How much will adding 16 lb to my car affect ET/mph(rotating weight)

All I can think about in this scenario was wayyyy back when I was towing my old 24ft enclosed with my 95 1500 (wrong tool for the job). Now I was using some LT tires and figured I’d better step up to some E rated rubber. Dropped the pickup off at the tire store and when I picked it up with my new shoes I literally checked to see if the e-brake was on....

i was amazed at the anchor I was pulling with just heavier rubber.