Im new to the site, love it so far. I just bought a 2005 F150 STX . I bought 20" INCUBUS BANSHEE wheels and 275/55/20 FALKEN STZ-04 tires. I know these will fit in place of my stock 255/70/17's , but will I need some kind of edge tuner or some other tuner ? What do you think about a 2" level to even out the back? THANKS

 

welcome to the site- sounds like you've got things figured out- all you got to do now is read, and then of course post pics!!! edge, or xcal2 tuned by Troyer performance are the two most popular tuners here- so go down to the chips/tuners forum and read up, and then the leveling kit- it definitely works great- i've got a 2.5" so go down to the suspension forum, or most likely the 04-06 and search there and you will have a TON of posts to help you decide...
J

 

I think the truck would look better with a set of lowering shackles without a doubt. Also, you don't have to recalibrate your computer, but it is a good idea, because your speedometer/odometer will be off slightly depending on the difference in the height of your new tires.

 

HEY WANDELL. tHE TIRE DIFFRENCE IN HEIGHT IS LIKE .85" WILL THAT REALLY MAKE A BIG DIFFRENCE? SO LEVELING IT 2 - 2.5" IS JUST LOWERING THE REAR END?

 

well theres leveling kits which bring the front end up to resolve the rake, (which give you a more aggressive/off-road stance...OR you use lowering shackles to drop the rear end to resolve the rake- for a more low profile/street stance...

 

No, that won't make a big difference. On my Screw, I went from an OEM 30 inch tire to a 33 with no problems at all. My speedometer is just off 5 mph at 60 mph. With the street tire/wheel package you picked, I'd level the truck by lowering the rear with lowering shackles rather than lift the front with a spacer.

 

any advice on what kind of lowering shackles?

 

I'm not sure, you may want to check in the 04-06 forum. I recall some members suggesting getting the ones that come with pinion angle shims also. Apparantly, the new F-150's are extremely sensitive to pinion angle.