Will a tummy tuck cause previous breast implant scars to lower and can they be revised at the time of my tummy tuck? (photos)

The tummy tuck could pull your breast scars down a little more but it would likely be a few MM, not multiple CM.
Are your implants in the proper position? Sometimes capsular contracture can cause the implants to migrate up and the scars then appear low. Something you could correct during the tummy tuck as well.
An exam could help identify what is all going on and what to do first vs doing them at the same time.
You're a great candidate for an abdominoplasty. Make sure to seek out a board certified plastic surgeon to help a discuss your options in person.

Dear Nice728706,
tummy tuck will not affect your previous breast scars. 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