I get the standard size tires do not measure close to what the sidewall does. I think there was confusion in what I was asking and what you were getting at. I was not contesting the size of a 35, but rather that a 285/70r17 measured close to a 35. I think what you meant was a 285/70r17 or a 285/75r17 measures closer to the speced height and not that they are close to a 35.
If I am wrong please let me know.
PS My 285/70r17 measure 32" at 32PSI on a 8.5"wide rim.
Again, I have never seen a 33" tire have an actual measurement that is much more than 31" and a 35" that measured much more than about 33" and in some cases, I have seen them come in at closer to 32" as is the case with a BFG. I would also agree with you that a 285/75r17 would come up to close to 34" and given the circumstances, I would argue that a 285/70R17 is closer is size to an advertised 35" tire than a 33" tire. Of course, my original point to the OP was that a 315 would be BIGGER than an advertised 35" tire and that it was something he should be aware of. That's all.