Brake pads

[Jerome92]

I assume you did proper burnishing and bed in before going on track. If not, even minor undulations on the disk could create localized hot spots and maybe result in brakedown of the compound? Maybe this could explain the excess deposits but soft pedal is strange indeed.

They suggest to either do 10 stops 100-0kph or to do 3 track laps in which braking normally but from 80% top speed and then let cool down. I did both (well the first one a bit modified, as I don't know where I could do that without getting in an accident ) with several hundred km's of normal driving in between

My only theory here would be much better heat transmission through the backing plate heating the single piston more effectively resulting in overheating the brake fluid.

Could be, but pretty sure the fluid is ok, it was freshly flushed and I use RBF 660, never seen any bubbles except after an entire year or one particular occasion in which the bleeding nipple was slightly leaking

I am thinking of getting some anti noise backing pads sold separately by mcu or endless and use it with the pad hoping to mitigate heat transfer to the caliper through contact points.

Like this one? https://www.project-mu.co.jp/en/products/other_shim.html Seems a great idea, let us know if you find something that fits

 

[_LAH_]

I don't know how else to explain a soft pedal. Something should give in order to have a soft pedal.

Yes those are the shims. I don't think they have one that would fit my specific backing plate but i can always buy a larger one and cut to shape. Ferodo also have some i believe, their advertisement says theirs have layers specifically designed to block heat transfer (If my memory serves me well). I'm not sure if it was a pad advertisement or a shim.

 

[Namyang]

If the car is under warranty can we mount aftermarket brake pads and not lose warranty?

 

[_LAH_]

If the car is under warranty can we mount aftermarket brake pads and not lose warranty?

It depends i think, in which country the warranty is going to be claimed. Brake pad is a consumable wear and tear item who's life is heavily dependent on driving style so it's not covered under warranty anyway. Unless it catastrophically fails in a way that leaves no doubt that way of driving is not a factor.

Using anything other than the oem pn's could be interpreted as "modification" as well. But in our case, the i20n "tutorial" section in the infotainment is stating track exclusive brake pads should be used when driving on the track.

In some countries doing anything at all outside the authorized dealerships will void warranty, including routine maintenance even if you can provide documentation proving everything was done according to spec. I've heard stories where people were denied totally unrelated system failures (infotainment, door locks, gearbox, you name it) under warranty just because they replaced their own oil and filter and did not pay the dealership (aka stealership).

Meanwhile in countries like USA and Australia it seems to be a non issue. Though that doesn't mean warranty claims are easy there either. Hyundai and vag group has been notoriously terrible at keeping their warranty promises.

P.s. Sorry for the long and slightly out of topic post.

 

[Namyang]

I was more thinking to the entire brake system... maybe some aftermarket brake pads could lock the caliper or do some damage. I was thinking they might deny some other brake related parts warranty if you use non OE parts.

 

[_LAH_]

I was more thinking to the entire brake system... maybe some aftermarket brake pads could lock the caliper or do some damage. I was thinking they might deny some other brake related parts warranty if you use non OE parts.

When it comes to warranty claim denials, they will use anything and everything possible. So yes i believe your argument could be used against. But this could be fought back using the statement in the infotainment. To the best of my knowledge, Hyundai does not offer an oem "track exclusive" pad option for the i20n. Which technically means their statement is actually recommending an aftermarket brake pad.