Thanks for quick replies,guys.
Starting to hear enough about this Alfa trick... that I might have to just buy one and play with tire sizes-- and probably other stuff, eh?
Do you also, by chance, know where to find one?
sized up the factory tires--quite a bit..., now nobody (including local dealer) seems to be able to change that "revolutions per mile" factor in vehicle software, (2018 ecodiesel). Shift points and speedo are presumably a little off now. Should this be so hard??