30x9.50x15 = 29.99" dia
P265/70R15 = 29.60" dia
Speedometer Difference: 1.326% too fast
http://1010tires.com/TireSizeCalculator.asp?action=submit
P265/70R15 = 29.60" dia
Speedometer Difference: 1.326% too fast
http://1010tires.com/TireSizeCalculator.asp?action=submit