- What size tire can I fit?
Combined with what size lift?
And, how much trimming am I going to have to do,
to fit them on, my 5th Gen Toyota 4Runner?
(rock music)
Hey, what's up guys?
Josh from TrailBuilt.
From 2010 and still being built to this day,
the 5th Gen Toyota 4Runner has become a staple
in the overlanding and offroading community.
And upgrading to a larger size tire can take
quite a bit of research,
just to figure out what fits and what doesn't.
Fortunately, in today's video,
we're going to answer all of that for you.
We'll start by going over what the largest size tire is
that you can fit on the 5th Gen 4Runner's,
stock suspension, without any trimming.
Then we'll take a look at how big of a tire you can go with,
if you did some minor trimming.
And then we'll look at different sized tires
that fit different size lifts.
From a leveling kit, up to, about
3 inches of suspension lift.
We'll also dive a little bit into wheel sizes
and offsets needed.
Plus, different types of modifications to
do to your 5th Gen T4R,
to fit certain sizes of larger tires,
without having to install a super huge lift.
And, of course guys; keep in mind
that regardless of the size of tire
you end up choosing to go with;
that we have a massive inventory of tires and wheels,
that can be found right on our website at
TrailBuiltOffroad.
Or to make it easy, by clicking the link
in the description below.
Beginning with the 4Runner
stock suspension and stock wheel offset,
the largest tire that'll fit
without any rubbing or trimming, is going to be a 275/70
on a 17 inch wheel.
Which is just over a 32 inch tall tire,
by about 10.8 inches wide.
And I say "about," because tires will vary slightly
in size from one brand to another.
So just make sure to be aware
of that when you get your tires installed
even though, in this video, I might say
that a certain size tire isn't going to rub
and then you end up with a slightly larger size tire
than what it's actually labeled as, and it rubs slightly.
And it's because that variance
in size from one brand to another.
It would be great if they just made them all uniform
or in one size.
But, unfortunately they do not.
For an 18 inch wheel diameter and stock offset.
The largest tire that will fit a 5th Gen,
on stock suspension, is going to be a 275/65r18.
And for 20 inch wheels
the largest tire size is a 275/55r20.
Regardless of the wheel diameter,
as long as the offset doesn't change,
the largest tire size diameter that fits on a stock 4Runner
is about 32.2 inches or so;
at about 11 inches wide or less.
Now, all of those tires will fit
without any modifications or trimming;
even at full flex and lock-to-lock steering
with the stock suspension on your 4Runner.
Where you start to have to do some fender trimming,
a little push back, on the inner fender liner,
and even removing the mud flaps;
are when you get about a 285/70r17,
or about a 32 1/2 inch tall tire.
On stock offset wheels.
or a 285/65, on an 18 inch wheel
and a 285/55 on a 20 inch wheel.
Again, regardless of the wheel size diameter
once you get to about a 32 1/2 tall tire,
it's going to rub slightly somewhere.
With a stock suspension and wheels with a factory offset.
If you didn't want to perform any trimming
or inner fender mods, plus wanted to keep your
mud flaps intact;
then with 285/70s, you'll need to have at least 2 inches
of a leveling kit installed to clear those tires.
And even then if it's a larger 285/70,
where the tire might be closer to,
like, a 33 inch tall tire;
even with a 2 inch leveling kit,
you still might have to push the Inner Liner back slightly,
or even perform some minor fender trimming.
And, you still might have to remove the mud flaps.
So, again, just be conscious that those mods may still end
up having to be done, after you get your tires installed
on your 4Runner, after you know
what the true size of the tire ends up being.
To fit a true 33 inch tall tire, or even if it measures less
than a 33 1/2 inch tall tire, and is still less
than 11 inches wide on wheels;
that have the factory offset;
which, I'll touch base on the wheel offset sizes shortly.
But a 3 inch suspension lift is necessary to
avoid major trimming.
Although, there still might be some
minor adjustments to fit the 33s.
With a 3 inch lift, any tire larger than 33 1/2 inches tall
and over 11 inches wide, which is about a 285/75
on a 17 inch wheel.
And a body mount chop may, and probably will,
have to be performed.
The outer half of the body mount, that sits right
behind the front tires, will interfere with the tires
while turning full lock to lock.
Especially when you're off road cycling
the suspension on an obstacle.
