They aren't magical or anything, but QFM (queensland friction materials is what it stands for iirc) pads are a pretty decent pad for a car that is part street/part circuit.
In particular the a1rm compond, It'd work on shorter circuit racing events (but would almost certainly fade under endurance racing). But the good thing, is that it has a fairly consitent friction vs temperature spread - or in other words, it will 'bite' close to identically when cold and when right up to temp. (traditionally some of the higher performance pads don't work well at all until they were up to optimal temps)

If you do a search on a1rm pads, you'll find a bunch of people on all differnt forums reporting what is almost entirely good feedback (can't recall any negative feedback specifically, but by pure law of averages, there'd have to be some out there that didn't like them).

Obviously if you run them on a braking setup (like a stock 1200 disc setup) on circuit race conditions - they'll work way better than stock (let alone old) 1200 pads, but they will go off with enough stops in quick succession. Point being is they aren't going to make up for a ridiculously under-specced brake combo (and I am not saying you are doing that, you clearly are not, but I'm saying it to try and put context on the capability of these pads) - but they will tend to make the most of them.

I forget exactly their friction co-efficient, but it was somewhere around 0.42 (please don't take that to the bank, it's a vague recollection).

You can certainly get pads with more bite, but it's all relative. Some of the pads that worked on non vented 7.5" mini discs were insane - very high friction - only required light pedal pressure, but they also chewed through the discs - they'd last 2 sets of pads, and the pads didn't last long either :)

So after all that - short version. If it is for moderately short circuit work, or autocross, or just hi-po street with the occasional track day - give QFM a1rm compound pads a try.

If you want something a little less aggressive, their hp-x compound is approximately on par with the old bendix metal king pads.

Oh - one other small point - the qfm pads anecdotally tend to have quite a reduction in brake dust ending up on the wheels

Did the pad fit?

Pm'd

I'm pretty sure there is only one pad for them.

I have some old pads here destined for the bin, pm me your address and I will send one down to see if it fits, if it does and you want my new pads, they're yours, if it doesn't fit it will help you get ones that do.

Well I'm not sure but I think there is two types as as far as I can tell from searching! I'm not sure as they came on the car so I'll have to look at them better, my other problem is I don't even have old pads to match them to :(

So are these sumitomos same as from 240k and the ones I'm using? Fit under 13 inch rims on stanza struts etc?

I have two sets of Sumitoyo twin spots here, one set I have modded to suit vented rotors, the pads I have fit both calipers which look identical to the ones in your photo's.

Is there two different p/no's for Sumi twin spots?

Hey lemonhead which calipers will these suit? As there are two types

I have some new (still in box) DB 625 RB74 compound 'race brakes' pads here I won't be using, cost me $180 plus postage, $150 and I will pay postage.

Ring 'race brakes' and see if the compound is right for you, I have always used RB74 compound in the rally car.

Just let me know.

One more thought, keep the rear drums adjusted up

Also, a brake "bias" valve like Nascar uses might be of assistance..

Just do NOT use a "orifice" type valve as this will restrict the back-flow of brake fluid when you release the brakes.

Rusty Wrench