It is, Tom. I have a 9" tread width, almost 12.5" section width, 29.3" diameter tire.
With this... I have absolutely no extra clearance ANYWHERE:eek: ... but it DOES fit in the 62 wheel well ( very minor trimming of the front lower lip, to allow for tire growth. If you keep diameter less than 28.5", you'll have no cleartance problem.