I've inspected it over the weekend and they all look fine to me, but i've read manufacturers have recently used rubber hoses that, although may be worn internally, might still look "ok" visually.

I've never had problems with brake fade, but do feel a bit of mushiness every now and then.

Would it be reasonable to replace the lines at this point? Does anyone know what the expected lifespan of the stock lines are?

Thanks.

 

^^ I was wondering the same. I've got 180k on the clock and the brake pedal feels mushy sometimes. Btw, how many miles you've got on your max?