Burrcold

My point is that it's not the ceramic brakes that's the reason for the different tire pressure values. It just so happens that in the US the carbon ceramics are bundled with the speed limiter increase. In Canada, you can get carbon ceramic brakes as a standalone option with the lower 155mph maximum speed (therefore you would follow the lower tire pressure values per the owners manual). Or you can option the increased maximum speed, without carbon ceramics.

Dan99

I don't disagree. I did not realize the option differences between the US and Canada. The manual just uses top speed (155 vs 174), and I associated that with ceramic brakes because that's the only real difference between Dynamic (155mph) and Dynamic Plus (174 mph).

But, I will emphasize that the pressures in the manual are only a starting point, and the best values for your specific car are dictated by the type of tires you have and how aggressively you drive. See post #20 for more detail on this.

scutchins

Do you know what the fix was? I'm at the dealer now.

m444

See other thread...

"I just got a P24D600 EVAP System Pressure Sensor/Switch B code and CEL pop up and then disappear on its own...they replaced the valve... here it is:"

https://www.audiworld.com/forums/aud.../#post25490156

quattro_demon

like @m444 said, dealer replaced the purge valve. It’s a common issue….

scutchins

Thanks! Dealer fixed it, something about an evaporative something or other, or maybe it was that purge valve, sorry that I didn't pay much attention.