I'm doing a track day on Monday at Mallala in SA.
I'm looking for advice on what tyre pressures are recommended for the track.
My SW20 is totally stock, with standard 15x6 & 15x7 wheels and 195 & 225/50 tyres.
Any help is appreciated.

More important is the type of tyres, what are you running?

I've got Falken ZE912 tyre's. Its hard to get much in stock sizes these days. They have to do until i can afford new 17" wheels.

just run 300kpa

The day will be hard on your tyres and if you are pushing hard you could easily kill a set at a track day, particularly if the tread is new and deep. Keep the pressures up. Try 35/40 F/R as a start - set cold before you leave home. Check again after 5-10 laps and see what the pressures have come up by. More than 4-5 psi increase hot and you may be a little low. If it rises by less than 4psi you are a little high.
To save the tyres stay a little high on the pressures- it may not be the fastest lap time but it will save the tyres and also make the handling a little more predictable.
If you have got time to get a wheel alignment before the track day, add some negative camber - saves the outside edge of the tyres and helps the car turn in.
Avoid really long sessions where the tyres overheat - do 5 to 10 laps then let the car cool down - saves the car a bit too.
Smashing out 30 laps at maximum effort will kill a standard road car.

Pete.

Thanks guys. They will be 10-15 min sessions....6-8 laps with a 40-45 min break between sessions. This will be my first time on the track, so I'll be learning as i go. I'm planning on starting slow and building my confidence and my speed.

I just did my first track day at queensland raceway with 15x6 15x7 +45 offset stock 5 star rims with 205 50 15 / 225 50 15 kumho ecsta's / bridgestone grid III's (old tyres). Started running 40 psi front and back. Just got a wheel alignment done and balance done and thats what they set the tyres to.
Car handled really taily initially but once up to temp and after a few laps and getting to know the track ended up running 32psi 34psi front to back. Was very predictable. Hope this helps!

Was the 32 & 34 psi hot or cold pressure?

I've used those tyres before. If you have plenty of negative camber and stiffer suspension, you can get away with lower pressures.

For a stock standard car I'd use something like 38 psi front, 40 psi rear (hot). Start out with 35, 37 cold and drop them back down to 38, 40 as they heat up after each session. Keep an eye on the outside shoulders. If they're getting smashed, add another 2 psi and check again. But with standard suspension the shoulders are always going to cop it a bit more. If the shoulders are doing ok you can drop one or two psi out to try and get some more grip.

Do your pressure checks and adjustments as soon as you come in from a session while they are still hot!

You can play around with the pressures a bit to alter the handling but if it's your first track day I wouldn't bother. Better off just getting a feel for the car and learning it rather than changing it every session.

Thanks Adrian.