What is the correct lug nut tightening pattern?

Use a star pattern. If your wheel has 4 lug nuts at 12, 3, 6, and 9 o'clock, tighten in order: 12, 6, 3, 9. This ensures the wheel seats evenly against the hub.

Can I change a tire in wet conditions or rain?

Yes, but it is more difficult and more dangerous. Wet surfaces are slippery, which makes jacking less stable. If it is raining heavily, consider waiting it out or calling for professional help.

How to Change a Tire: Complete Step by Step Guide for Canadian Drivers

Last updated: 2026 | Trusted resource for Canadian drivers | Posted by Ontario Towing

How to change a tire is something every driver should know, but most people have never actually done it. A flat tire is one of the most common roadside emergencies in Canada, and it happens more often than you think. Potholes after winter, construction debris on the 417, and nails in parking lots account for thousands of flats across Ottawa every year. In many cases you can change the tire yourself using your spare, but the process is more involved than most people realize. Tire pressure, lug nut torque, proper jacking technique, and the condition of your spare all matter.

This guide walks you through the complete process, the common mistakes that cause damage, and when calling a professional is the smarter choice.

Quick Answer: Loosen the lug nuts while the tire is still on the ground. Jack up the car at the correct jacking point. Remove the lug nuts and flat tire. Install the spare tire. Tighten the lug nuts by hand in a star pattern. Lower the car. Tighten the lug nuts with full force. Check the spare tire pressure at the nearest gas station and drive to a tire shop. Spare tires are temporary and should not be driven on at highway speeds or for long distances.

If you have a flat tire right now and cannot change it yourself, call Ontario Towing: (613) 619-4545. We provide 24/7 mobile tire service across Ottawa, including spare installation, tire repair, and tire delivery.

Flat Tire? Call (613) 619-4545

Tools You Will Need

Essential Tire Change Equipment

Spare tire Usually in the trunk or under the vehicle. Check that it is properly inflated before you actually need it. Many spare tires sit for years and go flat without the driver knowing.

Jack (usually included with your vehicle) Lifts the car off the ground. Most cars include a scissor jack stored under the trunk floor or behind a panel. Locate it now so you are not searching for it on the side of the road.

Lug wrench (usually included with your vehicle) Removes the lug nuts that hold the wheel on. Most cars include a cross shaped wrench. Make sure you have it and that it fits your lug nuts before you need it.

Wheel wedges or blocks Prevents the car from rolling while jacked up. You can use rocks, wood blocks, or buy plastic wedges. This is a safety item, not optional.

Flashlight or headlamp Essential if you are changing a tire at night. You need to see the lug nuts, the jacking point, and the road around you. A headlamp keeps your hands free.

Tire pressure gauge Check your spare tire's pressure after installing it. Spare tires are often underinflated. Driving on an underinflated spare is dangerous.

Work gloves Tires are dirty. Gloves keep your hands clean and provide grip, especially in wet or cold conditions during an Ottawa winter.

How to Change a Tire: Step by Step

Find a safe, level location Move away from traffic. Pull well onto the shoulder or into a parking lot. Avoid hills, soft ground, or gravel where the jack could sink or slip. If you are on a busy highway, drive slowly on the flat to the nearest safe spot. A damaged rim is cheaper than getting hit by traffic.

Turn on hazard lights and engage the parking brake Alert other drivers to your presence. Set the parking brake firmly. If you have wheel wedges, place them behind the wheels on the opposite side of the vehicle from the flat tire.

Loosen the lug nuts BEFORE jacking up the car This is the step most people get wrong. Loosen each lug nut about half a turn while the tire is still on the ground. The weight of the car keeps the tire from spinning so you can apply leverage. If you jack the car up first, the tire spins freely and you cannot loosen anything.

Position the jack and lift the car Find the jacking point near the flat tire. Most modern cars have a reinforced notch on the frame behind the front wheels or in front of the rear wheels. Check your owner's manual if you are unsure. Place the jack on that point and raise the car until the flat tire is a few inches off the ground. Do not go higher than necessary.

Remove the lug nuts completely and store them Finish unscrewing the lug nuts you already loosened. Put them in your pocket or a cup where you will not lose them. One missing lug nut means the wheel is not secure. People lose lug nuts on the roadside constantly.

Remove the flat tire Grab the tire at the 3 o'clock and 9 o'clock positions and pull it straight toward you. It may be stuck. Wiggle it gently while pulling. Once it is free, set it aside flat on the ground away from the road.

Install the spare tire Align the holes on the spare with the wheel studs and push it onto the hub. It should seat flush. If it does not fit easily, the rim may be damaged or the studs may be bent. Do not force it. Call for professional help.

Hand tighten the lug nuts in a star pattern Thread all lug nuts on by hand first to avoid cross threading. Then use the wrench to snug them. Tighten in a star pattern: if lug nuts are at 12, 3, 6, and 9 o'clock, go 12, 6, 3, 9. This ensures even pressure across the wheel.

