I am looking into a lift kit for my 2016 F250 6.7. I can't decide wether to go with 4" or 6". Are there any pros and cons to either? I am thinking of running 35" tires with 20" rims. I don't do a ton of towing mostly just my 4 place snowmobile trailer. I am looking for a lift that hs a decent ride.

 

Also I have a 100,000 mile extended warranty, would a 4" or 6" lift void that warranty? Would I be able to get away with a leveling kit if it does void the warranty?

 

I would say the only con to the 4-6" lift with 35's is that the tires are going to look small on that big of a lift. These trucks can take larger tires than the 99-04 trucks. 35's fit my truck when it was stock and I run 37's now with a leveling kit on factory 20's.

There are plenty of good lift kits out there. I personally run a Carli leveling kit and I like it. I have a friend with a Rough Country and he likes it. I have run Icon in the past and I liked it as well.

Here is mine on 37's.

 

Agreeing with 89LOX306 if you are wanting just 35's a leveling kit would suffice. If you are running an aftermarket wheel you can stay with 35's and a wider wheel/stance if you decide to lift the truck more. I would say based on options most kits out there lean towards a 6 inch lift height once you pass leveling and blocks in the rear.
My personal preference would probably be the 6 inch lift and run a 37" tire. Tire prices jumps some, lift kit pricing is not much difference from 4 to 6. Really up to you though. Everyone has their idea of what looks good.
In terms of brands. Zone for us is usually the best bang for the buck. We do Pro Comp which is a very popular OE dealership option. We have Readylift. Glad to help however we can.

 

Zone off-road lifts all the way. They are a sister company to BDS. Have run zone kits on several trucks never an issue with anything.

 

Go 6" lift, 35" tires & 12"' wide wheels

Fenders sitting right on tires with Skinny rims don't look aggressive

37" tires kills power, mpg & HARD on brakes

 

I'm in the crowd of stock height or a leveling kit with 35's. Large fender well gap looks goofy to me.

 

Agreed and Agreed. I'm puzzled by the Carolina Squat, also not sure about the tall lift - wide wheels - stretched tire look. To each his own as they say.

 

You can run 35x12.5 stock, no need to lift. Though I am looking at doing a 6" lift in the coming weeks.

 

If I go with a leveling kit what's the best one to go with spacers or coil spring replacements?

 

I would say most will agree, the best kit you can get for a daily driver is the carli commuter 2.0. But it is A LOT of coin. If you've got the budget, look into it. A lot of people run the ready lift 2.5 which use spacers and shock extensions and has a trac bar relocation bracket. It also has rear blocks to keep the truck truly level, since the new 250's have very little factory rake. That's probably the kit I'm going with. There's lots of good kits on the market, just depends on your budget. Just do it right and don't skimp out on a cheap lift. Keep your steering geometry correct. Wearing out 2 front tires in 10k miles will cost you more in the not so long term. Not to mention crappy driving characteristics i.e. Death wobble and bad bump steer.

 

Just another opinion, but if your going to run 20" wheels, 35's still look small because there's just not a lot of side wall, go 37's with a leveling kit. With what you tow, the 6.7 will not care. The factory 20" tire is practically 35".

 

If I were going to level I'd go with new coils but nothing wrong with spacers at all. Comes down to how much you want to spend.

 

Something to consider when changing tire sizes:
https://www.ford-trucks.com/forums/1...tire-size.html

 

Carli commuter really like 2 grand? Holy crap...lol