Hot drumb brakes

Faults and Technical chat for the CUPRA Born
MarcozBorn
Posts: 16
Joined: Thu Apr 28, 2022 3:22 pm

Post by MarcozBorn »

Hi, Someone has touch the drumb brakes?
Mine are hot after 50 km , any suggestion?
Thanks

monkeyhanger
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Joined: Tue May 31, 2022 8:12 pm

Post by monkeyhanger »

Your use of km rather than miles suggests you're not in the UK - whereabouts are you? The drum brakes shouldn't be doing a lot in normal driving, but I haven't tried seeing how hot mine get (I am in the UK). If they are excessively hot, then drum brakes being partially seized on would be a possibility, but you should see a sizeable reduction in efficiency as a result.
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Daveion
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Post by Daveion »

MarcozBorn wrote: Thu Aug 11, 2022 9:10 pm Hi, Someone has touch the drumb brakes?
Mine are hot after 50 km , any suggestion?
Thanks
Was there any smell of burning? It's quite normal for brakes to run a little hot as the breaking process after all is achieved through friction.
What made you check?
Born V2-Tech L collected June 22
BMW Z4 e89 sDrive30i Highline
BMW Z4 e85 3.0i SE
MarcozBorn
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Joined: Thu Apr 28, 2022 3:22 pm

Post by MarcozBorn »

I'm from Italy, my Born e-boost has only one month and 1500 km (900 Miles).
I know that Is normal for brakes to run hot as breaking process, but After 50km of mororway without significant breakes, front disk was colder than rear drumb
Last edited by MarcozBorn on Sun Aug 14, 2022 8:21 am, edited 1 time in total.
MarcozBorn
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Joined: Thu Apr 28, 2022 3:22 pm

Post by MarcozBorn »

Today I drove 35km in motorway, 130 km/h and the drumb brake was warm: not hot, but not cold.
Is it normal?
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Daveion
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Post by Daveion »

I'm doing a 60 mile Motorway run later today. I will check mine and let you know how they are. If there was a binding fault I would think it would be on one side not not both.
Born V2-Tech L collected June 22
BMW Z4 e89 sDrive30i Highline
BMW Z4 e85 3.0i SE
Nacaduct
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Post by Nacaduct »

Out of curiosity: Why are you so concerned with the temp of the drum brakes?
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Daveion
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Post by Daveion »

Daveion wrote: Sun Aug 14, 2022 8:51 am I'm doing a 60 mile Motorway run later today. I will check mine and let you know how they are. If there was a binding fault I would think it would be on one side not not both.
After 60 miles rear drums were warm, maybe 45C. Ambient was 32C so that seems reasonable to me.
Born V2-Tech L collected June 22
BMW Z4 e89 sDrive30i Highline
BMW Z4 e85 3.0i SE
MarcozBorn
Posts: 16
Joined: Thu Apr 28, 2022 3:22 pm

Post by MarcozBorn »

Nacaduct wrote: Sun Aug 14, 2022 3:18 pm Out of curiosity: Why are you so concerned with the temp of the drum brakes?
Because there is a manifactur issue for this problem in the old ID3 (my 2020-2021 that burnst the brake pad) and because the rear brake absorb precious watt
MarcozBorn
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Post by MarcozBorn »

Daveion wrote: Mon Aug 15, 2022 7:15 am
Daveion wrote: Sun Aug 14, 2022 8:51 am I'm doing a 60 mile Motorway run later today. I will check mine and let you know how they are. If there was a binding fault I would think it would be on one side not not both.
After 60 miles rear drums were warm, maybe 45C. Ambient was 32C so that seems reasonable to me.
Okkk, thank you very much.
I'd like to obtain maximum efficiency from my car.
My rear drumb brake goes same times better other time worst but I will ask to the dealer to check because the rear drum must be cold if I dont't brake.
Sorry for my poor English ;-)
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