Shuddering under braking

[JRambo]

Hi all, got a Evo 8 with recent new up rated discs and pads and under braking the steering wheel is shuddering. I suspect it's warped discs?
Anyone else experienced this or is there something else it could be?

 

[Marty.H]

When the disks where fitted did you make sure it was nice and clean on the face of the hubs before fitting them ?

If they was clean and you are getting it i would then be looking at warped disks you can get a dial gauge and check the runout on them

 

[Evo4TomB]

What discs were they ??

I bought a set of ebc to get through mot an warped them in 1 week :razz:

Now I'm ordering pf 2pc as had them before an were epic !!!

 

[evoaps]

wheels need to be balanced?

 

[Phil74]

If these were cheap vented discs from ebay they are only evo blanks that machine to add grooves or x-drilled and totally useless as i have changed a lot of these for people in the past not long after fitting them. Surfaces should of been cleaned with brake cleaner and copper grease used on the pads. I have wrapped EBC, Pagid and Mintex Discs before and even welded EBC yellow pads to the disc under heavy braking. I have found Brembo Competition Pads 1334, Ferodo DS2500 a very good pad.

 

[B6lee]

Pad deposits can cause this or poor bedding in. Your supposed to take it real steady on new discs so they heat cycle properly

 

[Phil74]

Pad deposits can cause this or poor bedding in. Your supposed to take it real steady on new discs so they heat cycle properly

+1 same as fitting new clutch

 

[JRambo]

They were newly fitted just before I bought the car. The guy I bought it off didn't do things by half so I would like to assume they are fairly decent discs & pads. What's stumps me is I can take it out one day and she'll shudder then others days and no sign of anything?
Any recommendations on s**t hot discs to get? Will a cheaper pad increase discs temp leading towards a warped disc?

 

[madmilligan]

I had this problem before and after a while dissapeared ? grooved discs can cause this with the air trying to escape if you press harder does it stop?

 

[gooner8]

yep mine does this some time's only on medium braking! If you brake hard its doesn't do it?

 

[gooner8]

so drive faster brake harder see if that help's lol!

 

[steeler]

ive got an Evo X and its shuddering bad now under braking. Someone said i should get a new set of pads and discs for the front. They look ok to me from the outside! seems a bit extreme?!
whats the best thing to do at a reasonable price?