Why are my discs warping?

[falkster]

My workhorse is a 2006 C class avantgarde se with the sport pack (only gave the full Sunday name as its got the 330mm drilled discs as standard).
I've had the car 18 months, done roughly 40k in it and I've replaced the discs once and had a set skimmed too but they are now ready for doing again.
I bought Pagid discs and pads so thought the quality would be pretty good - I don't understand why they're constantly warping. I drive like I'm driving miss daisy, I do 100 miles a day all on the motorway and rarely use my brakes. I push it into N when at the lights but still the warping occurs.
Any ideas?

[falkster]

mk2 24v said:

You put it in N, but do you sit there with your foot on the brake still?
usually the main cause of disc warp in my experience

Unless I absolutely have to I just sit without the brake applied.

[falkster]

Mr2Mike said:

lanan said:

^ What he says. Discs don't warp, common misconception.

Discs certainly can and do warp, but the majority of brake judder problems are caused by other issues such as uneven pad transfer.

Id agree if I hadn't replaced all the suspension arms, shocks and wheel bearings in the search for the most enjoyable silent drive to work.
I think I'll try a different type of disc, I chose pagid because they've always been good - might try textar