Advance Auto Parts cuts 30% off sitewide with no minimum purchase necessary via coupon code "DOTW37". (A maximum discount of up to $50 applies.) It's extremely rare for AAP to offer a sitewide discount beyond its typical 20% off; it's only the third time we've seen this discount this year. Shipping starts around $9, or spend $75 or more to qualify for free shipping. (In-store pickup is also available on most items.) Some exclusions apply, and sales tax is added where applicable. Note that this coupon can only be used once per account. Deal ends September 22.

Update: Coupon code "DOTW38" cuts $40 off orders of $100 or more.