Picking gears

Street;85" roll-out, 295/50-15s
Track; 87" roll-out, 325/50-15 DRs


Your math won't work for me.
I get 5700=82mph with an 87" roll-out in 1.39 third gear.
I get 5700=114.5 with an 87" roll-out and direct 4th.
I get 5700=110 with an 83.55 roll-out, or 26.6 inch diameter tires.
I get 5700=110 with 90.6" roll-out in third/over (1.084), which is a 28.8" tire