I was searching for some charts for replacement tires, and found the following tire size charts and other information... Hope that this is of some help to you.. Paul
Assorted calculators for tire information - http://www.oly4x4.com/articles/4x4calculators.htm
letter size conversion chart - http://1970mgr.org/_Tiresizes.htm
another tire conversion chart - http://www.turbinecar.com/tires.htm
very comprehensive cross reference chart - http://www.whitewallcandystore.com/CrossChart.asp
Assorted calculators for tire information - http://www.oly4x4.com/articles/4x4calculators.htm
letter size conversion chart - http://1970mgr.org/_Tiresizes.htm
another tire conversion chart - http://www.turbinecar.com/tires.htm
very comprehensive cross reference chart - http://www.whitewallcandystore.com/CrossChart.asp