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I have 285 /70-17 on my 04 150. Local dealer could not cal my speedo.The tech said it kicked him out of the program when he treid to do the cal.He said my tires are to tall. Any idea's. Thanks
This may, or may not, help. I have the same size tires. If you have a tuner, like superchips, you can program your truck's computer for that bigger size. On a 417 mile trip this past summer, I had only a 4 mile difference in my odometer reading of my truck and my GPS.