Lotus Evora - brake pad rattles (not suspension) - LotusTalk - The Lotus Cars Community
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 02-15-2013, 12:35 AM Thread Starter
Registered User
 
hifiandmtb's Avatar
 
Join Date: Feb 2011
Location: RNP, Sydney
Posts: 359
Lotus Evora - brake pad rattles (not suspension)

Here I was trying to track down a subtle rattle from the right-front over the last few months, thinking it was suspension-related.

Coarse surfaces, sharp-edge bumps - rattle, rattle. Bloody annoying!

And today, I realised that light braking almost eliminates the noise. What a numpty


It's coming apart tomorrow to see what's up with it.

ex- 2010 Lotus Evora Starlight Black 6-speed manual
hifiandmtb is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 02-15-2013, 08:26 AM
Registered User
 
Ron Avery's Avatar
 
Join Date: Jul 2005
Location: Winnetka California
Posts: 1,227
Garage
Quote:
Originally Posted by hifiandmtb View Post
Here I was trying to track down a subtle rattle from the right-front over the last few months, thinking it was suspension-related.

Coarse surfaces, sharp-edge bumps - rattle, rattle. Bloody annoying!

And today, I realised that light braking almost eliminates the noise. What a numpty

Evora Brake Pad Rattle - YouTube

It's coming apart tomorrow to see what's up with it.
Well that is not good. I hope you find out what that is.
Ron

Ron Avery
Winnetka Ca
2005 Lotus Elise
2011 Lotus Evora 2+0
Ron Avery is offline  
post #3 of 8 (permalink) Old 02-16-2013, 05:58 PM
Registered User
 
Bobsy Racer's Avatar
 
Join Date: Apr 2010
Location: San Diego, CA
Posts: 799
Quote:
Originally Posted by hifiandmtb View Post
Here I was trying to track down a subtle rattle from the right-front over the last few months, thinking it was suspension-related.

Coarse surfaces, sharp-edge bumps - rattle, rattle. Bloody annoying!

And today, I realised that light braking almost eliminates the noise. What a numpty

Evora Brake Pad Rattle - YouTube

It's coming apart tomorrow to see what's up with it.
Brake pad rattle can be caused by several things:

1. Knock Back, from a warped or irregular brake rotor/disc, that bumps the pads back as it rotates. Check your rotor run out with a dial indicator, and if it is over .005"-.010", turn or replace the rotors.

2. Suck Back, from sticking seals on the caliper pistons. With the car sitting still, push the brake pedal and release it, then check if the pads still rattle. The cure is greasing the piston seals with caliper specific seal grease.

3. Pad taper, caused by the caliper flexing open under extreme pressure and heat conditions, usually associated with track use. The pads will be worn at the heals, near the outer diameter, and will rattle more there, and little at the edge near the center hub. The solution is to replace the pads, or sand them to even thickness all across the pad surface if they are not too worn. Then, get more air to the discs, and consider changing to a higher heat rated pad.
Bobsy Racer is offline  
post #4 of 8 (permalink) Old 02-16-2013, 11:55 PM Thread Starter
Registered User
 
hifiandmtb's Avatar
 
Join Date: Feb 2011
Location: RNP, Sydney
Posts: 359
You forgot broken anti-rattle springs.

I think that's more likely to be the issue. I've decided not to fix this myself & let the dealership sort it out. I know I'm not the only one out there with ridiculously annoying suspension rattles. I want them to see this issue for themselves & work out how to fix it for everyone.

ex- 2010 Lotus Evora Starlight Black 6-speed manual
hifiandmtb is offline  
post #5 of 8 (permalink) Old 02-24-2013, 01:57 AM Thread Starter
Registered User
 
hifiandmtb's Avatar
 
Join Date: Feb 2011
Location: RNP, Sydney
Posts: 359
Car back from the dealership - was a snapped anti-rattle spring. But as they didn't have one in stock & knew I needed the car back that day, they used that goo to stick the pad to the piston.

Rattle fixed, suspension properly quiet now. Thank goodness!

ex- 2010 Lotus Evora Starlight Black 6-speed manual
hifiandmtb is offline  
post #6 of 8 (permalink) Old 02-24-2013, 07:18 AM
Registered User
 
David Craig's Avatar
 
Join Date: Jun 2009
Location: Toronto
Posts: 2,115
Is the broken spring something that one could see with the wheel off?

2009 Saffron Elise
1986 Toyota Tercel - RIP Oct 20/2012
David Craig is offline  
post #7 of 8 (permalink) Old 02-25-2013, 02:25 AM Thread Starter
Registered User
 
hifiandmtb's Avatar
 
Join Date: Feb 2011
Location: RNP, Sydney
Posts: 359
Dunno - possibly!

But as per my video, you should *not* be able to rattle the pad like that ;-)

ex- 2010 Lotus Evora Starlight Black 6-speed manual
hifiandmtb is offline  
post #8 of 8 (permalink) Old 02-25-2013, 07:58 PM
Registered User
 
Bobsy Racer's Avatar
 
Join Date: Apr 2010
Location: San Diego, CA
Posts: 799
Quote:
Originally Posted by David Craig View Post
Is the broken spring something that one could see with the wheel off?
Part # 09 is the "Clip, Anti Rattle".
You should be able to see it at the outer edge of the caliper with the wheel off.
Attached Images
 
Bobsy Racer is offline  
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Lotus Discussions > Lotus Evora

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LotusTalk - The Lotus Cars Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome