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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey
6 Pot Brembos -Pads and measuring discs (thickness) - tips?

Hi team,

Bought a micrometer to measure my discs. It's got a 25mm capacity and been sat in a drawer for a few weeks. Today went to measure and found it won't fit over my discs. Rolling Eyes

Shoulda checked I guess!

Anyone know a fairly accurate way to measure without a micrometer?

Wanted to do it today so ordering a bigger micrometer will take a day or two...

Cheers!

. when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway


Last edited by gonna_go_double_r on 19th Jan 2019 12:37pm. Edited 1 time in total

Post #501291 12th Jan 2019 2:32pm
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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Found it



Now I just need two x one euro coins....

(Method #2 will work, I've got callipers)


. when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway

Post #501292 12th Jan 2019 2:37pm
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Baltic Blue



Member Since: 13 Aug 2015
Location: Oldham
Posts: 1652

United Kingdom 2011 Range Rover Vogue SE TDV8 Baltic Blue

£20 if you have got a local Halfords store ?

Click image to enlarge
 G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.

Post #501293 12th Jan 2019 2:46pm
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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Just to save somebody looking it up, the workshop manual says:

At 4 points around disc, measure disc thickness using a micrometer; renew disc if less than service limit or if variation is exceeded: Disc thickness, NEW 34 mm, Service limit 31 mm. Thickness variation maximum = 0.01 mm

This is for Brembo 6-pot fronts (2011 Workshop Manual). when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway


Last edited by gonna_go_double_r on 12th Jan 2019 4:14pm. Edited 1 time in total

Post #501294 12th Jan 2019 2:46pm
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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Thanks Mike, terrible of Halfords to show that. It's the complete incorrect way to check a disc.

In the video, you may see method #2 where he uses two coins, then subtracts the coins. You need to measure past the lip which every disc will have unless it's brand new.

Also I should have checked the manual before I ordered a micrometer. Banging Head

Yes I have a callipers. Thumbs Up Thumbs Up

. when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway

Post #501295 12th Jan 2019 2:50pm
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rjff



Member Since: 28 Oct 2017
Location: Fenland in Cambridgeshire
Posts: 302

United Kingdom 2011 Range Rover Vogue TDV8 Santorini Black

Try searching for brake disc calipers.

ebay or web brings up plenty.

They have a deep throat style. (don't try searching that with SWMBO looking over your shoulder)

Fairly inexpensive and will let you get closer to the hub. Micrometers for that job are expensive Cheers

Richard
(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
TDV8 Vogue (11MY)
Gap IIDBT (learning but happy to help)


Last edited by rjff on 12th Jan 2019 3:35pm. Edited 1 time in total

Post #501300 12th Jan 2019 3:27pm
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nino_nino



Member Since: 29 Mar 2015
Location: pocitelj
Posts: 547

Bosnia Herzegovina 2012 Range Rover Autobiography Black TDV8 Santorini Black

Greg, I use Vernier calipers and two coins to check thickness. 2012 TDV8 Black Edition
2000 Disco. TD5
1975 series III

Post #501302 12th Jan 2019 3:35pm
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rjff



Member Since: 28 Oct 2017
Location: Fenland in Cambridgeshire
Posts: 302

United Kingdom 2011 Range Rover Vogue TDV8 Santorini Black

I use button magnets instead of coins where they stick, not neccessarily on car discs, helps without having to hold them. Only downside is that they don't give indications of thickness at the bottom of scores on a disc etc. That needs point tips on a suitable micrometer but if they are that bad, then you probably need to do something along the lines of further work. Cheers

Richard
(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
TDV8 Vogue (11MY)
Gap IIDBT (learning but happy to help)

Post #501305 12th Jan 2019 3:56pm
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Baltic Blue



Member Since: 13 Aug 2015
Location: Oldham
Posts: 1652

United Kingdom 2011 Range Rover Vogue SE TDV8 Baltic Blue

You could check the rears instead Greg, assuming it’s not raining down there, like it is up here. Rolling with laughter
New 20mm
Service Limit 18 mm.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.

Post #501306 12th Jan 2019 3:58pm
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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Thanks guys.

Just started raining here but managed to get the wheel back on as it started.

Just did it using the coins method.... A bit of a balancing act.

So I LOVE this idea:

Quote:
button magnets instead of coins


Thank you rjff

An instructor-level mechanic taught me to use micrometer. But I didn't know you could get brake disc callipers, will have a look.

Results: NS measures 33.2mm (was also taught to measure NS, prizes for guessing why)

Needs pads but discs not too bad at 33% allowable wear.

Regarding pad vs rotor wear - My discs and pads were both done around two years ago before I bought it. Based on the 33.2mm measurement today, I'd say I could get another set of pads use, then replace both next time. Making it a sort of 2 to 1 pad to disc wear ratio if that makes sense. Is this typical?


What's the consensus guys, shall I leave the discs?


. when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway

Post #501311 12th Jan 2019 4:18pm
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rjff



Member Since: 28 Oct 2017
Location: Fenland in Cambridgeshire
Posts: 302

United Kingdom 2011 Range Rover Vogue TDV8 Santorini Black

Greg

Glad you like the idea. If you search for calipers, try brake disc vernier calipers. Cheers

Richard
(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
TDV8 Vogue (11MY)
Gap IIDBT (learning but happy to help)

Post #501372 12th Jan 2019 10:37pm
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kds2



Member Since: 30 Sep 2017
Location: lincoln
Posts: 81

England 2003 Range Rover Vogue Td6 Adriatic Blue

Had digital vernier calipers for less than £10 in Lidl of late, plenty good enough for checking discs.

Post #501375 12th Jan 2019 11:54pm
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m@ttsFF



Member Since: 12 Dec 2017
Location: Surrey
Posts: 194

United Kingdom 

I’d leave the discs until next pad change 4.2 SC

Post #501389 13th Jan 2019 10:32am
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nino_nino



Member Since: 29 Mar 2015
Location: pocitelj
Posts: 547

Bosnia Herzegovina 2012 Range Rover Autobiography Black TDV8 Santorini Black

is there good machine shop in your neighborhood, Greg ? 2012 TDV8 Black Edition
2000 Disco. TD5
1975 series III

Post #501398 13th Jan 2019 11:56am
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gonna_go_double_r



Member Since: 26 Nov 2016
Location: London
Posts: 1870

United Kingdom 2011 Range Rover Vogue SE TDV8 Stornoway Grey

Why's that Nino?
. when I joined I was gonna_double_r,
now I've well and truly 'gone' double r:
2011 Vogue SE 4.4 with lots of toys in Stornaway

Post #501402 13th Jan 2019 12:19pm
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