Thinner "turned" rotors will be more prone to warpage due to heat, which even in normal driving, is a lot of heat! If you are an aggressive driver, those rotors probably are glowing red hot on occasion.
When your engine overheats, you run the risk of warping your head(s), and they are thicker than your rotors. Yet even at overheating temps, the head(s) don't take as much punishment as the rotors absorb when hard braking from high speeds.
Get them replaced NOW!!! Your car is too new to require replacement of the other components you described as suspect.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car