Depends on what coilovers, mine is nearly wound as far down on the threads as can go and it's a very sensible height
I can get 2 fingers between my tyre and wheel arch on the front

The rear is also similar in height with just about 2 fingers gap between tyre and wheel arch.

I run a 3" decat and downpipe with a 2.5" catback exhaust and a 2.5" discrete tail pipe and none of it has ever caught on any bumps or anything.