In Spain our control tyres are :
Maximum 4 pairs for each driven axle
Astro
2wd rear: Schumacher Mini Spike 2
4wd front and rear: Schumacher Mini Spike 2
Indoor (carpet)
2wd rear: Schumacher Mini Pin
4wd front and rear: Schumacher Mini Pin
Dirt (clay)
2wd rear: JConcepts Double Dees
4wd front and rear: JConcepts Double Dees
In regional races is usually free.