Sh*t I Never Knew: Fits For Me! || Wheel Fitment 101

Sh*t I Never Knew: Fits For Me! || Wheel Fitment 101


– Hey guys, it’s Shawn
with Custom Offsets, Custom Offsets TV on the YouTube. We got another (bleep)
I Never Knew for you. We’ve been hearing this from day one, and we finally are gonna
make a video on it, just been kind of thinking about it. Rather than delivering smart
responses to you guys, we’re gonna go with
actually explaining it, and this is gonna be “Fit For Me.” Every single time we post up a Ram 1500, a Ram 2500, a Super Duty,
and we’ve got 12 wides, and 35s, somebody chimes in and says, “What the F, I got that
to fit and I got 37s, why did you guys have to trim for 35s?” And literally what I
think people are doing, is they’re looking at
the size of the tire, compared to our size of our
tire, and they’re saying, “It fit for me, it
should fit for you guys, I don’t understand why you’re trimming.” The problem is they’re not
putting all the math together. So what we’ve done is we’ve
built this beautiful display for you guys so that we can
kind of walk through the whole fitment concept. So we’ll give you this bird’s
eye view also so that you can really look into this, but, what we’ve done is this
is the front of our truck, so this is your front bumper, this is your driver’s side
front tire, your front left tire if you’re here in America. This is the cab corner, this is gonna be your axle shaft, your CV, your hub, and
your lower control arm, or upper control arm. This is, the control arm
got a little out of control, so just bear with me, it’s over exaggerated so
that you can see it easily. And this is our stock OEM size, 32 and a half inch tire, it’s a 265/65, or 265/60R20, and with a 20 inch wheel. So when you look down on this
thing, what you’re gonna see is basically, I always picture
it like the quarter back in the pocket, when they
first come out of the snap, they’ve created this perfect
little safe happy zone, where as long as this tire is
in here it does awesome stuff, and it does its job, and it
doesn’t bump into anybody else, and it just has a good old time. So this is what the engineer
said, let’s create this pocket, what they’re doing however is
they’re creating a pinch point here, and they’re creating
a pinch point here, and they’re also creating
a rub point back here, where those upper and lower control arms, depending on the vehicle,
whichever one gets closest to it. Where this factory wheel
is good and happy because it’s hitting bump stops before it, or not bump stops, the full lock, it’s hitting the full lock
stops before it hits any of the control arms and all that other stuff. 32 and a half, this is probably
like a eight and a half inch wide, plus 31 offset. Now what happens is, we move, away from, the eight and half wide
with a positive offset, and we move in to, where’s this bad boy, if you didn’t know, you
can always find your width and offset on the back of the wheel. This has got a 20 by 9 plus
14, so we went a half inch wider on the wheel, and we
went like 15 millimeters, I don’t know, what’s the math, 17 millimeters, less positive, so as that
happens, what’s happening is this hub, where your hub
locks into the wheel, is headed this a way, and with the width the wheel
and tire are headed that a way, we now bolt that up, and if you come over here and look Fuller, it starts to push out
on the front of this, and now what happens is, when we turn, you’re
starting to smash into this, so you have to go in here, and you have to remove a
little bit of that valence. And you turn this way, and
it rubs just a little bit, so you might just let it
rub, and it’ll just wear a little bit off of that corner. So a 9 wide plus 14, you’re
not gonna get into too much stuff, especially if you’ve
now leveled the truck, because you’re bringing
that up a little bit. And the size tire is
probably 32 12 and a half, that’s what everybody buys, of course this is 285/50,
it proved me wrong. This is actually fairly close
to that stock size tire. Now what we’re gonna do, is
we’re gonna ditch that one, and we’re gonna get even more aggressive. Check it out. And now we’re going to bump up to, sometimes it’s on your outer
edge if it’s not on the back of one of the spokes. Negative 18 offset, probably
a 20 by 10, 20 by 10. So I’ve got a 20 by 10,
negative 18, and probably a 35. 35 12 and a half. I roll that into the same pocket, and voila. Now when I start turning that
35 is smashing into all of this stuff, I’ve gotta remove
this whole front corner of the bumper. I turn it this way, it’s
smashing into all this stuff, I gotta start creating
what we call a mini NorCal. A lot of times what you
can get away with is, you can keep this outer edge, and then you just remove a pocket in here, creating this new travel spot. Because if you look at
it, what’s happening, see how this is a flat? It’s geometry. As this turns, this is
gonna get close to it, and as that suspension
flexes, this is gonna get even closer and closer to it. That’s why a lot of times
you don’t hear it rub until you get to full lock,
because you’re hitting that. So that is why you have to start trimming, and ideally if you’re good at
it you can make it look like it was born that way,
and you start to create, you get rid of that pinch point basically. Now, when you go really crazy, and you want to get yourself
some of them Specialty Forged, fancy ass wheels, and
some 36 and a half by 15s. Now you gotta put in some work. So now if you’re looking
down at this thing, I’d cheated even, tried to
make it look better than it is. And you’re way outside that wheel well, you’re going to, when you
turn, you’re gonna clip this entire corner of the bumper off. So now you’ve really gotta make some room, commonly called the SEMA beaver, because the SEMA guys are
trying to push all those edges. Sometimes you guys will
even have to get in here and do full blown body
work and basically change, that entire corner, or that they just don’t go full
lock so they don’t hit right there, and then usually this
one will suck in and clear. Here’s another thing that
people don’t realize. My truck never rubs except
for when I back out of my driveway while turning. You gotta remember, it
doesn’t turn like this, because sometimes you’re going
forward, and it causes it to turn like this, and it
tips that wheel in or out, when you go backing, tearing
out of a driveway in reverse, and you’ve got it cranked
like this, it’s gonna kick the bottom of this tire
out, and that’s why you hear it rub for the first time
on the front of this liner, because you’re basically
kicking it forward because you’re causing a drag
when you crank that wheel, and that’s why that thing rubs. One more thing I wanna show you. Let’s … We’re gonna have to pretend, Fuller. I’m gonna grab this really
strange, tiny, no offset wheel, ready for some off roading, and we’re gonna pretend, that I went with my stock
tire, or a positive 30, offset 8 and a half wide,
but I put this big fat meaty tire on here, and now what happens is, because it’s still the same distance here, but you’ve created this giant
sidewall that wasn’t there when you had a stock setup, now
you start rubbing into here. So then people start to
rub on the control arms, because you’ve created this
big boom, or you’ve gone from a 10 inch wide tire, to a 12 inch wide tire, even though you haven’t changed
the wheel, you’re creating this big balloon on top of that wheel, and they didn’t allow
the clearance in here, so you rub up on either the inside, the front or the rear, of that control arm when you try to pivot, and that’s what you’re running in to. So the other fact is, and I can probably show
this best with my chalk. If I’m running a 33, let’s say factory 32, and I
drop a straight line I’m running in here. And now I go up to 37s, in here. Remember, as I increase
my width and offset, I’m moving everything. I should say increase my
width and decrease my offset, less positive or even into the negatives, I’m moving everything this direction, and that’s why as you have
more width and lower offset, especially to the negative offset, you’re still the same size tire, but you keep dragging it out here, and remember, this is where
we had our pinch points before we went and SEMA beavered
the shit out of this, and that’s why as you move it out, even the same size tire,
the 37s, start to hit, because you’ve moved out of that pocket. Remember the NFL, you got your pocket. You’ve moved out of it, so
now you’re gonna get your ass sacked, unless if you go in
here and do some trimming. Same thing. And now you’re clear. So all I have to know about
that is I’m absolutely exhausted, I have broken a sweat, peace. (electric guitar music)

