In Broughy1322's latest video he explains that the cars with the 'shift early' Advance Handling Flag have a speed glitch with low grip tires. All you need to do is double clutch
LFS Forum - XRT drag time..record??
LFS Forum - XRT drag time..record??
XRT (78086-4) – Jennys RC LLC
2023 Traxxas XRT VS Sledge. Which One Is Better For You?
LFS Forum - XRT drag time..record??
New Traxxas XRT Comparison To The Xmaxx At Big Bertha Same Jumps for Jump my thoughts? - YouTube