What guys will do is, they'll trim off the ends
of the body mounts from the rubber bushings and outwards,
and then weld in a 'fill-in' piece to close off the gap.
By doing that and some other minor trimming
to the front of the fenders, pushing back the Inner Liners,
a bit, and removing the mud flaps.
You'll be able to fit a 285/75r17, with a 3 inch lift.
or even a 295/70;
or again, a 33 1/2 inch tall tire,
up to about a 34 inch tall tire.
If it's closer to a 34 inch tall tire, though,
with a 3 inch lift, expect to get
a little bit more aggressive with the trimming.
And you'll also have to either trim or remove the
Rocker panel End Caps behind the front tires as well.
Another option, or alternative, to possibly not
having to perform a body mount chop and run a 295/70r17
or about a 33 inch tall tire by about 11 1/2 inches wide,
is to purchase adjustable upper control arms.
This way you're able to have the option
of adjusting the caster angles slightly.
Which ends up bringing the front tires forward slightly.
In most cases enough that it'll clear the body mounts
on full lock to lock turns.
There is a lot more technical information
that goes into adjusting the caster angles to
get the positive caster just right.
So doing it that way may depend on your level of hands
on experience with installing suspension components.
If you're not comfortable with that level
of modifications, to either replace the upper control arms
or perform a body mount chop,
then the options would be to either:
have somebody do it for you
or install a taller suspension lift;
or even a smaller size tire.
And now that we're starting to get
into the taller and wider size tires
another measurement that we'll need to adjust for,
is the width of the tire
and the additional clearance we'll need
for it to clear the upper control arms.
The best way to do this is
by running a new wheel with less positive offset.
Most of the 5th Gen 4s, excluding the TRD pros,
run a positive 15 millimeter offset
for us to push the tire wheel out
away from the upper control arms.
We're going to want to lower that offset number.
Which, in fact, increases the negative offset.
The more negative offset there is the more the tire
and wheel get pushed out away from the vehicle.
For example, a lot of 4Runner owners
will upgrade their wheels to the 4Runner TRD Pro wheels,
because it has an offset of positive 4,
instead of the factory positive 15 offset.
And that pushes the wheel outwards 12 millimeters,
or about a 1/2 an inch.
Here's the caveat though.
The more we push the tire end wheel outwards,
the more it's going to rub on the Inner Liner,
Fender Rocker End Caps, and the body mount,
while turning full lock to lock.
Pushing the tire outwards gives it a greater
and longer turning curve of the outside edge
of the tire; while turning and enlarging
that curve sets, a collision course
with the Rocker End Caps, the body mounts,
and the front of the fenders, et cetera, et cetera.
Plus, we have a larger tire that's wider
and that just compounds the issue.
This is why, many 5th Gen owners will end up
running a narrower size tire, like a 255/80r17.
Which is just over a 33 inch tall tire by 10 inches wide.
So they can get the height out of the tire,
for more ground clearance,
and still be able to run stock 4Runner wheels.
Paired with a 2 inch leveling lift or even a 3 inch lift,
and barely have to do any, if any at all,
clearing for the tire to not have any rubbing.
So, even after all of that information
we just went through;
if you're still not sure what size tire you want to go with,
another really great resource to use, on our website
at TrailBuilt Offroad, is our fitment gallery.
When you search for your year 4Runner, it will show you all
of the, 4Runners with different size tires
different wheel offsets, different sizes, suspension lifts.
And from there, you'll be able to determine
what works best for you.
And we'll have our fitment gallery linked
in the description right below me.
Or even if you already have your 4Runner all set up
and dialed in, you can add it to the gallery
with as many photos as possible.
Along with a detailed description
of what was all done to it.
And that way, not only will you get to show it off,
but you'll also get to help out anyone else who is looking
for a similar setup as yours.
But, what I'd really love to hear, from all of you guys
that have a 5th Gen 4Runner who already have it modified
with larger tires, is what size combination of wheel tire
and lift do you have?
Did you have to do any trimming?
If so, was it major trimming?
And what was all done to it?
Would be great to hear back from all of you guys,
by letting us know in the comments below.
Either way, guys, I hope this video has helped you out
in one way or another.
And remember: wheels, tires, suspension, and accessories
TrailBuiltOffroad.com.
Don't forget to hit that subscribe button.
And guys, as always, we appreciate
all of you for watching and all of your support.
I'm Josh from TrailBuilt and we'll see you guys,
out on the trails.
(upbeat music)