I couldn't find where to put suggestions so I'll leave it here. I been struggling with pit commands for a while now and figured out why, After I say pitstop I always forget to say "change" before saying right tires. And when I do remember to say "change" before my phrase, I useally always say change "four" tires instead of change "all" tires. Maybe it's just me or maybe it's an american thing but I struggle so badly with this in the heat of the moment. It's just habit to say it the way I'm use to, I even have notes wrote down beside me but it's still hard to read in the moment and I still even wrote down "four" instead of "all" in my notes. So this is my suggestions:

"Pitstop four tires" / changes all four tires
"Pitstop right sides" / changes right side tires
"Pitstop left sides" / changes left side tires
"Pitstop no tires" / clears all tire selections
"Pitstop no fuel" / clears fuel refueling