I honestly can't remember what they are ... Rota gtr D I think ? Speak to Tarmac as I bought them through him  
  
I'm lowered on bilstein b6 shocks and tein springs .  
  
Wheels are 9.5 / 10.5  
  
Tyres 255/285  
  
Offset 20  
  
Quick pic  this morning  
  
 
  
Also note , I've done the spring perch mod to level the back a touch . 
  
Edit - looked on Tarmac Sportz web site . Rota  grids