I searched and read all the topics but couldn't find my answer, hopefully this will help other as well. I wanted to use HR 15mm front spacer to push out my oem 16/17 rims, I have the HR 25mm on the rear, can I use the HR 15mm integral stud spacer and just put wheels on like the 25mm or I have to get the HR 15mm hubcentric front spacer and have the mechanic put longer studs on my rotor. I just want the easiest route hopefully the integral stud will work and stud long enough to pot wheel on like the 25mm