Schwarzenegger true height

[hench]

People are put together completely differently,  big bones,  light bone.  Arnold easily had a 57" chest, it was ridiculously thick and is still big now at nearly 80. My chest is about 46, stretch another 10 on a tape measure, he easily have that on me.
You can't rely on bodyweight either everyone is unique

Let's think about this.

1)  Claimed height:  6'2".

2)  Claimed weight 230-240 pounds.

3)  Claimed arm size: 22". 

4)  Claimed chest size:  57" (!!!)

Compare vs. Ronnie Coleman.

1) 5'11"

2) ~280+ pounds

3) 21.5" arm.

4) 57.4" chest.

If Arnold's telling the truth about his chest, arm, and leg measurements, he'd need to be actually heavier than Ronnie -- because Ronnie has approximately the same measurements at a 3" height disadvantage.  Rule of thumb is that 1" of height adds 7-10 pounds.  So Arnold would need to be about 300-310 pounds, minimally. 

The guys you flagged as being "similar to Arnold" in height and weight -- de May and Reg Park -- are nowhere close to those measurements.  Reg Park's arm measurement is usually given as 18.5" to 19"!

So those "measurements" are lies, pure and simple.  Seriously, the notion that his chest ever measured 57" is a howler to anybody who has any idea what average bodybuilder chest circumference measurements look like.  In reality, if he was say around 240 pounds, it's most likely that his chest was 52" max, with a pump, and his arm was ~19.5 - 20".  The latter is indeed what Arthur Jones measured:  http://www.arthurjonesexercise.com/Bulletin2/36.PDF

The difference between a 20" arm and a 22" arm is like night and day. 

And a 52" chest is very good for a high-level modern bodybuilder, whereas 57" is basically Ronnie Coleman tier, which only a small handful of post 1990s mass monsters have ever achieved.  (And always at bodyweights approaching or exceeding 300 pounds.)  Even Dorian Yates never claimed a 57" chest circumference.

[Stephano]

People are put together completely differently,  big bones,  light bone.  Arnold easily had a 57" chest, it was ridiculously thick and is still big now at nearly 80.

Peak Ronnie had a 57" chest.  Dorian Yates never attained a 57" chest, except perhaps in the offseason at 300 pounds. Phil Heath's chest was reportedly just 54", and could have been even smaller.  You have no idea how large a 57" chest really is. 

Keep in mind that the size and thickness of your back also heavily influences your chest circumference, just as your triceps heavily influence your "bicep" measurement.  Arnold's back was downright pathetic compared to all of the above-mentioned names.

Also: The US military keeps statistics on soldier measurements for making uniforms and equipment.  The 99th percentile male soldier has a 50.24" chest at a weight of 275 pounds.  The average, 50th percentile male soldier is at 41.57" and 186 pounds.

It's literally impossible to have a 57" chest at 240 pounds and a normal human male height, let alone 6'2".  Muscle has certain density (1.06 gm/cc) which doesn't vary much between individuals (or even different species, even in non-mammals) and which you can't handwave away.  The same goes for bone (1.5 gm/cc on average).  You can build a model from those lying measurements, check its volume in cubic centimeters, and figure out what it would weigh.  I'll give you a hint: It's >300 pounds.