I Just finished a re-gear and tire size upgrade and my speedo was now off by about 10% I installed a calibration module from Hypertech and it was a quick fix: Speedometer Correction After Re-gear | My Toyota FJ Cruiser
Speedo Recalibration
- Thread starter DaToy
- Start date
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sounds cool, but YIKES $200, I'll keep my math skills sharp and learn to offset my speed 6% (34" tires).
Same here, just 10% with 35's...
I just use my Scanguage and I rarely ever look at my speedo. Its become a habit now.