Lower the car to the ground Use the jack to slowly lower the vehicle until the spare tire is touching the ground and the car's full weight is resting on it. Remove the jack completely.

Tighten the lug nuts with full force Now that the car is on the ground, tighten every lug nut firmly in the star pattern again. Use your body weight on the wrench. They need to be tight enough to stay secure at driving speeds. Most vehicles require 80 to 100 ft-lbs of torque.

Check the spare tire pressure Drive to the nearest gas station and check the spare's pressure. Most spare tires need 60 to 80 PSI, which is higher than regular tires. Underinflated spares are common and dangerous. Many have been sitting in the trunk for years losing air slowly.

Drive to a tire shop at reduced speed Spare tires are temporary. Drive under 80 km/h and head to a tire shop to have the flat repaired or replaced. Do not drive long distances on a spare. They are not designed for highway speeds or extended use.

Common Mistakes When Changing a Tire

We see the aftermath of these mistakes regularly. A simple tire change turns into a $500 repair because of one wrong step.

Mistakes That Cause Damage or Injury

Not loosening lug nuts before jacking the car The tire spins freely once it is off the ground and you cannot apply enough force to break the lug nuts loose. This is the number one reason people give up and call for help mid-change.

Not using wheel wedges or blocks The car can roll off the jack while you are underneath it or working near the wheel. This is not a minor inconvenience. It can cause serious injury or death. Always block the opposite wheels.

Over-tightening lug nuts Strips the threads on the wheel studs. When studs strip, the wheel becomes unsafe and the repair is expensive. Professional shops use torque wrenches calibrated to your vehicle's specifications. You probably do not have one.

Under-tightening lug nuts The wheel loosens while driving. This can cause loss of control at speed. If you are not confident the lug nuts are tight enough, drive to the nearest shop and have them torqued properly.

Not checking spare tire pressure A spare tire that has been sitting in the trunk for three years is almost certainly low on air. Driving on an underinflated spare causes additional tire damage and is unsafe, especially at higher speeds.

Losing lug nuts on the roadside You change the tire, drive away, and realize one lug nut was lost in the grass. The wheel becomes progressively looser over every kilometre. Count your lug nuts before you leave the spot.

Forcing a spare that does not seat properly If the spare does not slide easily onto the studs, stop. The rim may be bent, the studs may be damaged, or something else is wrong. Forcing it causes more damage. Call for help.

Changing a tire in a dangerous location Vehicles pass at highway speeds while you are crouched next to your car focused on lug nuts. Move to a safe location even if it means driving slowly on the flat for a few hundred metres. A damaged rim is cheaper than a trip to the hospital.

When NOT to Change Your Tire

Call a Professional Instead

We see customers attempt tire changes and damage rims, break wheel studs, or strip lug nuts. A 30 minute job becomes a $500+ repair. Professional tire service often costs less than the damage from a DIY attempt gone wrong.

Lug nuts are seized and will not budge Forcing them breaks the studs. Professional equipment can remove seized nuts without damage.

The rim is bent or damaged A spare installed on a bent rim may not seal properly and will fail while driving. You need a professional assessment.

Wheel studs are broken You cannot safely install a wheel without all studs intact. This requires a shop repair.

Your spare tire is flat or damaged Spares fail too. Check yours now. Many drivers discover their spare is flat only when they need it.

You are on a busy highway with heavy traffic Changing a tire on the 417 shoulder with transport trucks passing at 120 km/h is extremely dangerous. Call for roadside assistance.

It is dark and you do not have a light source Nighttime tire changes without a flashlight lead to mistakes, cross threaded lug nuts, and safety risks.

You are unsure about any part of the process There is no shame in calling for help. A professional tire change costs a fraction of what it costs to replace a stripped stud or damaged rim.

The jack is broken or will not lift the car Do not improvise with stacks of rocks or wood. Unstable jacking kills people. Call Ontario Towing at (613) 619-4545.

Tire Pressure: What You Need to Know

Tire pressure is one of the most overlooked aspects of vehicle maintenance. Most drivers never check it until something goes wrong. Here is what you should know.

Where to find your recommended tire pressure: open the driver's side door and look for a sticker on the door jamb. It lists the recommended PSI for your front tires, rear tires, and spare tire. This number is specific to your vehicle, not to the tire brand.

Check your tire pressure monthly. Tires lose about 1 PSI per month naturally, and more in cold weather. A tire that was properly inflated in September can be 5 to 8 PSI low by January. Low tire pressure causes uneven wear, worse fuel economy, and increases the risk of a blowout.

Cold weather drops tire pressure. For every 5 degree Celsius drop in temperature, your tires lose about 1 PSI. This is why the tire pressure warning light comes on during the first cold snap of the year. It does not necessarily mean you have a leak. It often means the temperature dropped overnight.

