2013 3 inch suspension questions

I know he got it right, i meant that a common misconception is adding caster will move the wheel foward and help eliminate rubbing. I think you actually explained that to me, so haha.

Maybe i should have phrased it differently because i was agreeing with him. It is easily confused that UCAs will help eliminate rubbing or make it less severe. For example someone has rubbing issues, someone else says you need more caster. But more caster at the UCA may make it worse, more caster at the LCA should move the wheel foward

 

OK

 

So you're saying the added UCA with the icon suspension will move te wheel back... But I I get 285/75/16's that have a back spacing of 5 or more... Ill be okay?

 

With no mud flaps... And maybe A LITTLE trimming

 

Don't count on that. Maybe just a little trimming, but just saying be prepared to cut if you go with 285s.

 

The most common BS for those running 285/75/16s is 4.5" (lower the # the farther they stick out). 285/75/16s will rub if you off road (& often even if you stay on road) Trimming can vary from a little to a lot & passably a CMC&C will be needed.

 

Okay... Sorry for not knowing so much and thank you for walking through it with me

I realize the bigger the tire is a better look and clearance... But would there be any con to going to maybe a 285/65/16 or a 275/75/16 (or a tire closer to that so the height is reduced but not the width so much)... Or is it the width of the tire that rubs?

 

Its a little bit of both when it comes to rubbing. But you can run a skinny tall tire with less rubbing that a wide, not as tall tire. You should read up on tire sizes, you might be confused. The first number (285,275,265,255) is the width of the tire. The second number refers to the height of the sidewall, or the sidewall aspect ratio, its a ratio though so its relative to the width. And the 3rd number is wheel size obviously. So a 285/75/16 is pretty much the same as 285/70/17, about 32.6" x 11.25. A 285/75/17 is closer to 34". A tall skinny tire would be 255/85/16 or 33.3" X 10" roughly.

 

I know tire sizes haha I was just curious if there is a combo that is better fit for that type of suspension that would allow Minimul trimming.

I've read that people go with 32's and are fine... But what's the reason for a 33 inch? Just bigger and clearance? Or more generic and cheaper?

 

Do I want back spacing lower than 4.5 or higher than?

 

Sorry i misread your previous post, i thought you had the sizes mixed up. One of the reasons they rub is the offset (how far they wheels tires stick out) needed to fit 285s. The other reason is just they are a little wider and a little taller so they rub in places 265/75/16s would not. On stock wheels 285/75/16s will rub the UCA at full lock, if you let them rub it will eventually ruin your tire. So to solve this you need spacers or a wheel with less offset than stock. That pushes the wheel/tire farther out. The farther out the tire is the larger the radius is which the tire pivots on when you turn...if that makes sense, so simply put, farther the tire sticks out due to offset and width the more likely you are to rub, but also the larger the diameter of the tire is the more likely you are to rub. Alot of people go with 265/75/16 because there will be less trimming, less rolling resistance so better mpg. I personally went with 285s for more clearance and because i like the look of them. Just to give you a idea, and why i am saying don't go 285s unless your willing to cut heres what i had to do:
I have ~ 2.5" of lift up front with light racing UCAs, caster is at about 2.7*, my wheels are -10 offset, 4.3 backspacing (8.5" wide") tires are 285/70/17
During normal driving, just to eliminate rubbing on the street i had to cut away a good amout of plastic from the inner wheel well, trim the bottom of the fender flare in back, cut the cab mount back a good amount. When i flexed the suspension out i realized i had to cut the very bottom of the fender flare up front, and a little more off the bottom of the fender flare in the rear of the wheel well.

Depends on the wheel width, generally 4.5 is good, if its a 9" wheel you don't want to be much higher. Offset and backspacing are directly related but wheel width also determines backspacing. 285s require 0 or less offset and you don't want to go less than -12

 

Okay makes sense... the reason for offset and backspacing is to eliminate the rubbing on any of the suspension, that way you wont damage the tires or suspension and put yourself out thousands.

The reason for bigger tires (285/75 or 275/75) are for the looks and the added bit of clearance.

The combination of the back spacing, offset, and bigger tires calls for you to shave some of the flares and cab mounts so that during articulation and turning, the tire will not rub any component of the car and everything is clean.

So in my case, if i were to go with a 275/70/16 or a 265/75/16 (pretty much the same tire) of a "beefier" look than the stock 265/70/16, a rim that has a back spacing of between 4.00 and 5.00 (closest to 4.5 as possible), on a Icon stage 3 or 4 suspension, i would have no or minimal rubbing, not have to chop the cab mount, and if anything, i would have to maybe shave a little of the fenders and hammer a little back?

 

if you went with 265 i think your backspacing can be as high as 5.5". But 4.5" looks nice, widens then stance of the truck and looks more aggressive. Other than that it looks like you have it figured out to me. Theres always a chance rubbing wont be major with 285s but you cant count on it, especially if you offroad. So i think 275s or 265s are a good choice.

 

Okay perfect! thank you for all the support and help.

Ill prob go with 4.5 or lower cause i do like the stance look, on 265 or 275s especially with a beefier tire it should make up for the lack in height.

Because i might be getting TC after market gussets and doing a sway bar removal, ill definitely go with the 265's or 275's

 

Nice, post some pictures when you get it. The icon stage 3 or 4 kit will be awesome, good luck.

 

Will do
thanks

 

Yes, please do post picture with the lift.. I am doing a very similar build to my taco.

 

Hey man, more than welcome to come check out the truck anytime you want.

 

Yes it's the width. 285/75/16s are 32.6" & rub until you trim (& possibly do a CMC&C).
My 255/85/16s are 33.3" don't rub, required no trimming & I can still run with mud flaps.

255/85/16s on a 16"x7" wheel with 4.5" to 5.25" BS