I PURCHASED THIS BIKE FOR MY GIRLFRIEND AS A BIRTHDAY PRESENT FOR HER DAUGHTER.IT ARRIVED THE DAY BEFORE SO I ASSEMBLED IT THAT NIGHT,WHEN I TOOK IT OUT OF THE BOX IT HAD NUMEROUS CHIPS AND SCRATCHES ALL OVER THE FRAME SOME QUITE DEEP!!!ALSO AFTER PUTTING THE WHEELS ON I NOTICED BOTH DISC BRAKES WERE QUITE BADLY WARPED AND THEY CHAFE AGAINST THE CALIPER'S WHEN THE WHEEL'S GO ROUND!!!THERE IS NO WAY OF STOPPING THIS UNLESS YOU TAKE THE CALIPER'S OFF LEAVING YOU WITH NO BRAKE'S!!!!!I WAS VERY DISSAPOINTED WITH THE QUALITY OF THIS PURCHASE AND WOULD HAVE SENT IT BACK IF MY GIRLFRIEND'S DAUGHTR WOULD LET ME!!!!BUT SHE WANTED IT SO BADLY SHE SAID SHE'D PUT UP WITH IT.I'M GOING TO HAVE TO PURCHASE NEW DISC'S FOR THE BRAKE'S TO STOP THE CHAFING NOISES!!!!MOOR EXPENCE!!!!!! IF IT WASN'T FOR ALL THE DAMAGE IT WOULD'VE BEEN A HALF DECENT BIKE!DOES ANYONE CHECK THE CONDITION OF PRODUCT'S BEFORE THEM BEING SENT OUT???I THINK NOT!!!!!!!!!!!!