On the web page, you should look for a "REDEEM COUPON" toolbar on the left hand side. Click on it and it will then ask for your coupon number. It shouldn't ask for your cc,unless things changed the last time I was there(like two days ago). Got four new tires for $100 off:) Thanks Eurospeed!! Good Luck bao328i Hi, I noticed the posting of carparts.com coupons, and i've tried ordering something.. and it's asking for my creditcard, but i dont wanna pay for that, i want the $50 off... so how do i use the coupon!?