How would your speed change if you put larger tires on your car?

Up-sizing, or installing a taller tire, will lead to a speedometer reading that is slower than your actual speed. This is because a taller tire will have a larger overall circumference, causing it to need to travel more distance per revolution than the original equipment tire.

What could possibly happen if you put a larger or smaller tire on a vehicle?

When you put bigger tires on your car, SUV, crossover, or light truck, you raise the vehicle’s clearance — increasing body roll and load transfer, which may negatively impact your car’s balance and speed.

Will different size tires affect differential?

Mismatched tire sizes on a two-wheel drive vehicle will affect various drivetrain components and could cause harm. With two different size tires there is a difference in speed even going straight down the road. This will over-work the differential and harm it very quickly.

Will oversized tires affect transmission?

Changing tire size doesn’t affect your transmission, but it does change your final drive ratio. The effect is the same as if you had changed your transmission. How much difference you have depends on how different the tires are compared to the stock tires. Larger tires will lower your final drive ratio.

What happens if one of my tires is a different size?

If you continually use mismatched tires and wheels they will wear out unevenly and can cause problems later down the road. If you choose to drive your vehicle with mismatched wheels the same issues can result. Mismatched wheels will fit each tire differently causing uneven wear and tear.

Can you put different size tires on the same rim?

You can change the size of your tires with the same rims, as long as the tire and rims have the same internal diameter. Tires are flexible, however, so the width and height may be changed. The key to changing your tire size is to understand how tire specifications work.

How does tire size affect speedometer accuracy?

How a Change in Tire Size Affects Speedometer Accuracy When you change out your tires and wheels for a larger wheel, you always want to respect the overall diameter (OD) of the original tire. A lower profile tire must be placed on a larger wheel to keep the OD close to the same as the tire/wheel combination being replaced.

Why is my odometer reading wrong on my car?

Also, any change in the tire OD will give you a false reading of speed and distance on your odometer. When your vehicle was new, the speedometer was calibrated by the factory according to the exact size of the intended tires.

What happens when you change the size of your tires?

When your vehicle was new, the speedometer was calibrated by the factory according to the exact size of the intended tires. If you change to a taller tire, the circumference of the tire will also be greater. What this means is one rotation of the tire will take you further on your new tires than on your old tires.

How do I know if my speedometer needs calibration?

Repeat the test three or four times to be sure, and average the resulting times. If your average time is off by 3 seconds or more, your speedometer is likely in need of re-calibration. If you have changed out the tire and wheel package, the OD and resulting change in revolutions per mile is likely the cause.