Just wondering...........if you change out the wheels from 18" to 19", will you need a speedo recalibration?
No speedo recalibration is required as long as you use the appropriate lower profile tires on the 19 in wheels. Then the tire outside diameter is almost exactly the same.
2011 GT Coupe - candy red, auto, all the options
Mods - Roush supercharger, FRPP Sport axle-back mufflers, Forgestar CF5 gloss black staggered wheels