Lol, not looking for backflips, I just don't like the front tires to unload and look like pizza cutters on hard acceleration. I might go down to 50k.
I just remeasured the tires and they are 4.25". Maybe the foam compressed a little?
Anyway, on 4s, that 2650 motor geared 52/16 will get you 41mph. On 3s, you'll need to adjust gearing to 52/21 to get the same speed. It's a bit steep on the rollout, but should still be ok.