Only registered users can comment.

  1. The issue I have is, I live in Cali and if I order tires / wheels from you, who is going to trim my truck 🙂

  2. these are probably customer truck but and u do more Tacoma..im feeling kinda left out.that 6inch with 35s with 12 wides is beautiful..

  3. Also, as the wheel moves further out, the more the front wheels move like a radio flyer wagon. They no longer pivot around the hublike what was demonstrated in the video, but they swing in an arc forward and back as you turn the wheel.

  4. I have a '17 2500HD Duramax with about a 2" leveling kit installed. The stock tire is exactly what you showed at the beginning of your video. 265/60/20 I believe. I am hoping to be able to fit a Ridge Grappler in 35×11.5×20. In your experience will this tire fit? Don't worry I won't hold you to it. LOL.

  5. I just ordered wheels and tires from you guys and I’m not sure if I will need to trim and after this video I just have anxiety about it.

    2017 Ford F-150
    20×10 -18
    295/55R20

  6. I have a stock 2003 ram 1500..
    I want to put 33 inch tires on a stock 17 inch rim.. Will this fit or do i need a lift/level kit

  7. Wish i was close to you so you can work on my truck lol. What would you recommend me doing for a great fit on my 2017 chevy colorado i am planning to lift it next month. On a 3inch lift. I kinda want to put 20s but i wouldnt mind 18s for rim size. I dont know much and seeing if someone can help me out before i just go to a spot and have them eff me over

  8. I just bought a 2014 Silverado and so now I’m tryin to figure out what I can run and what not on it. When I had my super duty I had it all figured out what I could do with it but idk about these newer Silverado’s

  9. I realize that it depends on the driver and most mud tires don't last long. Just wondering what are some good mud tires that last and do great year around?
    I have the Trail Diggers and they are bad ass except.. They suck in the winter and.. I'll be lucky to get 25,000 out of this set.

  10. People don't understand the degree of inclination the spindles have will make the tires arc up and down and the camber will change making the tire move around some in the wheel opening. It is way more than just the static ride height position.

  11. my 1500 chevy Silverado still hitting the f** plastic, and I have to remove the tires again to cut more.😣

  12. Shawn I have a 2006 Silverado 2500HD and Im going to be installing the Zone 3" lift kit. I want to run a 33" tire and do minimal trimming. What wheel and tire size combination would you recommend?

