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

Beleave it or not the slicks and the street tires are on alu rims.

The street tires are on a set of turbine or fined rims that came on a old ford like a thunder bird. had to grind the center out so that they would fit on my axles.

If i had the money i would go by some nice light weight rims and some real sticky d.o.t tires........So have to make do with what i have kicking around.
My bad, i assumed steel wheels, lol. My steel 8x15 steels, with t/a radials, are almost thirty pounds apiece more than my slicks on autodrags.
You could look at it as a challenge, learning to race on street tires.