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I would like to run a 33in tire on my truck on a 20x10 rim. I figure if im going to pay the money I might as well go bigger instead of going to a 15 or 16in. What Im not sure on is if a chrome rim like the fuel octane im currently looking would be ok in the mud, or should I give up on big chrome and run some mickey thompsons? The truck is my daily driver but I will get it dirty every once in awhile.Should I look at an 18 or 17 instead?
That's mostly a matter of personal taste. Personally on a truck that isn't loaded heavily and occassionally goes off-road (like my Bronco) I like a 15" rim in a 33" tire. If the truck is going to see heavier loads I like going to a load range E tire on a 16" rim (again, at 33" tire OD).
Why do you want a bigger rim? If it's for looks, then it's up to you what look you want.
If it's for handling, I've been pretty happy with load range C at 15" and very happy with load range E at 16". I could see maybe going to 17" or at most 18" to get really solid handling out of a load range C tire if that was your main goal.
If you want to air down your tires to work better in rocks I certainly wouldn't go bigger than 16" (and 15" works really well).
I don't have experience with mud (I try to avoid it) so i can't give any advice there.
I guess mostly looks is what Im looking for. How can I tell if the rim will fit? I know what the lug pattern is, but I have no idea what offset is ok to use. I believe its 0 to -20 but with I put a 4in lift on? What offest can I use then?
just remember, besides the outrageous cost of the 20 inch rim, the 20 inch tires cost 3 or 4 times more than the 15 inch tire.
you can buy 4 very good 15 inch tires for around $450.
4 20's with rims is going to run you close to $2,000
Remember to check the load ratings on the rims based on what you'll be hauling/towing. With the F150 it may not be as large of a problem, but finding aftermarket rims rated at the same capacity as the OEM wheels, especially in larger sizes and the "older" (not metric) bolt patterns, gets very difficult.
Not to be rude, but I've seen 20+wheels on these trucks and they usually look out of place. I've seen 18s look good but usually more than 17 just doesn't flow with the lines on the truck. I currently have 15s with 33s and love the look.
Looking more into I think I have given up on the 20s and more towards 18 or 17s. Whats throwing me off now is what offset is ok and which one isnt, Ive seen some I like but they have a offset like -12,+1, some even have +20 that I like.
Offset is going to depend on what the rim width is. You want to keep it under 4" of backspace to prevent problems with clearance. Conanski explains it in this post: