K24R 300mm / 314mm budget rear brake upgrade

[Rusty]

I use the Apec brake catalogue to get a general overview, as it enable searching with a tolerance, and then I use the Brembo brake catalogue to get the technical drawing of the disc that I've identified. HTH

[Rusty]

Right, I've decided on the type of disc. There are 2 sizes available - 280 & 302. Is there any interest in the 280 over the 302? Good news is that Brembo discs are sub £50 in either size for a pair, so the same as OE.

[s2driveruk]

which is the best size for balance on a 323 up front?

[Rusty]

I'd say 302. Current Audis run 321/302 but different calipers obviously.

[Rusty]

Just you and me then David

[Greg_S]

302's would be preference, if you are going to the effort of upgrading the fronts you will want to maximise the rears a bit more

[Rusty]

There's also a 312mm option

[Greg_S]

There's also a 312mm option

Just to make the choice simpler. Guess it comes down to cost for doing on a budget

[Rusty]

Fractionally more and a rarer disc, as its only fitted to 1 car ...

[re2500]

Andy, Ive got 314's up front, would you think the 302 or the 280 would balance best?
I'd be interested, but it does depend on final cost.
Good effort on working all this out btw...

[Error404]

Andy jut musing here, but can you make a bracket that allows for both discs or is the hat height different?

[newsh]

I'd be up for a set of these to go with my 996 front setup Andy

[Rusty]

Having looked in to it, the 280 version of the disc doesn't work well for the bracket design. The 278mm disc I tried had too high a hat height but would have worked without the dust shields or with a small spacer between disc and hub - it was close. If someone wants to try this then I'm more than happy to draw it all up.

The 302 option is looking best. Don't forget that this still uses the small OE S2 rear caliper, so isn't going to set the world on fire, more it will offer a simple and effective method of improving looks and performance by offering greater leverage.

The 314mm rear option uses the same bracket design, just enlarged for the bigger disc but rarity of models it's fitted to make me a little concerned... That said, I'm sorely tempted to give it a go as a testbed, as well as some 16" friendly fronts.

[Rusty]

Forgot to say, the 278mm option will work with 4 stud and there's also a 290mm option that uses a rare but suitable disc, again, also available in 4 stud.

[martinws]

This is something i would also be interested in for my S2 running geared typ85. iv got 314mm 996s up front already but think the rears are a bit on the small side.