My guess is that the 235/85R16's will be too big for your AD. That size is the stock size for my '99 Ford F250 Superduty. They're nearly 32 inches rolling diameter, and they also mount on a 7 inch wide rim, nearly twice as wide as a stock AD 16 inch rim. The 215/85R16's fit on a 6" rim (normally) and are 30 inches in diameter.
