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If the outside diameter of the new wheel (tire) is smaller then the tire will have to make more revolutions to equal what the manufacturer calibrated the spedometer to. The result would be your vehicle reading higher than actual speed. The solution it to make sure the vehicle is recalibrated to the new diameter. Sometimes this is as simple as a gear change in the transmission (external)

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13y ago

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Will smaller tires show speed is less the actual?

Yes, it is obvious that if the radius of tire is small than it effect on the speed of the car. Smaller tires will show the speed on the speedometer more than actual.


What would cause the speedometer to be off 5 miles an hr if everything is ariginal?

If the speedometer is reading 5 miles per hour faster than the actual speed and everything is original, it could be due to tire size differences. If the tires are not the manufacturer-recommended size, they can affect the accuracy of the speedometer. Additionally, wear and tear on the speedometer gear or issues with the vehicle's speed sensor could also contribute to inaccurate readings. Lastly, variations in the calibration of the speedometer itself may lead to discrepancies.


91 dodge stealth that the speedometer runs way too fast for actual speed tack also but cruise stays at set speed despite speedometer reading?

have you replaced the stock tires with bigger tire you need to have speedo recalibrated thru the computer.take it to a technition


An automobile speedometer is configured to read speed proportional to the rotational speed of its wheels If larger wheels such as snow tires are used will the speedometer reading be high low or no dif?

If larger wheels are used, the speedometer reading will be lower than the actual speed of the vehicle. This is because larger wheels cover more ground with each revolution compared to smaller wheels, resulting in fewer revolutions needed to travel the same distance.


Why would the speedometer on a 1994 Ford Escort LX jump 5-10 MPH after hitting a bump at higher rates of speed as if it is not sensing the actual speed?

The speedometer cable is most likely worn out and needs to be replaced. The tension gears that make the needle move have become stripped over time and the teeth slip in and out of position.


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If a diagram is smaller than actual size it is called a reduction.


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Lf a diagram is smaller then actual size it is a?

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If you put larger diameter tires on your car how would the speedometer reading compare to the speed measured by a radar gun?

If you put larger diameter tires on your car, the speedometer reading would be slower than the speed measured by a radar gun. This is because larger diameter tires cover more ground per revolution compared to smaller tires, so the speedometer would underreport the actual speed of the vehicle.


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IF you change the tire size from OE either bigger or smaller there will definatly be a change from the actual speed you are going. Not a huge difference but by maybe 1-3 mph depending on your tire size


Does tire size change speed?

It does not change the actual speed of a vehicle but changing tire size can affect the accuracy of the speedometer.