Do you think, "My car is still comfortable, so it's fine"? This time, we'll thoroughly examine the real deterioration of a suspension system after 160,000 km of driving by comparing the shaking of a paper cup of coffee inside the car with a brand new KYB shock absorber in the pit. We'll reveal the true nature of the unpleasant vibrations that affect family members in the back seat, which you might not notice from the driver's seat, and explain the true value of refreshing your suspension from a field perspective.

This time, using a Honda Odyssey (RC4 Hybrid) as a model, we physically visualized the deterioration of shock absorbers over time. We'll show you how dangerous it is for amateurs to think, "It's still okay because there's no oil leak." A genuine suspension system with over 100,000 km of driving has lost all its internal gas and rebound force, and rubber parts such as the upper mounts, dust boots, and bump stops are completely flattened. While the shaking may feel mild in the front seats, which are closer to the car's center of gravity, it transforms into a harsh jolt and an unpleasant shaking sensation in the back seat. This video explains the mechanism behind the dramatic effect of refreshing the suspension of a family minivan using KYB's NEW SR MC and other components.

[Professional's Note]
When replacing suspension components, it is absolutely essential to replace not only the shock absorber itself, but also surrounding rubber parts such as the upper mounts and bump stops simultaneously. Skimping on these parts will cause the supple movement of the new shock absorber to be absorbed by worn-out rubber, preventing you from restoring the original ride comfort.

Should you repair, buy a new car, or give up on it? This video is brought to you by Oobayashi Motors, who takes on that decision-making task from a practical, on-the-ground perspective. Please subscribe to our channel to gain real-world knowledge for wisely and long-term enjoyment of your beloved car.

■ Time Chapters
0:00 Ride comfort deterioration is often discussed in terms of atmosphere
0:12 This time's testing method (coffee in a paper cup)
0:33 Guidelines and questions about suspension replacement
1:24 The degree of shaking in the driver's seat after 160,000 km of driving
2:16 Why is the driver's seat comfortable?
2:51 Testing the severe shaking in the rear seats
3:40 Suspension replacement is a get-out-of-jail-free card to protect your family
4:03 Coffee sloshing violently even at idle
4:48 Pit stop: Comparison of old and new shock absorbers
5:29 Introduction of KYB (NEW SR MC) shock absorbers
6:15 Original shock absorber with completely leaked gas and lost rebound force
6:40 The overwhelming gas rebound force of a new shock absorber
7:40 The actual stroke is surprisingly short compared to the total length of the suspension
8:06 The golden rule of replacing rubber parts such as upper mounts at the same time
8:18 The negative effects caused by flattened rubber
8:57 Suspension replacement complete: Front seat driving test
9:21 Improved steering response and restored rebound
10:46 The true value of new suspension: Rear seat driving test
11:03 Vertical jolts and minor vibrations are completely eliminated
12:00 Suspension refresh for family members sitting in the back of the car
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