Unable to remove gas cap due to extreme heat

[jerseyspyder]

In all my years of driving this has never happened. I own a 2012 RT Ltd with 19,000 miles and was unable to remove the gas cap on a 90+ degree day, after traveling in bumper to bumper traffic for an hour, then making two stops one of 30 min., traveled another 30 min. in heavy traffic, then a 15 min. stop both stops with engine off. I then went to fuel my beast as the low fuel indicator was glowing and I had ridden about 135 miles. I arrive at the gas station and the cap will not release, it just clicks. I get home and park in my cool garage but decide to measure the temp. at the fuel cap since it was hot to the hand. I registered 160 degrees, the surrounding area at 145 degrees and the handlebars at 111 degrees. No wonder I sweat when riding. Any way I wait about 45 min. and can then remove the gas cap. I fuel up the next day and have had no problems since. I have ridden my beast in similar conditions before and have not had this problem. I took 5.2 gal. the next morning so I guess the heating of the gas vapors caused the threads to expand preventing the cap from being removed. So, I now am concerned about fire, explosion and always leaving spare time to permit the beast to cool before fueling. I've attached some temp. pics.

Any thoughts?

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[Barlock]

That is not good. You got me worried too because I own a 2012 RT as well.

[Chupaca]

next time squeeze the sides while twisting. Have seen this in several occations. The caps ratcheting system seem to weaken with the heat. Some caps have just fallen apart...

[jwulf74]

Could be a bad gas cap or could be something blocking the vent line. I accidentally kinked by line expiramenting and while the pressure wasn't high enough to keep me from opening it, it did let me know that there was a lot of pressure there.

[TexasSpyder]

Any One Else?

I have a 2012 RT Ltd. and replaced the cat with a bypass and the stock muffler has a slight rattle in it that wasn't there before. Any one else have this, or am I the lucky one? I like the deeper tone, but not sure about the rattle.

J. D.