[AllBlackBimmer]

You should not mix brakes pads...

but if they are of the same compound and have similiar friction/braking force it should be fine...

Having lower friction pads in the front compared to the rear could result in some odd or unsafe braking....

remember, 70% of braking power comes from the FRONT.

i would NOT ever mix compounds of pads - i.e. semi metallic and cemeric pads... the different compounds heat up differently and obviously have different fricition levels more often than not.

long story short, unless you have a REALLY good reason, there is NO reason to ever mix pads.

I just replaced my rear brakes and was going to go with stoptech pads in the rear while keeping OE in the front, i ended up going for OE pads in the rear instead of stoptech for a few reasons, but mixing pads was one of the,.