No matter how powerful the engine of a car is, how fast it accelerates, if it lacks tires, it will be useless and will not be able to show strong performance. As the only equipment in a car that is in contact with the ground, the size, material, and material of the tire will affect the grip, quietness and even fuel saving ability of the tire on the road, and in the hot summer, it is more likely to cause a puncture due to high tire pressure! This shows the importance of tires, but how much do you know about tires? Through the 8 tire Qa, you can better understand the tires on your car after reading it.
Q1: What is the tire size? A: Take the common 205 55R16 as an example, 205 means the tire tread width is 250mm, 55 means 55% aspect ratio, and R16 refers to 16 inches. A sports car will have a lower aspect ratio and perform better in handling, while an SUV car will have a higher aspect ratio and will be more comfortable.
Q2: What is the most suitable tire pressure?
A: The tire pressure required for SUVs, sedans, and sports cars of each brand is different, and there is generally a recommended cold tire pressure data under the B-pillar after the front door is opened. High tire pressure can help improve fuel consumption, but it also increases the chance of a puncture. Tire pressure that is too low can improve grip, but it also makes tires more prone to deformation and shortens tire life.
Q3: When changing tires, should I choose the tire that has been manufactured most recently?
A: There is a set of four-digit numbers on the side of the tire, such as 0522, which represents the tire manufactured in the fifth week of 2022, roughly around the end of January 2022. Because tires are composed of chemicals, the oil content is high when they are first manufactured, and the rubber molecules are not stable, so they need to be placed for a period of time to stabilize before use. It is recommended to choose tires that have been placed for more than 3 months after manufacturing, and tires that exceed 6 years as stipulated in the national standard are not recommended to be purchased.
Q4: Do I need to do wheel alignment when changing tires?
A: Tire change does not have to do four-wheel alignment, the site can be judged by the machine test, but the tire will affect the tire positioning because of the road potholes, bouncing, or parts wear clearance, so it is recommended to adjust the tire every 10,000 kilometers and carry out four-wheel alignment every 20,000 kilometers, so that the vehicle can also maintain a stable state while driving.
Q5: Can I continue to use the repaired tires?
A: Walking on the road, the tire will inevitably be nailed, if it is a tread nail, the tire does not leak after repair, you can continue to use; If it is on the sidewall or shoulder, even if the tire is repaired, the tire will continue to squeeze and deform and leak again when driving, and it is necessary to directly replace the new tire to ensure driving safety.
Q6: How often do I need to pump my tires?
A: Check once a month, pay attention to the tire pressure, but if the temperature changes greatly, you can increase the frequency of checking the tire pressure. You can also check whether there is a tire that is obviously flattened before you get on the car, or check the tire pressure information after getting on the car.
Q7: When should I change my tires?
A: Although the regulations require that the tread depth is left 16mm when it has to be replaced, but in fact, before that, the tire performance will be greatly reduced, the use of 10 yuan coins, you can also use the tread groove depth meter to confirm, if you are not sure whether the tire should be replaced, you can be checked by the technician, the national standard stipulates that the tire service life is up to 10 years from the date of manufacture.
Q8: Is it necessary to replace the special tires after buying an electric car?
A: Electric vehicles can still use the tires of general fuel vehicles, but electric vehicles are heavier than fuel vehicles, and the torque of electric vehicles is large, in addition to lightweight tires to maintain sufficient endurance, but also to take into account high rigidity, so the use of special tires for electric vehicles can make electric vehicles play a better role in handling and improve endurance.