  13. Scenario: I have a 2015 Silverado 1500. If I put on 3.5" lift with 1/4" wheel spacers can I run 35's with the stock 18" rims with or without trimming

  14. Can somebody help me ?¿
    I’m trying to fit some
    33’s with negative 43 offset on a Nissan Xterra 2000 (stock suspension)
    Will they fit after some fender trimming ?

  15. Dude couldn’t have visualized it better ‘ fucken the man dude thanks so much for all these bad ass videos !

  16. Thanks for the video…never understood until today about why going backwards my tire rubs. Fortunately, I dont have to aggressive of a tread so it rubs vs rips

  17. Fuel Assault 20×9 with 285/60R20 fit on an f150 2015 with the 2in level kit?

    Or 22/10 with 275/55R22 Nitto ridge tires on both. Or what are biggest tires I could use without cutting or buying a bigger lift?

  18. I have 305 65r18 BFKO2 running on fuel octanes with a -1 offset on a GMC Sierra 1500 with a 5 inch lift. Thinking about going up to 325 65r18 but not 100% sure if they’ll be no rubbing. What’s your opinion?

  19. Tell these kids you're explaining this shit to, to save there lunch money and mow some lawns and buy the right size lift they need to run there 22×14 moto metals.

  20. Shawn, I have 3" keys on a 2002 Silverado. I have been looking at the OEM 176 wheels 20×9 and the 20×12 Fuel Mavericks. Could I fit either of these with 305/55's or 33/12.50's without having to trim or do a normal mod?

  21. So bigger the wheel and tire less economical, how about smaller the tire then it should be more economical. And just a question what about the speedometer and odometer? My stock wheel is 235/55/18 so can I change my wheel and tire to 215/40/18 ?

  22. Great info bro, Love the football throw you added! Speaking from experience with adding larger tires, and as you already know, the biggest surprise people have by adding larger tires is they don't realize how its going to effect their fuel mileage!! Most don't care but after time that cost adds up quickly. Especially when they only have a 1/2 ton, power to the ground quickly decreases too.

  23. So glad you showed the example of the stock wheel with mud tires. Thats what im going to run on my truck but wanted to figure out how it was going to rub. Used the gallery to find out what would fit and so on. Thanks excellent video

  24. I want to put 33” nitto ridge grapplers on some 20” fuels on my f-150. I was thinking of leveling the front 3” and the back 2”. Think I would have some rubbing with about a 1” offset. On a 2014 f-150?

  25. im struggling finding the maximum size I can use on my stock titan. I just want to come out a lil bit to justify some new flares

  26. 2017 Ram 1500 Big horn 4×4 stock with 35×12.5 17 tires on +18 offset 17×9 inch wheels and i barely rub the inner side, rear of the wheelwell at full lock. Only ever hear rubbing for a split second at that.

  27. phenomenal fitment tutorial! thanks gents! i def appreciate your channel! And the way you guys use modern tech to teach fitment is revolutionary! once i figure out what i like, i'll be placing an order soon.

  28. Watch out ya'll, Shawn broke a sweat. I'll take that over the grating sound of hearing Fuller say, "ON the youtube" again.

    On topic, I'm glad you covered this. People are so lost when it comes to wheel and tire fitment.

  29. Nice video just got some 33×12.5 on 20 x 10 rims on my 06 dodge rams mega cab work truck… I definitely have to do a little trimming what's up with some videos showing the different levels off trimming.. I don't need to cut my bumper at all but I would like to see a professional do it before I pull my grinder out and start cutting away… I'd rather pay and have it done right but no shops around me want to touch something like this

  30. Well shit! I just bought 37’s for my F250 because the key commandos said they would fit!

    Anthem 721a 20×9 -0 with 37×12.5 r20 kanati mud hogs.

  31. Didnt you know that the people watching are the actual experts, not you guys making the videos who have been doing this professionally for years. Duh

  32. Thank you guys for all of your videos! You guys are so informative and I’ve been learning a lot from you all on this channel. Keep it up and thanks again!! ✌️

  33. What's yer reliability opinion on wheel spacers.. obviously the right distributor and the right install. I load the bed of my truck pretty heavy.. I install tile for a living.. Pay load is hefty sometimes.. Do u guys recommend or…?

  34. Uh, is your silly floor diagram lifted or stock. Don’t compare apples to oranges…..duh! Allot of people are getting f**ked buying online and trusting salesmen for proper fitment, either getting less than they wanted or more than they can use.
    THE ONLY WAY TO GET PROPER FIT IS AT A WHEEL TIRE STORE OR WITH PERSONAL INFORMATION GATHERED FROM SOMEONE HAVING THE EXACT VEHICLE AS YOURS.
    It is amazing that there isn’t a database ANYWHERE for people to match wheel config with lift and vehicle when shopping for such an expensive upgrade.

  35. You need to realize each brand is not exactly the size it says. Always better to actually measure the tire. That’s your true size

  36. Y’all should do a video on actual tread width vs tire width A 265 is 10.4 wide but the tread is only 7 to 9 depending on the tire so maybe y’all could do a video telling us what tires will have the widest tread width vs tire width

  37. As a mechanic I love this new fad of running stupid looking offsets because I know I'll be changing front hub assemblies for the foreseeable future.

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