Re: Tire Size = Tractor Speed

Posted by Bob on September 28, 2004 at 17:20:26 from (66.163.134.177):

In Reply to: Tire Size = Tractor Speed posted by Lance on September 28, 2004 at 14:41:51:

From the Firestone website, here's some info.

The ROLLING CIRCUMFERANCE is the distance the time travels in one revolution, and will vary some between manufacturers and tire models within a specific manufacturer, even though the "offical" size is the same.

15.5-38 ... 184"

16.9-38 ... 198"

So... 184/198=.93

So... Changing the tractor over to the smaller tires would reduce the speed to 93% of the speed it was going with the bigger tires.

The overall diameter of the smaller tires is 28.4", versus 30.4" with the larger tires.

Once again, this may vary a bit depending on who made you tires, but this should get you close!

• Ag Tires

Follow Ups:

• CORRECTED POST Bob 17:25:17 09/28/04 (0)

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