How to get the Tire off a RCK60P-F39

[78Vette]

Doing my spring maintenance on my deck - RCK60P-F39 and noticed the front tires low on air. One wheel was easy, but the other has the air-valve facing the wrong way instead of out, towards me in order to put the air-chuck on and then the air pressure gauge.
So, i took the wheel off and the 4 nuts in the center, hoping it'll just seperate so i can turn the tube/valve. Having no luck getting them apart and dont want to damage the rim/tire trying to force it off.
Any suggestions are welcome.

 

[78Vette]

As it turns out, i am still unable to get the tire off, on which is says "tubeless".
I did put some air in and the rim split apart about an inch and i could see that the tube isn't twisted as i had suspected. So, i either deal with it or call the dealer and see if they'll change the tube for me, thinking it has the wrong tube in it or the tube has a flaw, being that the other tire is as should be.