1 PSI for every 10 degrees Celsius drop. A tyre inflated to the manufacturer's recommended pressure at sea level in Vancouver will be under-inflated at the Coquihalla summit, where temperatures can be 10 to 15 degrees colder. Under-inflated tyres generate more heat at speed, wear faster, and have reduced grip on ice and wet surfaces.

Check tyre pressure the morning of your trip, before the car has been driven — readings taken after driving are higher than cold readings. Inflate to the manufacturer's specification, not to the number printed on the tyre sidewall. If you are travelling in winter conditions, ensure your tyres are rated for the conditions: all-season tyres have temperature ratings that matter on mountain passes.

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The long descent from the Coquihalla Summit — particularly the section between the summit and the底的 tail of the Coquihalla Lakes — is sustained downhill at speed. Using your brakes continuously to control speed on a long grade generates heat, and brakes that are already worn or marginal at sea level become a safety concern at altitude.

Before a long mountain drive, check that your brake pedal feels firm — not spongy, which indicates air in the brake lines or worn brake pads. Have your brakes inspected before a trip if you have noticed any change in braking feel, unusual sounds, or longer stopping distances.

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BC Highway 1 east of Hope frequently passes through construction zones where road spray from heavy trucks coats windscreens at speed. In winter, slush and salt spray from other vehicles covers your windscreen continuously. Washer fluid is not optional on this drive. Carry an extra bottle in the boot, topped up before you head east on the 1.

Wiper blades that streak or chatter on a dry Vancouver street will be worse in heavy rain or slush at 100 km/h. Replace worn wiper blades before a long trip.

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Cell service is intermittent or absent on significant sections of the Coquihalla Highway. A breakdown in these areas requires self-sufficiency. Carry a working flashlight with spare batteries, a portable phone power bank, a warm blanket, food and water for several hours, a reflective warning triangle or flares, and a basic first aid kit.

In winter, add tyre chains rated for your tyre size, an ice scraper, and a snow brush. Even if your vehicle has all-wheel drive, chains provide additional traction on steep icy grades.

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Between Hope and the底的 of the Coquihalla there are limited fuel stations, and in winter or during construction, some may be closed or have limited hours. The section between Merritt and Kelowna on the 97C also has gaps between fuel options. Plan your fuel stops before you leave, and top up whenever you pass a station rather than waiting until the gauge drops below a quarter tank.

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On mountain passes where the road is single lane in each direction, visibility is critical. Check that all headlights and taillights are functioning before you leave. In rain, snow, or fog, use low beams — high beams reflect off fog and snow and reduce forward visibility. Keep your windscreen interior clean.

Book your vehicle in for a pre-trip inspection at JRS Auto Customs before your next Interior trip. A quick inspection covers brakes, tyres, lights, and washer fluid.

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