Brake disc wear

[will-w]

Evening all

I’ve just been having a nose around the car and noticed that the front discs looked a bit lippy. Now I don’t remember them being this obviously worn when I looked last, but that was probably 1200 miles ago when I bought the car.

I must admit I had thought that the brakes had been a little soft the last time I drove the car.

How long should a set of discs last up front? They are the originals, so 15k miles/9 years old.

Thanks,
Will

 

[CatmanV2]

I'd just measure them unless the pads are down.

C

 

[will-w]

I'd just measure them unless the pads are down.

C

Loads of pad left, certainly on the outside anyway.

I don’t have anything to measure them with, guess I’ll need to invest

 

[CatmanV2]

Loads of pad left, certainly on the outside anyway.

I don’t have anything to measure them with, guess I’ll need to invest

https://www.amazon.co.uk/AUTOUTLET-Electronic-Micrometer-Calipers-Measuring/dp/B081CN4TLY/ref=sr_1_6?keywords=micrometer+digital&qid=1666457818&qu=eyJxc2MiOiI0LjY5IiwicXNhIjoiNC4zNiIsInFzcCI6IjQuMjMifQ%3D%3D&sprefix=micrometer%2Caps%2C82&sr=8-6

Should do fine with a sufficient degree of accuracy. Sure someone will correct me if I'm wrong.

TBH even if the discs were close to minimum I'd wait until the pads are done.

C

 

[will-w]

I’ve got a set of Vernier callipers in the garage but they’re flat sided.. I’m sure I can get creative and modify them accordingly.

Also need to find the minimum thickness measurement from somewhere

 

[Gazcw]

I’ve got a set of Vernier callipers in the garage but they’re flat sided.. I’m sure I can get creative and modify them accordingly.

Also need to find the minimum thickness measurement from somewhere

Put a spacer on either side of the disc measure with vernier and then measure the spacers and minus from first figure OR buy new measuring sticks. MORE TOOLS......

 

[Zep]

You should be able to get a set of vernier calipers in there at a slight angle, just make sure the cut out in the legs clears the lip. Standard thickness is 32mm with 30mm being the minimum thickness. I’d say your pads were about half worn which is about right for 15k miles.

 

[midlifecrisis]

@will-w My discs are similarly 'lippy' but clearly good enough for the MOT (last Tuesday!). Braking performance isn't compromised and mine has done 57k miles in 10 years (ready for the scrapper!).

 

[CatmanV2]

You should be able to get a set of vernier calipers in there at a slight angle, just make sure the cut out in the legs clears the lip. Standard thickness is 32mm with 30mm being the minimum thickness. I’d say your pads were about half worn which is about right for 15k miles.

Stamped on the edge, normally, is it not?

I’ve got a set of Vernier callipers in the garage but they’re flat sided.. I’m sure I can get creative and modify them accordingly.

Also need to find the minimum thickness measurement from somewhere

See above

C

 

[Zep]

Stamped on the edge, normally, is it not?

C

Yes, and you can read it when they are new.

 

[CatmanV2]

Yes, and you can read it when they are new.

Yeah, I wondered about that while posting. But there was malt

C

 

[Gazcw]

@will-w My discs are similarly 'lippy' but clearly good enough for the MOT (last Tuesday!). Braking performance isn't compromised and mine has done 57k miles in 10 years (ready for the scrapper!).

Mine are lovely and smooth on 63k miles.

 

[midlifecrisis]

Mine are lovely and smooth on 63k miles.

As smooth as my bathroom tiles? They're ceramic too...

 

[Bebs]

@will-w My discs are similarly 'lippy' but clearly good enough for the MOT (last Tuesday!). Braking performance isn't compromised and mine has done 57k miles in 10 years (ready for the scrapper!).

There’s always that option of bigger ones, when the time comes

 

[Gazcw]

There’s always that option of bigger ones, when the time comes

It's a must not an option.

 

[philw696]

@will-w My discs are similarly 'lippy' but clearly good enough for the MOT (last Tuesday!). Braking performance isn't compromised and mine has done 57k miles in 10 years (ready for the scrapper!).

I know I'm breaking one of the ten commandments here but you're car is beautiful mate absolutely Stunning

 

[midlifecrisis]

I know I'm breaking one of the ten commandments here but you're car is beautiful mate absolutely Stunning

Say a few Hail Mary's and couple more Our Father's and all sins will be forgiven.

Oh and thanks.

 

[Captain Boogaloo]

You need Zep's big disc conversion. It's absolutely transformed my car.
Cheerio
Captain Boogaloo

 

[Gazcw]

I know I'm breaking one of the ten commandments here but you're car is beautiful mate absolutely Stunning

Missed a terrible joke addition there mate. "I'm braking one of the ten"

 

[CatmanV2]

I know I'm breaking one of the ten commandments here but you're car is beautiful mate absolutely Stunning

You're right. It's "your"

C