As the rolling radius are different under higher speed turning it brakes the outside wheel
If you run the 245-40-19 and 275-35-19 the rolling radius is about the same and causes no issue
245/35/19 is 0.91% smaller diameter/rolling radius than oem 225/45/18, your 245/40/19 are 2.88% larger.
The 275/35/19 that we all run on the rear are a mere 0.44% smaller.
OEM difference between front and rear is 2.73% larger at the rear. 245/35/19 - 275/35/19 difference is 3.21% larger at the rear, only 0.48% out. What you are running with 245/40/19 and 275/35/19 actually has the front tyres 0.59% larger which is completely wrong
Are you sure those are the correct sizes and you didn't mean 255/35/19 front? That would give a 2.12% larger rear which would be fine. Or running 18's with 255/40 and 275/40 which would be a 2.42% larger rear, 0.31% out which is about as close as you can get?