Tyres are the only connecting bridge between the vehicle and the ground and are essential to the safety of the vehicle. The maintenance, maintenance, repair and replacement of vehicles, as vulnerable items, is a recurring problem in the day-to-day use of vehicles. In the process of helping clients to select used vehicles, apart from oil and machine filters, he was mentioned as the most frequent replacement of tyres for clients. The condition of tyres has a direct impact on the safety of the vehicle, and their importance cannot be ignored。
Today we are going to go into the topics of routine use, maintenance and replacement of tyres。
Tile pressure is correctly and regularly set to increase the comfort of driving, reduce in-car noise and improve fuel economy, while increasing the useful life of tyres。
It is generally recommended that all tyres (including spares) be inspected at least once a month for the tire pressure in a cooling state。
If conditions permit, it is advisable to use a tyre test form to check air pressure accurately when tyres are cooled。
It was felt that vehicles were insufficiently flexible to avoid shocks, that tyres were of high noise, that the centre of the tread was rapidly worn and that the risk of an explosion increased accordingly. At the same time, fuel consumption increased and wear on both sides of the tires increased. Control performance has decreased and vehicles are prone to deviation. These problems may be caused by multiple injuries to tyres, such as nailing, cutting or aging of gas-gate rubber and cracking。
(1) examination of tyre integrity
Check whether the tyres are fractured or damaged around and on both sides of the ground and see if there are nails or stones embedded in the tyres. The damage to the side of the tyre and the cutting can seriously affect its normal functioning。
(2) attention to tyre wear
Check whether tyres have extensive wear, local wear or fault. Overuse, incorrect driving habits and inappropriate brakes can lead to full or partial flattening of tyres. In addition, the release of inappropriate solvents on tyres can cause changes in rubber material and lead to large tyre swelling。
(3) deepness of tyre trench
We can use tire grinding limits to indicate a meter or a walk card to check the depth of a tyre ditch. It is recommended that you replace the tires if the measurements indicate that the gutter is less than 1. 6 mm deep or has reached the wear limit mark。
In general, tyres have a useful life of approximately 50,000 kilometres or five years, but the specific life span depends on factors such as driving habits, road conditions, tyre pressure, use of the environment and temperature. The replacement of tyres is particularly important when they are seriously ageing as a result of their long use or when their performance is affected by severe wear and tear。
In the replacement of tyres, it is necessary to avoid mixing different brands, models, trajectories and tyres with significantly different levels of old and new use on the same axle (except for the use of spare parts in emergencies). In addition, the replacement of tyres requires a wheeled balance test and correction, which may result in severe tremors and abnormal wear and tear of tyres during high-speed travel。
(3) is the number of tyres replaced selected by four or two? This depends largely on the specific requirements of the vehicle and the owner's budget. It may be more economical to replace only severely worn tyres if only part of the vehicle is worn and other tyres are still available for some time. However, replacement of all tyres may be easier if all tyres are near the end of their useful life or the degree of wear and tear, in order to ensure consistency in the degree of wear and tear of each tyre, thereby optimizing vehicle manipulation and stability. For vehicles with a four-way system or rear-wheel drive that require good grip, it is recommended that both front- and rear-wheel tyres be replaced to ensure the control and safety of the vehicle。
When a spare tyre is used, the speed shall not exceed 80 km/hour. Back-up tyres are used only as emergency cases and are not suitable for long-term use as primary tyres。
The noise of the tires is the sound of friction between tyres and the road while the vehicle is travelling at high speed. The quality of roads and the condition of vehicles can affect the size of foetal noise, especially when it is poor. In addition, there are significant differences in the amount of fetal noise generated by tar and concrete roads。
There are two main sources of foetal noise:
The first is air noise caused by the movement of the air in the space of the tyre and by disturbances in the air around the tyre
Second is the noise of tyres caused by the vibrations of the fetuses and trajectories, in particular some of the harder tyres, which makes it easier for drivers to feel the presence of the noise。
The impact of frictions on the tread and the ground can cause noise, especially when travelling on the pits. In addition, the vibrations and noise resonates with components such as slabs and wings plates, and magnifies the noise into the vehicle. The level of noise varies when travelling on different roads, for example, when the noise on the concrete road is greater than on the asphalt road, the noise on the rough road is greater than on the thin road, and when the windows are opened, the noise is more pronounced. These noises are mostly unavoidable. It should be noted, however, that in the event of excessive foetal noise, it is necessary to check whether the tyre is covered with stones, whether the tyre's pressure is normal and whether there are anomalies in the chassis。
(1) changes in four-wheel positioning parameters may result in abnormal wear and tear of tyres and deviation from the direction of vehicles. It is therefore recommended that the owner conduct regular inspections and adjust the four-wheeled positioning and balance。
(2) periodic examination of the degree of wear and tear of tyres is necessary, as the strength of tyres diminishes as the wear increases. When tyres are worn to the safety limit mark, they should be replaced immediately to ensure the safety of the vehicle。
(3) when stopping, it is important to avoid the rubbing of tyres on or on the shoulder so as to effectively prevent problems such as tyre scratches, drums and leaks。
(4) if the tyre is punctured by a nail and the nail remains in the tyre, it is recommended that the spare be replaced as soon as possible. The continued use of nailed tyres is not recommended, even if there is no apparent leakage. Because of the fractured tyre damage after pacing, the nails are capable of impacting the ground when the tyre rolls, causing further damage to the side of the flat and increasing the risk of an explosion。
Do not rush out of the nails, as incorrect operations may cause additional damage to tyres. The correct approach is to replace the spare, place the damaged tyres in the trunk and then go to the repair shop and ask professionals to process them。
Tires are essential to our safety, so we should develop a habit of daily inspection and maintenance. Tyre checks are equally important for friends who buy used cars. How do we judge whether second-hand vehicles need to replace tyres? The following are three ways to help you make decisions easily。
I. How do you judge whether tyres need to be replaced
Ii. Recommendations for examination and replacement of tyres after purchase of used vehicles
Iii. Three practical approaches to tyre replacement
