How long are coilovers good for?

[Venom]

I know it's a bit of "how long is a piece of string" question, but how long would one expect a reasonably good set of coilovers to last for? Something like BCs.

I have just under 100k on the e36 with original shocks/springs and they still feel tight and up for another few k. With average usage would you get 30-50k out of the coilovers? Or not even?

I'd say more. I have JOM's in and I live in the sticks and on shit roads and they are still going strong. I do heavy mileage every week, will hit 180,000 this week or next and I think I put them in at 140,000 maybe.