Every driver faces a situation where it is necessary to lift a car by the wheel, whether it is a scheduled tire change for the season or an emergency repair of a flat tire on the side of the road. Despite the apparent simplicity of the process, incorrect installation jack or choosing the wrong support point can cause the vehicle to fall, damage to the sills and, worst of all, injury to people.
Modern cars have a complex underbody design, where areas that can support the weight of the car alternate with areas of thin metal or plastic. Low profile tires and the lack of a full-fledged frame in many crossovers make the lifting procedure more demanding in terms of precision. In this material we will analyze the technical nuances that will help you complete the job safely.
Before getting started, it is important to understand the physics of the process: a car is a heavy object with a high center of gravity, and its stability directly depends on a level surface and correct positioning lifting mechanism. Ignoring basic safety rules is unacceptable here.
⚠️ Warning: Never stand under a vehicle that is supported only by a jack. Even if it seems to you that it is standing securely, an accidental gust of wind or vibration of the ground can be fatal.
Choosing the Right Jack for the Job
The first step to a successful lift is choosing the right equipment. Standard diamond jack, included with most passenger cars, is intended exclusively for emergency wheel replacement in the field. It has minimal stability and requires a perfectly flat surface for installation.
For garage work or regular tire replacement, professionals recommend using more reliable designs. Hydraulic rolling jacks provide smooth lifting and have a wide support base, which minimizes the risk of distortion. Also popular are screw models with increased load capacity, which are less sensitive to soil quality.
- 🚗 Diamond-shaped mechanical - standard option, suitable only for emergencies on hard surfaces.
- 💧 Hydraulic rolling - ideal for the garage, provides high stability and speed of work.
- ⚙️ Screw rack - good for SUVs with high ground clearance, but requires caution when fixing.
- 🏗️ Pneumatic inflatable - a compact option, powered by an exhaust pipe, convenient on soft ground.
When choosing a tool, always pay attention to lifting capacity. It should exceed the weight of the car by at least 20-30%. If you plan to lift a heavy SUV, a lightweight subcompact car jack may simply not cope with the load or quickly fail.
Preparing the vehicle and work area
The safety of the procedure begins long before you touch the jack. The first step is to choose a smooth, hard surface. Asphalt or concrete are the best options. If you had to stop on the ground, you should place a wide board or a special plastic platform under the base of the jack to prevent it from being pressed into the ground.
After stopping the car, be sure to turn on Parking brake (handbrake). For vehicles with a manual transmission, it is also necessary to engage first gear or reverse. Owners automatic transmissions the selector should be moved to position P (Parking).
An equally important step is the installation of wheel chocks. They are installed under the wheels located diagonally from the one being lifted. For example, if you are changing the front left wheel, the stops are placed under the right rear one. This will prevent the car from rolling away if the brake system fails.
☑️ Checklist for preparing for the climb
⚠️ Attention: Before lifting, be sure to loosen the wheel bolts while the vehicle is on the ground. It will be extremely difficult and dangerous to do this while suspended due to the rotation of the wheel.
Search for standard body reinforcement points
The most critical moment is determining the place where the jack will rest. Modern cars have strictly regulated lifting points, which are indicated by special cutouts in the sills or plastic overlays. An attempt to lift the car by a random part of the bottom is almost guaranteed to lead to deformation of the metal.
Typically these points are located closer to the wheel arches. On many models European manufacturers they have a characteristic rectangular shape with notches. On SUVs with a frame structure, the jack is often installed directly under the frame elements or axles, which have a huge margin of strength.
If you cannot find the markings, contact operating instructions your car. There are always diagrams there showing exact locations for installing the jack. Ignoring these recommendations may cause the thin metal of the sill to become dented, preventing you from lowering the vehicle or, worse, damaging your fuel lines.
| Vehicle type | Lifting point location | Recommended jack type | Risks of error |
|---|---|---|---|
| Passenger sedan | Special cutouts in the sills near the arches | Rhombic / Rollable | Threshold deformation, metal rupture |
| SUV (frame) | Frame, axles, differential | High tackle / Hi-jack | Damage to suspension elements |
| Crossover (monocoque) | Reinforced areas under the bottom | Roll-on with adapter | Dents on the bottom, damage to the tank |
| Sports car (low) | Special grooves for low lift | Low profile hydraulic | Jack failure, body kit damage |
What to do if the standard lifting point is rotten or damaged?
