Lower E.t with a taller tire?

60 ft. went from 1.48 to consistant 1.42s. so contact patch and maybe tire compound a better match for my set up. Shift at 6600 go through 1/8 at 6100 coming on strong. Cant see it helping a 15 sec. car unless your running a stock type motor with to low of gears in the rear. Traction shouldn't be a problem on a 15 sec. car.