No offense taken!ha, Im not saying you are crazy, just the weirdness of the situation. I checked before and after as well and have seen zero difference to MPH from dash to GPS.
It's like when I tried mounting the spare. I barely could get the back gate to open. I had to purchase a relocation kit while others, (posted pics), have a 1/2" clearance with the stock carrier.
BTW. The Toyos were 9.4 lbs. heavier than the OEM Firestones