Wheel Weight

[Captain Trips]

Is the diameter the same on the new tires? Running larger diameter tires means you're going further on each rotation, but the computer is still using the old measurement. That will mean you're also going faster than your speedometer indicates.

Same diameter. Only change is from a 225 to 245 width, and the weight.

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[Mark S.]

Same diameter. Only change is from a 225 to 245 width, and the weight.

If all the other numbers remain the same, going from a 225 to 245 will, indeed, increase overall tire diameter. The aspect ratio tells you the height of the tire's sidewall as a percentage of width, so if you increase width while keeping the same aspect ratio the tire will also be taller.

You can find more info about the sidewall number at this link.

You can do comparisons between different tire sizes--including overall wheel/tire diameter--using the calculator at this link.

 

[Captain Trips]

If all the other numbers remain the same, going from a 225 to 245 will, indeed, increase overall tire diameter. The aspect ratio tells you the height of the tire's sidewall as a percentage of width, so if you increase width while keeping the same aspect ratio the tire will also be taller.

You can find more info about the sidewall number at this link.

You can do comparisons between different tire sizes--including overall wheel/tire diameter--using the calculator at this link.

I learned something new. Thanks. Cool link.

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