Bill,
Thanks for the chart link! Looking at the chart, what is R&P? I understand
that the top grey line is the tire size (we used 31" tires.) But i don't
know what the R&P (the numbers in gray from top to bottom of chart?)
represents.
thanks for your help!

cal

"L.W.(Bill) Hughes III" > wrote in message
...
> http://www.raingler.com/tech/speedoChart.asp
> God Bless America, Bill O|||||||O
> http://www.billhughes.com/
>
> Cal wrote:
>>
>> Several gears to choose from....how do you determine which one you need?
>>
>> cal