Are ZTs typically delivered with over-inflated tires?

[bgm1961]

I just took delivery of a ZT1 50" from Home Depot. They did a good job of assembling the mower in accordance with the manual. But when I checked the rear tire pressure, each was over-inflated to 25 PSI. Is that typical???

Background since I'm new here:
After renting apartments and houses with small yards for the past 30 years due to constant moving around with the military, this past fall, I purchased my final "settling down" house. It has a lawn which needs a riding mower, for which a ZT is the most appropriate machine for the job. While the ZT1 42" is perfectly suitable, I went with the ZT1 50" for its Fab deck, higher HP engine, and wider tires. Also, I purchased from Home Depot only for my military discount. (And yes, I'm aware of the benefits of purchasing from a dealer. Perhaps I'll start another thread on that topic).


Back to the topic (sorry, this turned out to be a narrative):

Honestly, I never checked the tire pressure before test-driving it. The only place that tire pressure is mentioned in either of the manual's Safety, Setup, or Operations chapters is in the "Setting Deck Wheels" step. And that's the only step I skipped while ensuring that Home Depot setup the mower correctly! I skipped it as I want to level the deck first, after which I'll check the height of the deck wheels. Plus, I didn't plan to lower the deck while driving it in the driveway.

So, I skipped that one step. As such, I overlooked checking the tire pressure. Also, the tires just "felt and looked" right for how a tire should feel to me. And yeah, there was a bit of an assumption that since HD got everything else correct with the setup, then the tires ought to be good, also. Though that wasn't an active thought, it's my excuse for why I didn't check the pressure before "taking her out" for the first time.

(By the way, the mower ran and drove like a dream (though the YouTube videos are correct about how loud it is). The ZT steering/maneuvering of course will have its learning curve, but all is exactly what I expected).

Anyway, the next day, before taking it out again around the driveway (I have a good-sized driveway), it occurred to me to check the tire pressure, "just to see how close it was to the requirement".

The first thing I read on the tire's sidewall was a warning to not exceed 35 PSI. "Okay, I said to myself, that seems right".
As such, I was expecting the requirement to be around 30 PSI, or something like that... especially given that's how the tires felt.

But when I found the "Max Inflate to" specification, I had to go get my reading glasses to make sure I was reading it correctly.

"Huh?"
"Ten PSI???? Really"
"Only ten???"

That was my reaction. It was especially so when my pressure gauge showed they were at 25 PSI!!!

So, a quick Google search of proper tire pressure for CC ZT1s (plus almost all zero turns), is that the rear tires are indeed supposed to be at 10 PSI!

Learn sumthin' new everyday.

So then, why did Home Depot deliver the tires at 25 PSI. Is that typical?