I've looked, but can't for the life of me see any way to increase the standard 2 laps in Arcade Mode. Is there any way at all to change it? It's getting annoying only having 2 laps to do
Exactly.
But if you turn off the option to have other cars on track (if you want to do a time attack in Fuji, Tsukuka and NY) you can only have 2 laps, which is a shame actually.