Stock size tires but 1" wider wheels (17x8).

Before spacer.


After 1.25 spacer.


I did have too do the front fender mod and trim part of the mudflap. Both were very simple fixes and done with household tools. And the side of your 4R will see more road spatter.

Any way we can get better pics? maybe outside from a distance, I got a 15 LE and have been thinking about adding these, I added them to my Rubicon a few years ago with no problems. I just like to see them with OEM Tires, thanks. Oh ya you miss that S4 yet? I sold my 2007 B7 S4 a few years ago and just picked up another one in real nice condition/ one owner on the cheap. I wanted a RS4 but still waiting for the prices to go down a bit more.

I do not know if any of these will help:

After Spidertraxx:

Yeah i'll try and get some better pictures. I do miss the S4 but not as much as I thought, I fell out of love with it as soon as I saw the new BMW M3/4's.

I'm actually really enjoying DD'ing my Tundra. I still plan on picking up another sports car in a couple years but something much more dedicated to summer. I really liked the versatility of the S4, but I think i'm always going to keep a truck for winter/hauling duties so it is a waste to have a 4DR AWD car.

I am new to all these, sorry for my ignorance, what do "spacer" do?

Sets your wheels out further from the axle. It has nothing to do with function (performance) and everything to do with form (looks).

Thanks!

Oh, so it makes wheel-to-wheel "wider"? Will it affect any drive-ability? Stability?

Sport cars has wider tires which in turn make the car wider....

Marginally, if at all. It will increase bearing loads and could cause premature failure of those bearings. It's all about the look.

Sports cars have a low center of gravity which lets them handle a curve better which means wider tires are needed. Chicken-egg thing. Low CG means better handling which needs wider tires. NOT wider tires need better handling which means lower CG.

I've read in Antman's thread that installing spacers gave him a perceived improvement in stability - specifically the wandering the vehicle tends to do during highway driving... Please note I said perceived... I was hoping for the same effect, it is the only thing I don't like about how the vehicle performs.
I actually turned down a TRD Pro because it had far more of the wander at highway speeds than a Trail with KDSS did.
Has anyone experienced the same effect?

2014 TE with stock wheels and 1.25" Spidertraxx spacers and 265/70/17 Duratracs..love it

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But doesn't the vehicles' tracking width play directly into the lateral CG calculation? Tires wider out = more weight/force needed to get the lateral lever action to act on the vehicle, right? (More change in direction would be needed to "roll" a truck with a wider stance vs one with a narrower stance all else equal including the actual tire width/contact patch).

(I'm obviously not up to speed on the proper nomenclature here, but I believe you get the just of what I'm saying)

Grated, we're only widening the stance by 2.5" total with 1.25" Spidertrax, but that isn't insignificant from what I gather (what is 2.5" based off percentage of stock tracking width? I'd bet it is statistically significant). I also perceived an un-scientificly proven improvement with the Spidertrax with regard to 75MPH freeway handling (lane changes, etc). But ditching the stock tires and ading 5100's likely had much more of an improvement (duh!)...

I gave it a "marginally" lol. Sure, 2 1/2 inches will help but in the greater scheme of things not much as this vehicle is not pushing the ragged edge of handling a turn or skidding out. It definitely won't help with any lean. My son did a project last semester (Junior - BSME)and it was trip force required to overturn a vehicle. He used the 4Runner for his vehicle and I know he had lateral forces involved and track with also. If he still has it I will ask him to run a simulation with the width a bit wider and see if that changes any of the cornering speeds by much. I really don't want to tackle that math anymore!

It's roughly a 4% increase in track width, depending where you measure to & from. Remember that there is a lot of sidewall on these tires that will flex very dynamically as you approach limit. Someone should have a track day and measure cornering Gs with and without spacers (you now can't clip the corner by that 1.25"...is it worth it).

Sounds about right. "Stock" track = 63.2". 2.5" is like 3.9%, and brings total track width to 65.7".

Stock sized BFG KO's likely add another ~ .5" to the track width, too beyond stock tires (if this is taking into account the outer edge of the tire's contact patch, and not just the outer width of the wheels themselves)... The BFG KO's would probably exhibit less sidewall flex, and maintain the track width a bit better than the stock tires in evasive maneuvers IMO...

Lol - Good point on negating the ability to clip an apex by 1.25" I was thinking more of avoiding a rollover in an evasive maneuver - but that works too

Should be measured to center of contact patch.