I am looking at decreasing my freeway rpm in 5th gear at 65-70 mph to some sort of comfortable level under 3000. The only way I thought of was going with a 15" wheel and a tall thin tire to increase the rolling distance. Has anyone else done this?
I figured I would make a few improvements to the power output of the engine to make up for the loss of power in 5th and hopefully increase the mpg while at it. And I also would find away to make the spedo correct.