I have had defender LTX M/S on my other rides and I have a set waiting at Costco to be installed on my 2019!! cannot wait as they are the best road tires period!
What did you replace the tires with #1----but other than that your situation sounds normal to me, mine will not hit 10th till 60 and if I put it sport mode it will not go into 10th until 70! I think you are fine!
Wow--this is a sick mod, too bad I have a 19 lol! I was thinking by now these newer trucks would have the rotary dial installed at factory--Looks awesome