The Difference Between Independent Suspension and Non-independent Suspension
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The differences between independent suspension and non-independent suspension are: 1. Different structures: Independent suspension means each side's wheels are individually connected to the body via elastic suspension; Non-independent suspension means both sides' wheels are connected by an integrated frame, with the wheels and axle together suspended under the body. 2. Different characteristics: Independent suspension reduces overall body impact and improves wheel traction; Non-independent suspension features simple design structure, lighter weight, and smaller space occupation. Additionally, their classifications differ: Independent suspension mainly includes MacPherson strut, double wishbone, multi-link, etc., and most modern cars adopt independent suspension systems; Non-independent suspension commonly includes torsion beam, trailing arm, and leaf spring types.
I've done quite a bit of research on car suspensions. Independent suspension means each wheel has its own suspension system, allowing it to move up and down independently without affecting the others. For example, when the left wheel hits a bump, the right wheel remains stable. This provides a more comfortable ride and precise handling, especially on rough roads or during high-speed turns, with minimal body sway. Non-independent suspension, on the other hand, connects the wheels via an axle, so when one side moves, the other side follows—like how rear passengers feel pronounced movements over speed bumps. In terms of differences, independent suspension is commonly used in the front wheels of sedans or luxury cars to enhance the driving experience, though it's more complex and costly to maintain. Non-independent suspension is cheaper and more durable, often seen in the rear suspension of trucks or entry-level SUVs. When choosing a car, prioritize independent suspension for city driving to reduce fatigue, while for off-road or heavy-load scenarios, consider non-independent suspension for cost savings.
With extensive driving experience, the difference in suspension is quite noticeable in daily use. Vehicles with independent suspension have less vibration over bumps, providing a more stable seat feel and reducing fatigue on long drives; they also respond quickly during turns with better roll control. Non-independent suspension tends to feel more wobbly, with stronger jolts in the rear seats, affecting comfort. From a cost perspective, non-independent suspension is simpler, more durable, and cheaper to maintain, making it suitable for budget-conscious owners; independent suspension enhances quality but may come with higher maintenance costs. SUVs often utilize both: urban models like the RAV4 use independent suspension for smoothness, while off-road vehicles like the Jimny opt for non-independent suspension for durability. During test drives, pay attention to how they perform on uneven roads.
My old car has a non-independent suspension, which is cost-effective and practical. It has a simple structure with fewer parts, making maintenance cheaper and repairs quicker; fuel consumption might be slightly better. The downside is a noticeable shake on uneven roads and lower comfort. Independent suspension offers better comfort but is more complex and costly. Choosing a car depends on needs: opt for non-independent if you often drive on rough roads or have a tight budget; choose independent only if you prioritize refinement and are willing to pay more.
