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Mad Roger Mad Roger is offline
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Default What's the performance difference between 15 inch, 16 inch and 17 inch tires (all else equal)?

On Wed, 19 Jul 2017 09:17:21 -0400,
Ed Pawlowski wrote:

You will find some actual test results here
https://www.carthrottle.com/post/how...t-performance/


Thank you for that performance-related test article,
https://www.carthrottle.com/post/how...t-performance/

Where the 3 main performance-related takeaways are...
"the force can be calculated to be around 460 Newtons. Now, increase that
wheel diameter to a set of 19-inch ... Run the calculation through again
and that driving force will decrease to 360 Newtons... which will culminate
in a decrease in acceleration of said wheels."

"Fuel economy will inevitably suffer as well due to the engine having to
work harder to rotate the wheels"

"Smaller diameter wheels will make for more concise handling as each
rotation of the wheel covers a shorter distance, meaning more acute
adjustments can be made during cornering compared to a larger diameter
tyre"

To summarize what the article said for moving to larger-diameter wheels...
+ The engine delivers less driving force to the wheel contact patch
+ Which results in a decrease in acceleration & decrease in fuel economy
+ And there will be a decrease in handling (all else being equal)