I bought an RST a week ago. Dealership was gracious and swapped my 24’s for 18’s. I realized my speedometer was 5mph high. Dealership said bring it in for reprogram. Then they sent pics from the computer that size downgrades ARE NOT AUTHORIZED. It looks like it can be done on WT and LT. Yhoughts from this group? Their service team recommended coming in and putting the 24’s back on. Maybe it has to do with 4 wheel steering?