Many car owners switch to large-size aluminum alloy wheels for external aesthetic reasons.
Functionally, the modification of the hub is for heat dissipation and light weight. The hub made of aluminum alloy or magnesium alloy has much better heat dissipation effect than the iron hub, and it can be better if it is matched with the special shape of the hub.
Wheel hub painting: spray first and then bake electrically, which is economical in cost, beautiful in color and durable.
This kind of wheel hub has moderate price and complete specifications. The 65438/60r 15 tires with the degree of 6 195/60r 15mm can be replaced with each other, because the diameters and heights of the two sets of wheels are within the allowable replacement range of 20mm after replacement.
Generally, automobile tires will be marked, for example, the tire is 195/60R 15.
195 means that the tire width is195 mm.
60 indicates that the tire section height is 60% of the tire width, that is, when the tire width is 195mm, the tire section height is195x60% =117mm.
R 15 indicates that the diameter of the hub is 15 inch.
The English letter HK stands for allowable speed code.
Where h stands for rate limiting.
R stands for tire type.
The wheel hub model is146.5j.
14 indicates that the diameter of the hub is 14 inch.
6.5J refers to a J-shape with a width of 6.5 inches and a groove shape.
After understanding the basic tire labeling specifications, there is a set of rules for mutual exchange when choosing tire replacement. It should be noted that the diameter and height of the tire should not exceed 20mm when replacing the tire, and the increased tire size can be replaced within the allowable range.
The calculation method is as follows
(tire height × 2)+ tire diameter (mm)= hub diameter height.
Take this set of 185/65HR 14 tires as an example (120.22)+355.6=596mm, then the wheel diameter and height of this set of 185/65HR 14 are 596mm. If the wheel hub is enlarged, the 65438/60r 15 tire with the diameter and height of 6 195/60r 15mm can be used, because the difference in diameter and height between the two sets of wheels is within the allowable replacement range of 20mm after replacement.
Electroplated wheel hub: silver plating, water plating and pure plating. Although the silver-plated and water-plated wheels are bright and vivid in color, they last for a short time, so they are relatively cheap and are loved by many young people who pursue novelty.
Pure electroplating wheel hub has long color retention time, which can be said to be high quality and high price. Some mid-to high-end cars will come standard with pure electroplated wheels.
Consider the weight of the hub.
Steel wheel hub: The process is simple, the cost is relatively low, and the metal has strong fatigue resistance, but it is bulky, with large inertia resistance and poor heat dissipation, and it is very easy to rust.
Alloy wheel hub: light weight, low inertia resistance, high manufacturing accuracy, small deformation and low inertia resistance when rotating at high speed, which is beneficial to improve the straight-line driving performance of the car and reduce the rolling resistance of the tire, thus reducing fuel consumption.
2. Improvement of automobile shock absorber and spring.
The existence of shock absorption system, 1, is to cushion the unevenness of the road surface and make driving more comfortable; The second is to keep the tires in contact with the ground when driving on uneven roads. For players, the only purpose of modifying the suspension system is to improve maneuverability.
Some people will replace the shock absorber and the spring separately, but the best suggestion is to deal with the high-performance shock absorber and the progressive short spring together. The reason is that all high-performance shock absorbers have their best working stroke range, and the original spring will make the shock absorber work below the upper stroke limit, which can not make the shock absorber play its maximum benefit.
= = = = = = Anti-roll bar = = = = = = =
The main function of the anti-roll bar is to restrain the roll, which is not conducive to improving the floating feeling when going straight at high speed on a flat road.
The anti-roll bar has no effect when expressway goes straight and becomes more stable. If you feel uncomfortable when you go straight, start with shock absorbers and springs.
If the stability of the car is suitable when going straight, but the roll when turning or changing lanes is unacceptable to you, then you should change the anti-roll bar first.
Suspension connection, strut, steering mechanism, anti-roll bar, shock absorber and spring are all connected with the car body through gaskets. Generally, the floor mats are made of rubber to reduce noise and vibration from entering the car, so the floor mats will distort and affect the feedback that drivers can get.
When the cushion turns or bears the torque generated by braking, it will destroy the tracking performance because of the torsional deformation of the cushion and the change of other positioning angles.
Hard pads and high-performance springs, shock absorbers and anti-roll bars ensure more accurate steering and suspension actions. Generally, the reinforcing pads for highways are made of hard rubber, but in racing cars, in order to minimize the impact of the pads on steering and suspension, metal materials are usually used as the materials of the pads. Of course, hard pads will greatly increase noise and vibration.