Is it better to have a lower body weight or a lower body fat percent before a tummy tuck to get the best results?

Dear Dynamic247171,
generally speaking, you want to reach your goal weight before you consider a tummy tuck, otherwise your results will be suboptimal if you continue to lose weight after the surgery. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

Hello,
The easiest way to answer this is that you should be at whatever body fat and lean muscle mass you plan to maintain going forward. In my opinion, it is a bad idea for anyone to try to change their body fat percentage or lean mass percentage prior to surgery, hoping to get a better result if they think this will change.
If someone has body contouring surgery, the surgeon is attempting to achieve the best result with the muscle and fat distribution the patient currently has. Once surgery has been performed, gaining or losing fat and gaining or losing muscle can cause changes to the contour creating a sub-optimal result.
You should plan to have surgery once you have hit your goal weight, body fat percentage, and lean muscle percentage.
Hope this helps!
-Dr. Halka