The 420 is awsome and I love it !!! My buddy has the Foreman 500 and we ran them together, and I max out at 60 with the Executioners and he hit 56 to 58 and he has the same tires also....I just love the H.P.!!! The EFI isLooks Good! I also have Executioners on my Foreman and I think they are an awesome tire. How does the 420 compare to a foreman 500 as far as power goes?