In case of corrosion or damage to a regular place, it is strictly forbidden to use it. It is necessary to move the fulcrum closer to the wheel by placing a wooden block under the body, which will distribute the load onto stronger sections of the side members, or use a rolling jack with a rubber cushion under the suspension element, if the vehicle design allows this.
Vehicle lifting and securing technology
The lifting process should be carried out smoothly and without jerking. Place the jack perpendicular to the ground, making sure that its “heel” is firmly seated at the selected point. Start turning the handle slowly, making sure that the mechanism does not slip or warp.
As soon as the wheel leaves the ground by 2-3 centimeters, the lifting should be stopped. There is no need to raise the vehicle higher than required to remove the wheel. Excessive height increases the risk of instability and makes working with a heavy tool less convenient.
For additional safety, especially if work is carried out on the ground or in windy weather, place the removed wheel or a reliable stand under the threshold (next to the jack). This will create a safety buffer so that if the jack fails, the car will rest on the spare wheel rather than on you or the ground.
Use WD-40 or a similar penetrating lubricant on wheel bolts 10-15 minutes before starting work if you suspect they are stuck. This will make unscrewing them much easier.
If you are using hydraulic jack, monitor the pressure in the system. Sometimes it happens that the valve does not hold pressure and the car begins to slowly descend. In this case, it is urgent to lower the car and replace the tool.
The nuances of lifting different types of cars
Lifting a modern electric vehicle requires special care due to the location traction battery. It is usually located in the floor of the car, and damage to its body due to careless installation of the jack can lead to expensive repairs or even fire. Lifting points on electric cars are often reinforced with additional metal plates.
Owners of cars with air suspension Before starting work, you must force the suspension into maximum lift mode or service mode through the menu in the cabin. If this is not done, the system may automatically begin to bleed air in an attempt to level the body, making jacking impossible or dangerous.
For low sports cars, standard jacks may not be suitable due to low ground clearance. In such cases, special low-profile models or plastic extensions are used, which allow you to cling to standard points without damaging aerodynamic body kit.
⚠️ Attention: When working with cars that have plastic underbody protection, it is often necessary to make cuts in the plastic where the jack is installed. Don't ignore this - the plastic will not support the weight of the car and may crack, damaging the paintwork.
Completion of work and removal from the jack
After installing a spare tire or carrying out repairs, lowering the vehicle should be carried out as carefully as raising it. Make sure that no one is in the immediate vicinity of or under the machine. Smoothly open the jack bypass valve while controlling the lowering speed.
When the wheel touches the ground, do not rush to remove the jack immediately. First you need to tighten the wheel bolts. This must be done in a diagonal pattern (crosswise) so that the disk fits onto the hub evenly, without distortions. The final tightening with the required force is carried out only after the car is completely on its wheels.
The final stage is checking the pressure in the installed wheel and cleaning the tool. Be sure to place the broken tire and dirty jack in the trunk so that they do not damage the interior trim when driving.
The main rule for completing the work: the final tightening of the bolts is carried out only on the ground, when the weight of the car rests entirely on the wheels.
Frequently asked questions (FAQ)
Is it possible to lift a car by the suspension arm?
In emergency cases, when the standard lifting points are unavailable or damaged, experienced craftsmen can use suspension arms. However, this is only permissible for certain structures and requires installing the jack strictly under the ball joint or in a reinforced place on the lever. For beginners, this method is not recommended due to the risk of damaging the silent blocks or breaking.
What to do if the jack falls into the ground?
You must stop climbing immediately. Under the base of the jack you need to place a solid support of a large area: a wooden beam, a board, a stone or a special plastic platform. This will distribute the pressure on the ground and provide stability.
Do I need to lubricate the threads of the jack?
Yes, regular jack maintenance is necessary. The screw part should be cleaned of dirt and lubricated with lithium grease or graphite so that the mechanism does not jam at the most inopportune moment. Hydraulic models require checking the oil level and condition of the seals.
How to understand that the car threshold has begun to deform?
A sign of deformation is a characteristic crunch of metal, a visual change in the geometry of the fulcrum, or a sudden distortion of the jack. If you hear suspicious sounds, immediately lower the vehicle and move the fulcrum.