Double Wishbone vs Macpherson - Pros and Cons of Each Suspension

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When it comes to automotive suspension systems, the most common suspension architectures are double wishbone and MacPherson suspension. Each system has advantages and disadvantages.

Timecode:
00:00:00 - Short intro
00:00:28 - Double Wishbone Suspension Pros
00:01:26 - Double Wishbone Suspension Cons
00:02:13 - MacPherson Strut Suspension Pros
00:03:16 - MacPherson Strut Suspension Cons
00:04:18 - Conclusion

[rocketsurgeon]

Maybe talk a little more about the more technical aspects of each. For instance, roll centers, instant centers, camber gain...that sort of thing. It would also be interesting to compare something like a modern Porsche 911 front suspension (last I remember they used struts) and an economy car...maybe like a Corolla, just to see how much and where they differ and if a Porsche really has that much difference in that type of design over a "lesser" vehicle.

[Roq-stone]

McPherson for manufacturer and double wishbone for customer.

[MEDCANWhitewidow]

I’d go double wishbone suspension over McPherson any day.

[TheRVSN]

For a slow and small city car Macpherson is enough. As reliability, stability and security requirements grow, Wishbone is preferred.

[ravim]

My 5th generation Civic had double wishbone suspension. The combination of ride and handling was sublime.

[juksrace]

2:20 picture is double wishbone while you are talking about McPherson suspension

[MegaEvoluzione]

My Alfa 156 has double wishbone and she handles great, one big advantage of double wishbone is that the wheel is always perpendicular to the road surface, thus maximising the contact patch, whereas the McPherson moves in an arc, the inside wheel in a curve has minimum contact.

[raulbustamante]

it is incorrect to say that mcpherson produces more body roll since the wheels are interconnected. McPherson is a completely independent design. What really happens is that it has an arc shaped travel, changing camber depending on its position, but that only affects the contact patch and the wheel incidence on the ground, not the roll of the vehicle

[mickvonbornemann]

Some of his strut pics are actually pics of double wishbone suspensions, just with a strut like shock spring tower

[StanleyKubick]

you're pronouncing mcpherson wrong

[grahamcrooks]

Error: at 2:40 You show a double wishbone suspension which happens to use a Macpherson strut for the spring element, a blend of the two systems. But you call it a Macpherson.

[daltonknox]

Macpherson is ubiquitous for one reason - cost.

[Jd-op]

제가 딱 이 증상이었습니다.!!

50mm볼트만 조여달라고 지방에 외제차 정비 잘 하는곳 몇 군데를 가봤지만 다 요크를 바꿔야한다, 디퍼를 바꿔야한다는 소리들만하고 이 영상을 보여줘도 믿지를 않더라구요...

어쩔수없이 자가정비소 가서 언더커버, 방열판, 머플러 뒤쪽만 탈거하고 드라이브샤프트랑 디퍼만 분리시킨상태로 50mm볼트 조이니까 볼트가 180도 정도는 돌아간거같습니다.(1m 살짝넘는 연장봉써서 빡쌔게 조였고 메뉴얼상 토크는 100Nm이니까 연장봉이랑 제 몸부게랑 계산해보면 비슷한 토크는 나올겁니다) 조이고 바로 80~90km/h로 달려봤더니 증상완화 되었습니다.

정말 감사합니다!!! 메르카바 화이팅!!

[grahamcrooks]

One other thing that is not discussed is the need to reduce the scrub radius for Front Wheel Drive use. This is more easily achieved if the upper wishbone outer ball joint is located above the wheel. Cannot do that with Macpherson.

[universeltuto]

my car has the double wishbone, and it's exactly what you said this is pretty stable especialy in corners

[_entrxpy]

The weight isn’t really true. McPherson systems are inferior because the forces aren’t all aligned with the arms, so they introduce bending moments in the system. That requires having beefier parts in order to achieve the same rigidity as a double wishbone, so that means more mass. So this pretty much equals the extra components in the DW system

[vinzanity]

I found the difference handling-wise by experience. I got my first cars about 20 yrs ago, and one was McPherson (Toyota Vios/Vitz) and the other was double-wishbone(Mitsubishi Galant), but I didnt know that at that time. The difference in handling on twisty roads was night and day. I owned the Toyota first, so I was used to being careful when driving on twisty roads because the back would sway out. When I got the Galant several months later, and drove on the same twisty road, I was amazed that I could go faster without any body roll. Years later I realized it was the Galant's suspension that caused the big difference in handling. Also years later, I found out the Miata has double wishbone and coupled with the perfect weight distribution, no wonder many enthusiasts swear by it.

[juhakivekas]

I would claim that 4 times out of 5 MacPherson is heavier than a proper dwb - or even 9/10.
One of the worst features of MacPherson is that when lowering a car the roll centers fall 2.5 to 3 times as much as the lowering of the car and then you need a stiffer AR-bar which is ok for a track car but road tuned cars do not like excessive warp-stiffness. Also MacPherson tends to loose camber gain quickly when dropped. Further more MacPherson has a lot more friction as the dbw.

And yet, most cars with MacPherson handle still well. Also I think the big noise about Porsche GT3 having a dbw and being like "night and day" compared to the older MacP is pure marketing bs. When something is so good to begin with there is no way to make it "night and day" better. It certainly is a little bit better.

[hanynowsky]

Porsche has been sticking to multiple link McPherson on the front for decades as well as bmw and mercedes, for a good reason.

The standard McPherson is what you said but the ML version of it is the way to go.
Body roll can be fixed by well engineered sway bars.
Have you tried the E60 with the hydraulic sway bar?

[mikem.]

For the creator: Your on the right track with this video. Learn from the comments and use it in the next video. Your subs and view will explode, I'm sure. Good luck!