Verify the third-party measurement of ultra-quiet tire Goodyear Royal Ride

Foreword:
　　　In the last tire evaluation, we brought you the dry ground test of Bridgestone’s top running tire S001, which made you appreciate the strong performance of a top running tire. However, for ordinary car owners, in addition to the grip, the mute performance is also a key indicator for choosing tires. As early as the release of Imperial Ride at the end of July, we had already experienced the performance of Imperial Ride at Zhuhai Circuit, but it was only a short test drive and we could not fully understand the performance of Imperial Ride. In this tire test, we found four Goodyear royal tires, and we want to measure the performance and mute ability of this self-proclaimed quietest tire in history through professional instruments.

Related links about Yu Cheng:

Vehicles and environment tested:
　　　 We borrowed a BMW 3 Series 318 E46, and its 2.0L natural inspiratory energy output is 105kw, which is 200Nm. The test site is a newly paved two-way two-lane asphalt pavement. The distance between piles and cylinders tested around piles is 18m. The noise test section is asphalt pavement with few vehicles.

60km/h test around piles:

　　　 The speed of entering the pile barrel area is 60km/h during the test around the pile. We use a special acceleration measuring instrument to measure the lateral acceleration of the vehicle around the pile to observe whether the tire slips and its maximum lateral grip.

　　　 From the data chart of lateral acceleration around the pile, we can see that the maximum acceleration that Goodyear Royal Ride can get when it is around the pile is 0.989G, and there is no lateral acceleration fluctuation when the curve peak area is seriously skidded. However, the lateral acceleration limit of an energy-saving tire of a certain brand is slightly lower, and the maximum acceleration can only reach 0.879G, and the lateral acceleration fluctuation caused by slipping appears in the peak area of the curve. Except for the old and new differences between the two sets of tires (the energy-saving tire of the original car has just been replaced for one month, and the tread thickness is far from reaching the wear limit; The Imperial Ride is a new tire), and the dry handling ability of the Imperial Ride is better than that of the energy-saving tire used for comparison.

　　　 In terms of driving experience, when we first got on the bus, we have noticed that the tire has a noticeable deformation with the increase of the load of the car. This is caused by the soft shoulder of the royal tire (see the picture above). We can clearly perceive this when we feel the hardness of the shoulder with our hands when the rim is not assembled. The softer shoulder allows the whole tire to deform to a certain extent to absorb the vibration, thus making the driver feel that the tire is softer and more comfortable when driving. We also tested the limit of the imperial car around the pile. The imperial car won’t slip when it doesn’t touch the limit area around the pile, but when it reaches the limit, it will slip immediately and grab the ground again in a short time (several hundred milliseconds). It feels a little longer from slipping to grabbing the ground again, which is easier to detect. Of course, the average car owner will not go around the pile like us, let alone find the limit point when going around the pile like us. The dry land performance of Yu Cheng is excellent for its positioning.

six0km/h acceleration and braking test:

　　　 The 60km/h acceleration and braking test are combined, and we record the longitudinal acceleration, acceleration time and braking distance of the car body during the whole process. Accelerated Start We use the catapult start mode (this 3 Series E46 is an automatic gear), step on the brake and accelerate at full throttle. When the speed reaches 3000 rpm, release the brake and the vehicle will eject like a bullet. Some netizens questioned whether there was no such car. When we test, we step on the brake and accelerate at full throttle, and the speed will rise from 1000 rpm to 3000 rpm, and we can’t continue to increase it. This is obviously because the DSC dynamic stability system and DME management system limit the power output. We guess that BMW’s on-board computer has been able to identify this catapult starting mode and make some restrictions and optimizations.

　　　 There is no noticeable slip in both sets of tires, but there is still a difference in data. Goodyear Royal Ride can achieve 0.567G longitudinal acceleration at the beginning, while the energy-saving tires of the original car can only provide 0.455G acceleration. The test data of the energy-saving tires of the original car also showed that there was jitter in the peak acceleration area, which also proved that there was slippage at that time. In contrast, the imperial ride is better in longitudinal grip.
　　　 In the emergency braking test data, we can see that both tires skidded to a certain extent during emergency braking. The maximum acceleration of the original set of tires was slightly higher than that of Imperial Ride for the first time, but Imperial Ride could get greater deceleration when it grasped the ground again after skidding. The maximum deceleration of the original energy-saving tire during emergency braking is 1.142G, while the maximum deceleration of the imperial vehicle is 1.264G g.

　　　 Because of its higher longitudinal grip performance, the acceleration time and braking distance of the royal ride are faster, but the difference is not obvious.

60-80km/h noise test:

　　　 We use a noise meter to measure the tire noise when the vehicle is running at a speed of 60-80 km/h. As can be seen from the overlay below, the dark noise curve of Royal Ride is lower than that of another set of energy-saving tires, which is about 1-2 decibels lower on average. Considering the road conditions, we didn’t conduct a higher-speed noise test. What is the effect of noise reduction level of 1-2 decibels? We can explain here that if there is a noise reduction of 3 decibels, people can clearly distinguish the difference in noise volume, so a noise reduction of 1-2 decibels can be perceived. Of course, the higher the speed, the more obvious the difference in noise reduction performance of tires. Soft tread and shoulder also "enhance" the noise reduction effect of Yu Cheng from the driving experience.

Temperature hardness test before and after test:

　

　　　 We have also tested the temperature and hardness of different tires before. In contrast, the tread material of Yuchai is soft, and the temperature rise of the tire is low after the test. Soft tread has better comfort, while less temperature rise enhances its energy-saving effect. We are satisfied with the temperature rise and ride comfort of the Royal Tire before and after the test. Royal ride is quite competent as a comfortable and energy-saving tire.

More test pictures:

　
　
　

More related links:
Experience the Top Performance Bridgestone S001 Third Party Testing
Tire replacement instructions and tire selection guide

Summary:
　　　As a comfortable and energy-saving tire, Imperial Ride has done a good job in comfort and energy saving, and at the same time, it has a good performance in handling. For those of us who have just finished testing a sports tire, we can better understand the comfort of riding. Compared with the comfortable and energy-saving tires of the same grade, Imperial Ride has better handling performance. In terms of cost performance, the market price of Royal Ride is competitive. For those users who are dissatisfied with the noise and comfort of the original tires, Goodyear Royal Ride is a good choice.