I know it's been a while since this post...
I traded in my 2011 6 speed for a 2016 8 speed. The shifting from 1 to 2 is driving me bananas. it's like a hesitation kinda skipping feeling. I had 2 dealers look at it and the latest software update. Nothing has changed. both dealers say everything is fine.
All the other gears feel just fine.
Are you still finding going with the larger tire resolved the 1 to 2 shifting debacle?
My stock tires are 285/60/R18. It looks like the 285/65R18 KO2's are about an inch larger in diameter compared to the stock tires?
Thanks
Rod
FYI the OP hasn't logged onto MUD since Nov 2018. Maybe he'll get an email alert though.