Ahhh... I think I see the issue here. There's no carClass mapping at all for the RF2 Indycar, so the app assumes it's an 'unknown race car' and will give it iron race brakes with much lower operating temps. Like my esteemed friend said above, the fix here is to add the correct rf2ClassNames line, which means the app will use 'carbon' brake temp thresholds which are much much higher