Any help is appreciated. A couple months ago I upgraded my gears to 4.88 on a 2015 jku with 35" tires. About a week ago I noticed my engine temp running halfway between the midpoint line and the 3/4 line on the temp gauge while riding between 65 and 70mph. As I approached 80mph the temp gauge ran closer to the 3/4 mark. I checked the radiator and it was full. The overflow container was very low so I filled it but the issue persists . Is that a normal engine temp at the higher speeds or is there a problem ?