Something else to be watch out for, if you filled the tire to 44 PSI while the weather is cold and the tire is cold from not being driven, as soon as it warms up, the tire warms up, and so does the air in it. For a temperature change of roughly 10 deg C the pressure will increase about 3 PSI. Which if you have filled up the tire to the max, already puts you over. Now fast forward to summer and the air temperature is 40 or 45 deg C higher plus another 10 deg C for driving on the highway in the heat, and your up 55 deg C, which is about 10 PSI difference. If you started at the max, now you're way over. Do I think a 3 PSI over the max pressure is going to cause instant tire popping, no. But I would not want to hit a curb or a deep pothole while the pressure is that high.
I'm getting the figures for temperature related pressure increase from here: Cold temperatures and tire pressure light That post explains the physics of it really well, with graphs to demonstrate just how big the effect is.
Bottom line, @Paulster2 is correct, use the pressure from your door sticker, not the tire sidewall.
I hope that helps!
