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Try this code MISSU132 on advance auto site for $50 off $100, $30 off $80 and $10 off $30. If you want front and rear place two orders to save more
"The promotion code you have entered is not available at this time. Please try again later."
I checked it right before I posted, you must have waited to long.
You can usually find a 30% off code.
was the coupon posted somewhere in particular? where did you see it? maybe it's region-specific. I can't think of why a code would invalidate in the middle of a day. Ususally it applies to EOD or something along those lines.