Always use Hub Centric type spacers. Otherwise you will experience some vibration possibly, or none at all but still have some stress, & experience a broken stud in the future.

Go with Bora wheel spacers if you want spacers. Quality made, hub centric.

 

I'm using 1.25 inch hub centric wheel spacers. They are 6160 billet aluminum 5 x 135 to mustang 5 x 114.3/ 4.5. No issues. The way the back of the rim hub was made meant I didn't have to trim back the O.E wheel studs. They fit into the grooves of the back side of the rim. Hub centric means they will seat on the raise ring to keep the rim centered to the hub which is what you want.