finding non drilled discs
Discussion
im really not sure why merc insist on fitting cars with drilled discs BUT is there any way to find a supplier of obviously the same sized discs but not drilled? as if you stick the reg in obviously it just looks at what should be fitted not if anything is compatible. any ideas and its not worth getting custom ones made etc
Trustmeimadoctor said:
im really not sure why merc insist on fitting cars with drilled discs BUT is there any way to find a supplier of obviously the same sized discs but not drilled? as if you stick the reg in obviously it just looks at what should be fitted not if anything is compatible. any ideas and its not worth getting custom ones made etc
Why?I'm struggling to understand why?
Drilled discs can provide greater grip due to increased friction co-efficient. Are more efficient at clearing water which improves wet stopping distances and have a greater capacity for heat dissipation which improves fade and the holes also help clear build up on pads.
They're not drilled just to look nice although imho they do look better.
So the question shouldn't be why do Merc fit them as standard and should really be why other manufacturers do not.
Can you get non drilled ones to fit? Probably but I'd guess that downgrading the braking performance of your car wouldn't be looked upon favourably by your insurance company.
Drilled discs can provide greater grip due to increased friction co-efficient. Are more efficient at clearing water which improves wet stopping distances and have a greater capacity for heat dissipation which improves fade and the holes also help clear build up on pads.
They're not drilled just to look nice although imho they do look better.
So the question shouldn't be why do Merc fit them as standard and should really be why other manufacturers do not.
Can you get non drilled ones to fit? Probably but I'd guess that downgrading the braking performance of your car wouldn't be looked upon favourably by your insurance company.
Edited by hornmeister on Thursday 23 August 13:04
hornmeister said:
I'm struggling to understand why?
Drilled discs can provide greater grip due to increased friction co-efficient. Are more efficient at clearing water which improves wet stopping distances and have a greater capacity for heat dissipation which improves fade and the holes also help clear build up on pads.
They're not drilled just to look nice although imho they do look better.
So the question shouldn't be why do Merc fit them as standard and should really be why other manufacturers do not.
Can you get non drilled ones to fit? Probably but I'd guess that downgrading the braking performance of your car wouldn't be looked upon favourably by your insurance company.
i suppose since the rest of the range with same engine dont have drilled disks but this has the sport kit so get the rather large 345mm disc and 4 pot caliper of the c55 AMG the holes just seem to always fill with friction material Drilled discs can provide greater grip due to increased friction co-efficient. Are more efficient at clearing water which improves wet stopping distances and have a greater capacity for heat dissipation which improves fade and the holes also help clear build up on pads.
They're not drilled just to look nice although imho they do look better.
So the question shouldn't be why do Merc fit them as standard and should really be why other manufacturers do not.
Can you get non drilled ones to fit? Probably but I'd guess that downgrading the braking performance of your car wouldn't be looked upon favourably by your insurance company.
Edited by hornmeister on Thursday 23 August 13:04
Have a look here, they do various options on the same disc when I was looking for a Mini.
https://www.bremboparts.com/europe/en/products/dis...
https://www.bremboparts.com/europe/en/products/dis...
Trustmeimadoctor said:
i suppose since the rest of the range with same engine dont have drilled disks but this has the sport kit so get the rather large 345mm disc and 4 pot caliper of the c55 AMG the holes just seem to always fill with friction material
And there's your answer. You've got "AMG brakes". Drilling and grooving help the pad gases clear as the brakes get really hot. On an AMG, they have a benefit. On a cooking-spec Nobody's going to bother making discs specially for those who regret ticking the bling option box, or bought the wrong car used.
Anyway, if the holes "fill", then that's got you the same end result as non-drilled discs, right? You're happy...?
Trustmeimadoctor said:
i suppose since the rest of the range with same engine dont have drilled disks but this has the sport kit so get the rather large 345mm disc and 4 pot caliper of the c55 AMG the holes just seem to always fill with friction material
That's the material that would otherwise be between pad & disc possibly affecting braking. After re-reading my post, Apologies if it came across as argumentative, it wasn't meant that way. I was genuinely trying to explain why in most cases drilled discs are better.
Whether the car is driven in a way that the improvements would be needed however is another matter I would argue probably not if it's on the road.
TooMany2cvs said:
And there's your answer. You've got "AMG brakes". Drilling and grooving help the pad gases clear as the brakes get really hot. On an AMG, they have a benefit. On a cooking-spec taxi car like yours, they're just bling.
Nobody's going to bother making discs specially for those who regret ticking the bling option box, or bought the wrong car used.
Anyway, if the holes "fill", then that's got you the same end result as non-drilled discs, right? You're happy...?
Why do people have to respond in a rude manner to an ordinary question!Nobody's going to bother making discs specially for those who regret ticking the bling option box, or bought the wrong car used.
Anyway, if the holes "fill", then that's got you the same end result as non-drilled discs, right? You're happy...?
It would appear EBC do a replacement 345mm disc for your car that is not drilled (if the pic is accurate!)
https://www.ebcbrakeshop.co.uk/info-brake-parts?ma...
the brakes are stupidly over sized really. 
Ares said:
Noisy??
Pointless? Brakes are one of the few areas that increased performance is surely never pointless?
300mm discs would still be able to overpower the tyres so the only advantage to 345mm is when the daily commute includes the odd alpine pass and you need them to stand up to repeated heavy braking. Meanwhile you have to live with the extra weight every day and extra costs to replace when the time comes. Pointless? Brakes are one of the few areas that increased performance is surely never pointless?
jagnet said:
Ares said:
Noisy??
Pointless? Brakes are one of the few areas that increased performance is surely never pointless?
300mm discs would still be able to overpower the tyres so the only advantage to 345mm is when the daily commute includes the odd alpine pass and you need them to stand up to repeated heavy braking. Meanwhile you have to live with the extra weight every day and extra costs to replace when the time comes. Pointless? Brakes are one of the few areas that increased performance is surely never pointless?
te.And I still say too much braking power/performance can never be a bad thing.
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