I was told not to launch mine till I got a modified transmission first gear would shear off if I didn’t. What they told me was to get a hardened 1st gear. It might be because my tires are 10 inches wide too..soo I have never launched it hard just to be on the SAFE side! You my be Right @DannyP I’m by no means a expert on transmissions or really anything else that’s why I Rely on you guys