Mismatched front and rear tires...is it bad?
 

I am(was) on 4 Michelin PSS tires but blew 1 front tire over a pothole.

Rear has about 4/32 left so probably good for another season.
I have 2 spare Continental DW front tires (5/32") so I am wondering if it is okay to replace the 2 front with the Conti DW and leave the Michelin PSS tire at the rear. (Probably get 4 new set next season)
All the tires are OEM spec. (225/40, 255/35, r18)

Just a commuting car for now so don't care much about perfect handling, as long as everything is safe.

Edit: RWD btw

you'll understeer at the limit compared to pss all around.

up to you

That time I was pushing it around a freeway onramp in the rain and realized I was going 10 km/h faster than my usual pace, dropped the throttle for some oversteer fun, and remembered too late that I only replaced the front tires.

The wear on both the front and rear will be quite even. (5/32 front, 4/32 rear)

I have driven on both tires and I actually thought the traction between the PSS and Conti DW is quite similar, except the DW feels softer and less responsive.

someone else is driving the car for now (she can't even tell the difference between a 320i and 335i engine), so as long as it has 4 wheels and is safe to drive then is okay lol.

As long as there is tread on the tires, for modest street driving, it will be fine.

+1 it's fine

Under most circumstances, you will be fine. Don't do aggressive driving.

Should be fine as long as both rear tires are about the same thread wear and same thread pattern

Just don't push it and you'll be fine.