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That's interesting my 2015 5.0 with 3.55s will smoke the stock 20" Hancocks no problem. I have to be careful how I accelerate or it'll kick in traction control or spin if that is switched off.
Of a similar note, my 2013 5.0 with 3.73s would smoke the stock tires. My 2016 5.0 with 3.55s won't. (Yes, I tried.) Which is why I wanted 3.73 but gave up searching.
Maybe you got the mustang coyote in yours (just playin'!)
My 2015 5.0 with 3.55's will roast them tires from a stop at 1/2 throttle.
This is with 33" duratracs on. I have to be careful accelerating from a stop sometimes.