Alignment with SPC UCA

Drove some more today it’s a little better
I ordered 1.25 inch spacers

hoping this will help with uneven/ sides wearing too

 

@splitbolt I know I’ve used all my “ask splitbolt points” but I just lost my job my 2stroke ski needs work and now the truck. With your knowledge do you think spacers will help with uneven tire wear?

 

Man, I'm sorry to here about your job.
So, I will try to convince you spending money on spacers is something to consider.

It will certainly help. You're heavily modified and have a lot going on.

Here is a graphic of what's happening with the negative scrub and my recommendation of a wheel spacer. This would be a front view of the passenger side.
Tire height alone gave you negative 15mm of scrub(red). This is where my original 3/4" spacer recommendation came from.
The increased SAI increases negative scrub a bit more(green). You'd have to due some measuring and trigonometry to get a good idea exactly how much. You might assume I figured 3/4" based on my 1.25" spacer recommendation. It was more or less, because 1.25" is a popular size and even if it gave you positive scrub it shouldn't be significant. It's better to have positive scrub than zero or negative scrub, on a rwd wehicle.



It would have been preferable to see the old tires for a complete picture.
The outer edge scuffing on your new ones are quite pronounced.
This looks like camber change due to higher caster and/or non compliance due to the narrow wheel/wide tire combo.
What are the majority of your miles? Highway? City? Straight? Lots of turning?

 

really appreciate the feedback. My duratracs wore like crazy on the inside to the point where the outside tread looked almost new and the inside tread was basically drag radials.

my driving depends typically it’s city with some turns. But then I do a long road trip with a few 100 miles every couple months. I offroad probably one or two weekends out of the month.

I ordered 1.25 spidertrax earlier

again I really appreciate your feedback and going the extra mile. My knowledge ends at life insurance and video games.

 

Okay, inside shoulder...
Your new toe alignment should help that.

Spacers are going to help the twitchiness.

As far as your general pull to the right, I believe that has to due with the greater SAI on the driver side creating a greater moment across the tire laterally, causing it to toe in. The unequal SAI is something I've noticed with SPC alignment sheets. The cross SAI is 0.9 before and 1.6 after. Assuming identical adjustments to the SPCs during your alignment it's picking up 0.7 in cross SAI, either through slop or dis-similar geometry in the arms.