Got a new transmission bc last one was going out had truck reprogrammed back to stock. 99 gmc sierra 2wd 5.3 4l60e. Went with the bigger than stock tires which are the optional size posted on the sticker on driver door. 255/70/16= 30.1 according to hptuners conversion table. Tried it both ways auto-scaling and leaving it alone think it was better without auto scale so these files and log files are unscaled. Still I get the same shift errors as I did with the oem stock tire sizes which were 29.23...I just don't understand how im getting a 6.4 or 6.3 shift time error when its only .5 or half of a second. Also its very uncommon for my 1-2 to have shift errors 3-4 has shift errors but 2-3 always has them in fact if you watch the scan log before I have even taken the vehicle out of park already has a .6 shift error without even driving it. Can someone please tell me what the hell is going on?