Knowledge Base

Article Number: 77 | VC4 | VC3 | Post Date: January 30, 2019 | Last Updated: January 30, 2019


I can’t find the tire size I need in the tire size drop down menu. How can I specify the size of my tire?

Setting tire sizes in Virtual CRASH is described in Chapter 6 of the User’s Guide. To change a tire’s size, simply go to the “axles” menu, select the axle corresponding to the tire size you wish to change. Then, either use one of the preset tire size drop down menu, or manually type your own values.

To learn more about reading tire size specifications, see this link: https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=46

In the example tractor below, the front axle tire size is 350/60R20; that is:

Section Width = 350 mm (13.78 in)

Aspect Ratio = Section Height / Section Width = 0.60

Section Height = Aspect Ratio x Section Width = 0.6 x 13.78 in = 8.268 in

Wheel Diameter = 20 in

This can be seen below:

If the tire size needs to be changed, you can manually change the section width, section height, aspect ratio, and wheel diameter as needed for your subject tire.  


Tags: tire size, tire sizes, changing tires, section height, section width, aspect ratio.


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