Fast Lane Only on MSN

Your speedometer is lying, but is GPS accuracy actually any better?

Modern cars surround drivers with digital certainty, yet one of the most basic numbers on the dashboard is quietly biased in ...
Reading Eagle

Under the Hood: What’s wrong with a speedometer that gives me different readings?

Question: I’m having a problem with intermittent reading on the speedometer of my 2000 Nissan Frontier. Sometimes it reads correctly or jumps around to different readings, or gives me no reading.
La Crosse Tribune

Does tire pressure affect speedometer or odometer readings?

Yes, but just a bit. A car measures the rotations of the axle and wheel. The speed is the distance traveled per hour (speedometer reading). The distance traveled (odometer reading) is rotations ...
Arizona Daily Star

Speedometers' highest numbers often exceed the cars' capabilities

DETROIT - The speedometer on the Toyota Yaris says the tiny car can go 140 miles per hour. In reality, the bulbous subcompact's 106-horsepower engine and automatic transmission can't push it any ...
CCJ

Speedometer recalibration

Swapping out factory rubber for taller (or shorter) tires affects trucks’ speed-sensor circuits, which can lead to errors in the speedometer readings and everything related to mileage figures from ...
Hot Rod

Calibrate That Speedo

Auto Meter's 170 series speedometer is available in three mph ranges: 120, 160 and 200 mph. These electric meters feature a built-in calibration screw, permitting easy adjustment of the needle. This ...