Reading the thread on loaning a bike many forum members mentioned loaning of their bikes but not allowing the person to make any adjustments. Aren't all our bikes "custom" fit to ourselves?

When do you consider getting your bike refitted or are you married to the fit you have now? I know now with the weight I've lost I should be my bike refitted. I don't have the "gut" I once did and I can bend forward more easily which changes my riding position.

Some aspects of fit won't change with weight loss - like saddle height (assuming it was at the proper height before, anyway), saddle fore/aft position, cleat position, etc. You may find with your increased ability to "bend" that you want a lower and possibly even longer stem, but that's about all I can think of that might change significantly.

It really depends. If you are comfortable where things are then don't change. Though remember as we age some things might need to change to keep the same comfort level. Also like the other poster mentioned as our fitness level improves some adjustments might be necessary as well.

I've read that tall people should have their cleats placed back a bit, behind the balls of their feet. I tried this with a pair of my shoes and it was pure pain, but then I did the same thing by accident with another pair, and got it right. Anyway, when you move the cleats around, the seat position should change, too, and there are a lot of other variables about having a bike fit that are paired up like that. Some of them might ultimately be tied to weight and flexibility.

I would consider getting fitted again ... are there other reasons you're wondering about this? Is the bike uncomfortable now?

As you lose weight, increase fitness and strength, maybe change your riding style (longer distances), there are many aspects of your fit which can change. It may not even be drastic switches, but rather just some tweaks you can make for yourself. Saddle angle, cleat placement, bar height/reach... all these are pretty easy to adjust.
Just remember to mark where things are before you start farting around with it, so you can always go back to the original position.

I think it's actually common for saddle height to change with weight loss. Not sure if it's increased flexibility or perhaps more likely decreased padding between the saddle and the sit bones. I think I've probably moved mine up close to 3 cm over the course of 2 years.

I could see that happening with increases in fitness - especially flexibility and muscle tone (particularly the hamstrings), but I have a hard time understanding how weight loss alone would affect it. I could well be wrong, but it just doesn't track to my pea brain. If your leg extension is correct at your current (new) height, then flexibility/muscle tone issues aside, it was probably too low before. At least that's how it would seem to me.

I ride with my fitter, so no pretty sure it has always fit right. I have less tissue between my sit bones and the saddle than I used to have.. same as subtracting padding / height from the seat.

I feel more tightness in the arms and shoulders than I use to feel. As mentioned it maybe due to doing longer distances. i've noticed on some longer rides I notice things I didn't on shorter rides. I have some discomfort with my left hamstring. I think this is from "overuse" starting out on longer rides without a build up. I only notice this when riding hard, the pain is right at the edge of the seat.

thanks for the input so far.