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Its probably there during satellite outages, like driving in a tunnel. You don't want to get lost under a bridge or in a tunnel?
Yes, as tires wear, the tire diameter changes. If there is an algorithm monitoring mileage, and computing tire diameter changes as the tire wears, you might be off by a few millimeters when driving through that tunnel.
So, reset it.
But, don't worry. Your tire wear doesn't cause the GPS satellites to change orbit just for you. But to be safe, reset it at night and watch the sky. If you see a bunch of satellite rocket thrusters firing, its because you and only you, calibrated the planet.
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Preventive maintenance prevents mechanical problems. Ripe out your owners manual's maintenance schedule and start some common sense intervals for ALL fluids in your vehicle.
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Tire calibration
Linear Mode
