There are lots of bolts of varying sizes. They all should be metric though.
265/75-16
8x165
BCI group size 65 , 650 or 750 cold cranking amps for the 5.4 liter and 6.8 liter gas engines
Ford Factory specs for this truck are 235/85/R16 and can be verified by many independent tire sources.
bolt pattern orlug size for 1975 ford f250 highboy
The 2006 Ford F-250-Super-DUTY has a 5.4 L base engine size.
The 2010 Ford F-350-Super-DUTY has a 5.4 L base engine size.
The 2009 Ford F-450-Super-DUTY has a 6.4 L base engine size.
The 2005 Ford F-250-Super-DUTY has a 5.4 L base engine size.
The 2015 Ford F-450-Super-DUTY has a 6.7 L base engine size.
The 2013 Ford F-350-Super-DUTY has a 6.2 L base engine size.
The 2012 Ford F-350-Super-DUTY has a 6.2 L base engine size.