Member Since: 15 Jan 2020
Location: West Yorks
Posts: 1461
Brake disc screw
Hi
I've changed brakes on many cars and the disc always has a screw. I've just taken the front wheels off and there aren't any screws on the front discs, not checked back yet.
Am I being stupid here, does a D3 not need them? I would like to fit them so a part number would be useful, but tbh ill just be calling tge local indie in the morning g either way.Discovery 4 GS 2009 Auto Stornoway Grey
Discovery 3 s 2005 Auto Bonatti Grey Gone
Discovery 3 SE 2005 Manual Zambezi Silver Gone
Range Rover Sport HSE 2006 Black
Aston Martin DB7 VV
12th Jun 2020 9:42 pm
pwheeldon
Member Since: 15 Jan 2020
Location: West Yorks
Posts: 1461
picture so you kniw it happened
Discovery 4 GS 2009 Auto Stornoway Grey
Discovery 3 s 2005 Auto Bonatti Grey Gone
Discovery 3 SE 2005 Manual Zambezi Silver Gone
Range Rover Sport HSE 2006 Black
Aston Martin DB7 VV
12th Jun 2020 9:43 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4454
Yes it should be there, but not a disaster if it's not. It just keeps the disc in place when the wheel is off, and will have no effect on braking or safety.
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
12th Jun 2020 9:50 pm
highlands
Member Since: 11 Jan 2010
Location: NW Highlands
Posts: 5098
I do put the screws back (don't do them up very tight like some previous owners do!) but it's not like the disc coming off is going to be the biggest of your problems if you get to that stage when driving along.Black 05 TDV6 HSE Auto
Grey 05 TDV6 HSE Auto (Gone)
54 TDV6 SE Man (killed by me )
12th Jun 2020 9:52 pm
pwheeldon
Member Since: 15 Jan 2020
Location: West Yorks
Posts: 1461
Thanks guys.
I will put them back for the sake of it. If that screw was all that held the disc on, then I think it'd have to be a 'touch bigger. I just wondered if it helped stop squeeking etc. Either way I'll put some in.Discovery 4 GS 2009 Auto Stornoway Grey
Discovery 3 s 2005 Auto Bonatti Grey Gone
Discovery 3 SE 2005 Manual Zambezi Silver Gone
Range Rover Sport HSE 2006 Black
Aston Martin DB7 VV
12th Jun 2020 10:26 pm
galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
only comes into play with wheel off...other than that wheel nuts keep it secure
12th Jun 2020 11:40 pm
Discoveringcomfort
Member Since: 16 Sep 2015
Location: Berkshire
Posts: 637
As above comments BUT, if you do put it back loose, if the screw head is higher than the disk face it could, if it sits against the wheel face, cause the wheel to be out of true or even come loose causing vibration and dangerous handling.
That said, the dirt pattern suggests that it may be located in a recess in the wheel face?Series 1 V8
Series 2 Hibrid V8
Discovery 3 HSE V8
Not changed discs on the Disco but on every other car I've done it on, the screw is seemingly only of use during assembly as the disc needs deft use of a mallet to get it off after it's been on a while..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
13th Jun 2020 7:12 am
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
The screw also keeps the disc in place when you have the wheels off for service etc. If they move , debris can fall between the disc and hub and when the wheel bolted up again you can get disc run out and DTV develop, with the issues that generates. The replacement discs I have had from Advanced factors include new retaining screws.
13th Jun 2020 9:03 am
JMack
Member Since: 02 Aug 2014
Location: Edinburgh
Posts: 1517
I had to drill one out a few weeks ago. It was that tight the Torx bit was twisting and slipping out.
I have fitted discs without them before with no ill effects. I'm sure I've had cars that never had screws holding discs on, nor a place for the screw to go.
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