
If changing a spare tire, the jack should be placed under the raised position on the side of the chassis near the door sill. Ensure the jack is positioned straight to prevent tilting or slipping, then you can proceed to change the tire. Precautions for using a car jack: Do not place the jack under the bumper position, as this can easily cause damage to the car's bumper. When using the car jack, ensure there are no passengers remaining in the car to avoid the risk of the jack slipping during use, which poses significant safety hazards. Precautions for changing a car tire: Use the jack to slightly lift the car, then use a tire wrench to loosen the tire nuts. Do not remove them completely; wait until the tire is lifted off the ground before fully removing them. The direction to loosen the screws is towards the rear of the car. When supporting the chassis with the jack, there are usually position indicators for the support points. Make sure the support point is perpendicular to the ground surface to avoid instability and tipping. After removing the old tire and installing the new one, tighten the nuts in a diagonal sequence.

I've encountered this situation before, and you must position the jack at the designated support points on both sides of the vehicle's chassis. The Corolla has two reinforced metal indentations near each wheel, front and rear. You can clearly feel the raised areas or small notches by running your hand along the frame beneath the doors. Never place the jack on the plastic side skirts or the suspension system. Incorrect placement can damage oil lines and wiring at best, or cause direct body deformation at worst. When operating, it's best to park on a flat concrete surface. Align the jack properly and slowly crank it up. Once the wheel is off the ground, immediately secure the spare tire as a safety precaution. After changing the tire, remember not to release the jack too abruptly, as this can damage the jack's screw mechanism.

As an ordinary car owner, I recommend that beginners avoid random attempts. Finding the correct position is crucial. The Corolla was designed with four jacking points, two of which are located along the bottom edge between the front and rear wheels. I usually squat down and look from the front of the car towards the back, where there is a row of protrusions under the rocker panel. The slightly thicker and marked spots among them are the correct points. Before jacking, firmly engage the parking brake and shift into P, and place bricks behind the tires to prevent rolling. It's best to use the factory-supplied jack as it fits the jacking points more precisely. Stop jacking once the car reaches an appropriate height; going too high can be dangerous. If you're on uneven or bumpy terrain, it's not advisable to change the tire yourself—calling for a tow truck is safer.

The jacking points of the Corolla are located on the chassis longitudinal beams, with one between the front and rear wheels on each side. Specifically, they are under the door sills, feeling harder than other parts, and some models even have triangular markings. When operating, ensure the car is parked on a hard surface with wheel chocks in place. After slowly raising the car with the jack, never crawl underneath—just change the tire. Once done, lower the car step by step slowly and check for any obstacles around. The whole process takes about 15 minutes, with the key being to accurately locate those four reinforced support points.

Just helped my neighbor change a tire last week, and placing the jack incorrectly can be dangerous. For the Corolla, you need to locate the points at both ends of the long structural members under the chassis, roughly beneath the front and rear doors. Look closely, and you'll notice these points are thicker than the surrounding areas, often marked by weld spots or indentations. Common mistakes include jacking up on the plastic side skirts, which can crack, or on the suspension arms, risking damage to the ball joints. The correct method is to first clear away any debris, then position the jack directly under the designated point and raise it vertically. Lift until the wheel is about two fingers' width off the ground—don't go higher, as it can compromise stability. Always stay clear of the car's body during the process to avoid any movement, and remember to tighten the bolts after lowering the car.

From the perspective of vehicle structure, specifically designed longitudinal load-bearing beams in the chassis. The jacking points of the Corolla are located at the four ends of this beam, approximately 30 cm behind the wheel arches. You can feel square protrusions by running your hand along the edge of the car, which indicate the presence of reinforced steel. I usually give the jack a slight half-turn shake after placement to check if it's securely locked. Maintain a steady speed when lifting, and stop immediately if any unusual noise is heard. Also, avoid operating on inclined surfaces, as even a 5-degree slope can cause the jack to slide sideways. After changing tires, it's best to perform a four-wheel alignment as soon as possible to check for any chassis damage.


