what kind of preasure should i be running on my kit, i have yoko a048 195 50 r15 front and 225 50 r15 at the rear live axle??

16~18psi

im running 16-18psi too

its important to measure when the tyres are hot, especially if on track, i was at a trackday on saturday and 18psi in cold tyres was soon 23 psi after a few laps.

Just out of interest, what width are your wheels on the back?

I have mine at 21 PSI all round (195/50/15). On the track I found the more pressure I had, the more stable the car in long, high speed corners.

there 15x8 at the back i had them custom made with a zero ofset to fit the archs, look wicked as i hate seeing kit cars with skinny wheels and ditch finder tyres!!!