Titanium brake shims.

[stevieturbo]

xjay1337 said:

Two words. Audi Ttrs.

But it's ok. Guess I'm naive then :/

I know when a debate is pointless. I'll bow out to your superior knowledge.

Edited by xjay1337 on Monday 22 June 21:29

And the relevance ? zero.

GreenV8S said:

Wear, certainly. But the amount of energy going into the brakes is unchanged and the only differences in temperatures surely are just due to variations in pad conductivity, which are unlikely to vary hugely for the sort of pads in question and in any case would be insignificant compared to variations in pad thickness. I am simply not convinced that pad/disc brand/type combinations are relevant to this problem.

Of course it changes. If you put aggressive pads and whatever discs up front.....the front will be doing more work, far more heat than before where it may have been spread over all 4 corners more evenly.
If you make changes to the suspension, it can affect it too. If you have a different disc material as has already been stated...it will affect it. Depending how long the person uses the brakes for..will matter. Say going from 100-0 over 500 yds vs 200 yds, will undoubtedly generate different levels of heat, and in all 4 corners....but sure, it's the same speed change ?

As others have said, it is a very dynamic system with many variables.

And that's why discs are all different, different designs, materials, different calipers, pads etc etc etc etc etc

It is not anywhere near as simple as some are dreaming it to be

[BogBeast]

Maybe of no help, but I will throw it in...

I had a mysterious brake overheating issue that turned out to be an issue with the brake servo. It seemed to be retaining pressure and holding the pads ever so slightly on. Not so I'd notice but enough to cook the seals with the heat. You probably don't have a servo but It may be worth looking elsewhere in the brake system,

[xjay1337]

I am probably on the limit of my brakes for fade. I use fresh fluid every 6 months (OEM).
I have Pagid RS29 pads.
340mm discs, 4 piston calipers.
And brake ducting.

I certainly do notice some fade towards the end of a longer session.

I've fitted my Ti shims tonight (In the rain, like a proper enthusiast). I'll see how they go, I'm at Donny on Tuesday, having been at Bedford a couple of weeks ago. so I will be able to compare (relatively) back to back.

[The Wookie]

If you’re changing the fluid that regularly you might as well switch to something like Castrol SRF.

It’s more expensive (and to be fair sometimes seems to be as rare as rocking horse st) but it has a higher boiling point and is still Dot 4, so doesn’t need replacement of any seals or any hard work, just a reasonable flush through

Also save your money if you’re doing a full fluid change each time by just blowing out the nasty overheated fluid in the calipers the day after a track day

[xjay1337]

The cost of SRF is astronomical so it will never be going in. It would be a better fluid though - but £££££ ugh.

I use either OEM or Typ200.

I consider myself to go at a reasonable lick on track but I'm still only on road tyres so don't think it's really worthwhile.

If these shims make any improvements at all (and a few friends who have them seem to say they do) then it would be better value (IMO).

Only downside was, I got them from Russia and they took a month to arrive!

Thanks for advice on only bleeding a little. I only tend to use around 300ml at most anyway.

[The Wookie]

Yeah that’s fair enough, it’s not the cheapest stuff.

No worries, always glad to be helpful

[Evoluzione]

I'd take a high quality/boiling point fluid over changing a lesser type every 5 mins any day. You're quibbling over a £45/ltr fluid on an expensive track car? 'Kinell
If you want cheaper then ATE 200 and Motul 660 are good too.
One thing NOT to get caught out with is the internet myth that fluids like React are somehow more hygroscopic and need changing more often, it simply isn't true.

Edited by Evoluzione on Friday 3rd July 23:30

[The Wookie]

Evoluzione said:

I'd take a high quality/boiling point fluid over changing a lesser type every 5 mins any day. You're quibbling over a £45/ltr fluid on an expensive track car? 'Kinell
If you want cheaper then ATE 200 and Motul 660 are good too.
One thing NOT to get caught out with is the internet myth that fluids like React are somehow more hygroscopic and need changing more often, it simply isn't true.

Edited by Evoluzione on Friday 3rd July 23:30

They aren’t more hygroscopic but their boiling point does drop more quickly than regular Dot 4, certainly SRF does anyway. Granted it still stays above regular Dot 4 for a good while.

[xjay1337]

Evoluzione said:

I'd take a high quality/boiling point fluid over changing a lesser type every 5 mins any day. You're quibbling over a £45/ltr fluid on an expensive track car? 'Kinell
If you want cheaper then ATE 200 and Motul 660 are good too.
One thing NOT to get caught out with is the internet myth that fluids like React are somehow more hygroscopic and need changing more often, it simply isn't true.

Edited by Evoluzione on Friday 3rd July 23:30

I already said I'm using ATE Typ200.

I'm reasonably up to speed with Brake fluids. It costs me 30 quid every 6 months to have my mate bleed it through.

I don't have a track car. I have an M135i which is also, at the moment, my daily. No way hosay am I paying 45 quid / L for brake fluid.