Spare tire pressure is different. Most compact spare tires require 60 to 80 PSI, which is significantly higher than your regular tires. Check the sidewall of your spare or the door jamb sticker for the exact number.

Flat Tires in Canadian Winter

Flat tires happen year round, but Ottawa's winters create extra hazards. Potholes form rapidly during freeze and thaw cycles, and they are often hidden under snow or slush. A deep pothole at speed can blow a tire instantly and damage the rim at the same time.

Changing a tire in winter adds complications. Cold metal is harder to grip. Lug nuts contract in the cold and can be harder to loosen. Snow and ice on the ground make jacking unstable. Your hands go numb within minutes if you do not have gloves.

If you get a flat in winter, consider whether it is safe and practical to change it yourself. If you are on a snow covered shoulder in minus 20, calling Ontario Towing for mobile tire service is the safer and faster option. We do this every day all winter long.

Need Tire Help? Call (613) 619-4545

Frequently Asked Questions

Most passenger vehicles require lug nuts torqued to 80 to 100 ft-lbs. The exact specification varies by vehicle. Check your owner's manual for the correct number. If you do not have a torque wrench, tighten the lug nuts as firmly as you can with the wrench and drive to the nearest tire shop to have them properly torqued.

Use a tire pressure gauge. The recommended pressure is usually printed on the sidewall of the spare tire or on the sticker inside your driver's side door jamb. Most compact spare tires require 60 to 80 PSI. Check your spare now rather than discovering it is flat when you need it.

No. Compact spare tires (also called donuts) are designed for temporary use only. Most manufacturers recommend driving no faster than 80 km/h and no farther than 100 kilometres on a spare. Drive directly to a tire shop to have the flat repaired or replaced. Extended driving on a spare can damage the spare tire, your differential, and your transmission.

Some newer vehicles come with a tire repair kit instead of a spare. If you do not have a spare and the tire cannot be repaired on the spot, you need a tow. Call Ontario Towing at (613) 619-4545 and we will get you and your vehicle to a tire shop.

If possible, do not change a tire on a highway. Drive slowly on the flat to the nearest exit, parking lot, or wide shoulder away from fast traffic. If you must stop on the highway shoulder, pull as far off the road as possible, turn on your hazard lights, and set up reflective triangles or flares if you have them. Stay on the side of the vehicle away from traffic. If you feel unsafe, stay inside the car with your seatbelt on and call for roadside assistance.

Seized lug nuts are common, especially on vehicles that have not had their tires rotated regularly. Try standing on the wrench handle to apply more force using your body weight. If they still will not move, do not use a hammer or pipe extension as this can break the wheel studs. Call a professional who has the right tools to remove seized lug nuts without causing damage.

It is not recommended. Different tire sizes on the same axle cause uneven handling and can damage your differential over time, especially on all wheel drive vehicles. If only one tire needs replacing, try to match the same brand, model, and size as the other tires on the vehicle. A tire shop can advise you on the best option.

A bent rim will not hold a tire seal properly, which means it will leak air continuously. Do not try to install a spare on a badly bent rim. If the rim is slightly bent, a spare may hold temporarily for a slow drive to a shop. If it is significantly bent, you need a tow. Call (613) 619-4545.

A tire can usually be repaired if the puncture is in the tread area and is smaller than 6 millimetres in diameter. Punctures in the sidewall, near the bead, or larger than 6 mm generally require a full tire replacement. A tire shop will inspect the damage and tell you whether a repair is possible. Do not attempt to plug a tire yourself as a permanent fix.

Always before. Loosen each lug nut about half a turn while the tire is still on the ground. The weight of the vehicle holds the tire in place so you can apply enough force to break them loose. If you jack the car up first, the tire spins freely and you cannot get enough leverage.

Use a star pattern (also called a cross pattern). If your wheel has 4 lug nuts at 12, 3, 6, and 9 o'clock, tighten in order: 12, 6, 3, 9. If it has 5 lug nuts, tighten every other one as if drawing a star. This ensures the wheel seats evenly against the hub and prevents warping.

Yes, but it is more difficult and more dangerous. Wet surfaces are slippery, which makes jacking less stable and lug wrenches harder to grip. Visibility is reduced for passing traffic. If it is raining heavily, consider waiting it out or calling for professional help. If you must change the tire in the rain, work carefully and make sure the jack is on a solid, flat surface.

Need tire help right now? Ontario Towing provides 24/7 mobile tire service across Ottawa and the National Capital Region. Spare installation, flat repair, tire delivery, and towing to a tire shop. Call (613) 619-4545 any time.

This guide provides general information about changing a tire and is not a substitute for professional automotive service. Tire changes involve safety risks. Use proper equipment and caution. If you are unsure about any part of the process, professional tire service is the safer choice. Always prioritize your safety.

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