I just read USA today's article about the new RX8. The max RPM for the engine is 9000 RPM (manual transmission) and 7000 RPM for the automatic.
30 grand is very very high. Your turbo might be winding out at 30 to 140 grand, but not your engine. The turbo on my Talon can wind out at up to 150,000 RPM, which is insane.