The speedometer in my MYP reads 2% low vs. GPS. Does anyone know whether the speed is read from the front or the rear wheels? The front tires have a 0.6 inch (15 mm) smaller diameter than the rear tires. I'm wondering if increasing the front tires by 2% to match the size of the rear tires will correct the speedometer error, or do I need to increase the rear diameter even further?
Front Tires: 28.0 inches
Rear Tires: 28.6 inches
Diameter Difference: 2.14%
Front Tires: 28.0 inches
Rear Tires: 28.6 inches
Diameter Difference: 2.14%