Ferrari FF rear brake pad minimum thickness

[enzoenzo]

Does anyone know what the minimum thickness is for FF rear pads. It was noted this week that my 'rear pads are getting low". The brake pad warning light is not on and I thought that I'd measure the thickness myself.

The lowest reading was 5mm. Does anyone know at what thickness the brake wear warning is triggered? I'm not sure if I have 1,000 miles or 10,000 miles of wear left.

Many thanks

Enzo

[ANOpax]

enzoenzo said:

Does anyone know what the minimum thickness is for FF rear pads. It was noted this week that my 'rear pads are getting low". The brake pad warning light is not on and I thought that I'd measure the thickness myself.

The lowest reading was 5mm. Does anyone know at what thickness the brake wear warning is triggered? I'm not sure if I have 1,000 miles or 10,000 miles of wear left.

Many thanks

Enzo

Did you measure the pads on both sides of the caliper? I’ve been told that the inner pad wears faster than the outer.

[enzoenzo]

Thanks for asking. Yes, I measured all 4. The lowest (5mm) was actually an outside pad.

[ANOpax]

enzoenzo said:

Thanks for asking. Yes, I measured all 4. The lowest (5mm) was actually an outside pad.

Well, I was obviously conned as I was persuaded (by a Ferrari dealer) to change the rear pads even though the pad light wasn’t lit because I was told that the inner pads wear faster but the sensor is on the outer pad.

[belfry]

Do you recall what they charged you for the rear brake pad replacement?

[akadk]

5mm is 50%

Is it recommended to change around 50% to avoid excess heat being put into the discs

[anonymous-user]

Change them when the light comes on. Otherwise what's the point in the light?

[enzoenzo]

akadk said:

5mm is 50%

Is it recommended to change around 50% to avoid excess heat being put into the discs

pocketspring said:

Change them when the light comes on. Otherwise what's the point in the light?

That's my point exactly. Should we change our pads at 50% for street use (not track work)? The dealer will suggest changing the pads as thet show signs of wear.

I'm confused about this. On other cars I have relied on the fact that manufacturers use a brake wear indicator which comes on when we have approx. 1,000 miles of normal wear left.

[akadk]

Wait til the light then

Discs aren’t cheap

1.6mm is the legal limit for tyres as well right. Do you wait til then also ?

[anonymous-user]

akadk said:

Wait til the light then

Discs aren’t cheap

1.6mm is the legal limit for tyres as well right. Do you wait til then also ?

You change your tyres at 50% tread? After all, tyres aren't cheap.

[enzoenzo]

In a quiet hour this afternoon, I decided to take a closer look at the lowest rear pad.

[21ATS]

Mine (rears) were noted at 4mm this week after a service, I was told to keep an eye on them but they don't need changing yet. (Jardine Sevenoaks who I find very easy to deal with).

Where does the "change at 50% wear" whisper come from? Someone with a vested interest no doubt.

Assuming they are 10mm thick new, some fag packet maths suggests I'm doing a little over 5000 miles per mm of pad. Assuming these are the originals.

32,000 miles on my car - 4mm remaining on my rear pads.

Edited by 21ATS on Saturday 9th September 20:29

[21ATS]

akadk said:

Wait til the light then

Discs aren’t cheap

1.6mm is the legal limit for tyres as well right. Do you wait til then also ?

I did ask if my discs were ok and they said it was just the pads being flagged. The pads appear to be more sacrificial than the discs, thankfully!

[ANOpax]

belfry said:

Do you recall what they charged you for the rear brake pad replacement?

Roughly £1,000 IIRC.

[21ATS]

Notes from my recent service.

[enzoenzo]

This worrying tech article from Aldous Voice seems to show that if we wait for the brake pad wear warning light to come on, then it's probably too late to avoid damage to our very expensive carbon disks.

https://aldousvoice.com/2018/06/14/ferrari-ccm-bra...

[ANOpax]

enzoenzo said:

In a quiet hour this afternoon, I decided to take a closer look at the lowest rear pad.

Looks like the brass studs are already showing through as per the Aldous Voice blog post.

Time to change.

[ANOpax]

21ATS said:

Mine (rears) were noted at 4mm this week after a service, I was told to keep an eye on them but they don't need changing yet. (Jardine Sevenoaks who I find very easy to deal with).

Where does the "change at 50% wear" whisper come from? Someone with a vested interest no doubt.

Assuming they are 10mm thick new, some fag packet maths suggests I'm doing a little over 5000 miles per mm of pad. Assuming these are the originals.

32,000 miles on my car - 4mm remaining on my rear pads.

Edited by 21ATS on Saturday 9th September 20:29

32k miles per set of pads sounds about right as I believe the recommendation is to change the discs every 3 sets of pads which puts you on course to change the discs at 96k miles which is ahead of Ferrari’s claimed disc life of 80k miles.

[21ATS]

2000 miles on from my service last month at a 4mm measurement and the pad warning light came on this morning.

New pads being fitted on Wednesday at KHPC in Maidstone.

So 34,000 miles and about 3mm to 4mm is the limit it seems.

£750 ish plus fitting and VAT.

Edited by 21ATS on Monday 16th October 14:10