im in the process of getting my speedo correct...
its a 92 lx with aod. so it came from the factory with a 3.27 rear gear.
the rear gear is now a 4.10, and it has 275/60/r15 rear tires(26" tall), same aod.
the speedo is about 10mph fast... ie when the speedo reads 75, im going 65

how can i get this corrected?

thanks

 

Just change the speedo gear. 10MPH is generally about 3 teeth larger.