Heres a question.
How much power loss difference is there between 33"s and 35"s?
Thanks

 

I drive a new FX4 with the 5.4. I went from stock 275-55 20s to 35X12.50 20s. I really didn't notice any lose. it might be the new engine.Even my buddy who is really very detailed was surprised.

 

I used to have 33s on my 2000. Went to 35s. now i gota do gears because itll hardly hold it in od goin up a smal grade. older engine than yours tho.

 

Its usually 10lbs or a few less extra weight per wheel, and obviously a larger roational mass with the 35s which throws the speedo off a bit. The Rotational mass I wanna say varies 30 - 50 turns per mile from 33s to 35s.