I religiously zero my 4iiiis before every ride, inside or outside, and the zero offset has never changed. (That’s a really handy feature that TrainerRoad has, so if things start to drift, you have a way of knowing.)
I religiously zero my 4iiiis before every ride, inside or outside, and the zero offset has never changed. (That’s a really handy feature that TrainerRoad has, so if things start to drift, you have a way of knowing.)