[Miniata]

I'm not aware of anything the dealer can do to fix speedo error due to different sized tires from stock. 1.5% is a pretty tiny percentage anyways, you'll get almost that much difference going from a full tread new tire down to the wear indicators. Also, a lot of cars are off by a small percentage when new.

You can always check your actual speedo error with GPS, and just be aware of real vs indicated speed at various spots on the speedometer.