Bob, my car is stock, other than rear tires. But the tires are OEM height also.
Tom, my car never threw any dash lights. They did say that pressing the brake and accelerator could trigger an ABS code and reduce power though, but I got no light for that.
I bought a new OBD2/ABS scan tool on Sunday, will give it a try next time around. But, if the engine requires drive cycles (starts/restarts/miles) to clear the low timing maps, then clearing codes won't really do much. I'll just try my best to avoid getting into the low map range.