I was convinced that my tyres were the equvalent to 31", because that is what the guy who sold them to me said. But i measured them yesterday after seeing a Pajero with 31x10.5 BFG AT's (Drool) and they are only 28.5". They've lost about .5" since i got them about a year ago. Gonna drive like a B@#*& for the next few months so i can put at least some 31"s on. Definite "small willy syndrome"

 

http://www.procomptires.com/tireconversionchart.html