1989 Camaro RS - V8 TBI - Speedometer and Tachometer both reading substantially high.. factory size tires on the car.. suggestions?
My Camaro Speedo and Tach both are reading significantly higher than the actual speed.. (IE: at 65 mph I am actually going around 50-52mp)
I have the normal sized wheels and tires on the car - 205/65/r15
No clue why it would be doing this.. any ideas?