i have an 04 f150 supercrew and i'm looking at putting a leveling kit in it and rims and tires. i was gonna go with 285's but with the 4.6 they aren't a powerplant but don't want to completely kill it's power. anyone got any pics with 285's on their F150. how much do the tires kill the power?

 

well i just got my 285/75r16 (33x11.5) BFG A/T. i have the 4.2L and i didnt notice the power loss at all! so your 4.6 will be fine!

 

Yea; you won't notice a difference man.

 

You will be in good shape. I think the newer generation (yours) of 4.6L's have a few more horespower and pounds of torque than mine (2000 Triton). I upgraded to the 285/70/17 BFG A/T's on my truck and did not notice ANY loss of power. Additionally I have not seen any discrepancy with the speedometer. During my drive to work I routinely pass by one of those radar on a trailer deals with the big LED this is your speed sign and it always corresponds with what my factory speedometer says.

Enjoy the upgrade to your ride, post some pics!

 

I have 305's on mine and it does just fine!!

 

I have the 285's and love them. I would recommend a tuner though. The Edge really helps.

 

X2

 

thanks guys i'm not really gonna do the upgrade till the summer or when it gets warmer just doing some research. i'm looking at the triton 6 rims the black and chrome they look awesome don't know what i am gonna go with for tires

 

I agree with the rest, no problem with the tires just add a tuner.

 

i've heard that tuners are hard on transmissions any truth to that?

 

you'll be fine like they said

 

i'm running 315\70\17 and couldn't be happier.

 

Wow, I can't believe so many think that is acceptable. I don't even like the 5.4L with 285/70R17's and 3,73 gear! Everyone's butt dyno is different. If you want to upgrade, at least go with a light (read p-rated) tire.

 

I have an 06 4x4 scab with the 4.6 and I just put 33x12.50 Cooper STT's on this past weekend and I can't tell a difference in the power. I don't feel as if it lost anything. I have put a few hundred miles since buying them and I love it!!

 

i have 285/70/17 E rated tire and there was a slight loss in power but only if your really looking for it. you probebly wont even notice.