As wheel sizes go up, more and more off-road tires are coming in Metric sizes. How do you figure out how big a tire is in good old fashioned standard US measurements? Now it's easy! Just plug in the size in the form below to convert it.
<% If Request.QueryString("PSize") <> "" Then %>
<% Dim PSize, Ratio, RimSize, OD, SectionWidth
PSize = Request.QueryString("PSize")
Ratio = Request.QueryString("Ratio")
RimSize = Request.QueryString("RimSize")
OD = ((PSize * (Ratio/100) * 2) / 25.4) + RimSize
SectionWidth = (PSize/25.4) %>
Your Metric Size of <%=Request.QueryString("PSize")%>/<%=Request.QueryString("Ratio")%> R <%=Request.QueryString("RimSize")%> =
<% End If %>
<% =Left(OD,5) %>
<% =Left(SectionWidth,5) %>
Rim Size: <%=RimSize%>"