Motoring Discussion > Rear brakes Miscellaneous
Thread Author: CGNorwich Replies: 7
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New Thu 24 Nov 22 21:14 
 Rear brakes - CGNorwich
My new car, an electric VW ID 3 has drum brakes on the rear. Now I don’t think I have had a car that didn’t have discs all round for about 20 years and am intrigued as to why VW have chosen drums. Any ideas?
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New Thu 24 Nov 22 21:47 
 Rear brakes - sooty123
www.autoevolution.com/news/why-drum-brakes-make-sense-on-evs-149568.html
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New Thu 24 Nov 22 21:54 
 Rear brakes - Bromptonaut
Possibly easier to integrate service and parking brakes?

Objectively, is there any advantage with discs rather than drums at the rear?

In other words, is discs all around worth anything more than marketing puffery?

Both our current cars, 2013 Berlingo and 2016 Skoda Fabia, are all disc.

Previous Berlingo, a 2005 model, had drums at the rear. Even fully loaded on Alpine passes I can't say it felt under braked.
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New Thu 24 Nov 22 23:02 
 Rear brakes - smokie
You'll probably find, as I did with the Ampera, that your brakes will bind through rusting and need replacement because of that (at about 40k miles in my case) even though they are barely worn.
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New Thu 24 Nov 22 23:06 
 Rear brakes - zippy
Apparently Teslas don't need rear brakes...

insideevs.com/news/561545/tesla-model3-missing-brake-pad/

:-D
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New Thu 24 Nov 22 23:08 
 Rear brakes - Lygonos
ID3 is RWD - all the regen is from the rear wheels so no need for uber brakage.

Drums are also less likely to corrode and are often maintenance free for 100k+ miles.
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New Fri 25 Nov 22 09:03 
 Rear brakes - Zero
Weight is an issue in petrol driven cars, to achieve the required emission levels. Drums weight more than disks.

Emissions dont matter in leccy cars, (or rather they are not measured in the right way) and they are so heavy anyway, and some of the braking is regen, why go with disks.
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New Fri 25 Nov 22 12:18 
 Rear brakes - R.P.
The UP! has rear drums. I thought it was odd when I spotted them. Brakes are fine.
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