Got what I needed.

 

1/8 is like .125

I used Google to figure it out and. Then aligned as is

 

No matter how many times I align my car it pulls right. I'm starting to get annoyed by it. You guys think a degree difference in caster will cause a pulling?

 

My right side caster was off last time I got an alignment, tech told me it would pull to the right. Road crown tends to pull to the right anyway. I have been concidering doing spl bushing on the compression arms to help compensate. There are a couple of uca's that can adjust for caster. My overall plan is if the spl compression bushing doesn't fix the caster I want to go with the voodoo13 uca and adjust out there.

 

I can fix the caster with my Z1 arms but it's getting old taking them off to adjust over and over. I'm thinking that's my last choice but I'll wait till I get a brand new set of tires and align on that.

I've tried so many adjustments either no luck otherwise. Street pull is normal but on the freeway it should be straight as a arrow and it's not

 

I found this thread, and thought i would post here instead of making a new one. My Z is a full dedicated track car. However since my last alignment for some reason my front tires the inside is wearing at an incredibly fast rate! Just to explain better, I put 4 brand new NT01's on the car, I did 2 track days! which is usually 4 sessions a day 20 min each. Now the 2 insides of my front tires are done! already almost flat with the little wear holes, all tread is gone! I think if I was to use them 1 more day it would be down to the cords in the insides. The outsides are great and the rears are perfect. But I cannot have this keep up I need the tires to lat more then 2 day. Below are the specs of my last alignment. Does anyone have any ideas for me? I was going to have the car setup a corner balanced by a race shop here, but want to first see if anyone has any ideas why I am having this?

 

Excessive camber shouldnt be the problem, but your previous toe did look way off, maybe look at your tie rods? Assume you are towing and not driving it to and from the track?

What are your spring rates, and what sway bars are you running? Can you post a pic of the tires?

 

The toe and other stuff was off because I changed control arms and ride height then took it for an alignment.

Yes, it only gets driven on the track and on a trailer to and from.

I recently changed my tie rod end boots and checked them, they seemed fine. I will however maybe check both inner and outer again this weekend. The tire wear is not just the inside edge, its about 3 inches or so of the entire inside front tires. I will take a picture this weekend, if I was to put a ruler up to the tire flat, it would not sit flat due to how much inside rubber is worn away. I think it possibly is because my ride height is to low also and I should raise it more. I am temporarily running low end BC BR coilovers with what I think are 10k front and 8k rear springs. Also hotchicks front and rear sways...

 

Your wear definitely seems abnormal given your setup, I would definitely check those parts. What is your ride height? What control arms are you running?

And if you run PBIR a lot your tires are going to wear a little faster than normal. Though I will say if you are setup properly our platform usually has above average tire wear.

 

I am very low, too low and will be raising it before I bring it for alignment and corner balance. I don't know how low in inches, but front wheel is definitely to far in the fender. I have Kinetix front arms, NOT modified, so you can see with my height how much negative camber I was able to get with it. I have a new set of Z1 control arms I am going to be installing too before my alignment.

i will check my tie rods, hell I might even replace both inner and outer anyway.... I HATE PBIR! I am an hour away from it and avoid it as much as possible. Very boring track.

 

Lol I agree about PBIR for sure. You are probably too low, measure your suspension travel and set it based on shock travel first...youll probably end up somewhere between 25.5-26" from ground to fender after you set it all up if you are running 18s.

 

Yeah I am running 18s... I should leave 2-3 inches of shock travel ideally I assume?

 

Set the shock travel with the springs off so you hit the stops right before you rub. Then set your ride height using spring length and preload so you stay off the stops on track. That height will depend on your spring rates, setup etc.

 

I read that a few times and somehow don't understand how I could set the shock travel with the springs off? especially the rear! I also didn't make time to take my wheels off today, but I did measure my height from the ground to the fender, the front was 25" and the rear was 26".

 

You do it by adjusting the shock body length (start at manufacturers specs, they are usually a good startig point), putting the tire on, and then jacking it up into the wheel well and measuring the max piston travel when the wheel starts to rub the fender. Then make the body shorter or longer to either increase or decrease the travel so the damper hits the bump stop right before the wheel rubs. That represents your maximum piston stroke for your given wheel/tire, fender and geometry combo.

 

I am bumping this thread back up again.... All components on my front end are good my car is now at a good ride height and my front tires are still wearing horrible on the insides. I now have a square setup, 275/35/18 Toyo RRs all around, and i even rotate them in an X pattern after every event. I did my 4th event on the tires that were new, and now my 2 fronts are nearly gone on the inside, however the driver side is worse and down to the cords on the front inside. I don't know what else to do but now replacing tires every 4 events is not fun!

 

Is your alignment the same as it was above? You may want to have it re-checked. What is a good ride height?

Can you post a picture of the wear? Ive never had bad tire wear on this platform even when I had stock arms...you should be running more than 2.6deg camber on RRs.

What brand tie rods did you use?

 

No, I had it done last time in November, and here is the specs of it I just found. I had it done at Apex Alignment if you have heard of it.. He told me at the time he purposely did the driver front spec different since most my tracks around here are left turns or right turns? whatever would make sense with it for more on the left?.... Personally, I do not like that, and will likely go back. I think maybe I should have the camber brought to 2.7 or 2.8 on both fronts? Maybe? As for my height, the last I set it front was at 25" and rear was 26" from ground to fender because I thought I should keep some rake to it (does that still seem to low?... However I do notice for some reason my driver side front is sitting a little lower than the rest of the car. (it had not been corner balanced). Even if the driver side with more camber and being a hair bit lower caused that front tire to just start to show the cords, the other front barley

is much better, yes there are no cords showing, but i am not sure it would last a few more sessions without it to start?

I used Moog tire rod ends.

 

I know Apex, he knows what he is doing. Alignment looks fine except normally you want to run over 3 camber at both fronts with a slick like the RR.

Ive never had an issue with tire wear, even when I ran stock arms and less sticky rubber. You will usually see evidence of minor inside wear on slicks with aggressive track alignments, but as long as the majority of the tire is wearing evenly you should be fine.

Get it re-checked...and give your front end bushings and tie rods a very good look. And post a pic of the tires if you can.

 

Yeah, I just don't get it! I never had a problem with other cars wearing so uneven. I spent 30 minutes under the car this weekend checking the tie rods, a lot of that time spent I was just staring at them and thinking what can this be, but the tie rods are fine, wheel bearing is fine, and bushings are fine too which are all Energy suspension and even my ball joints are new. I am thinking to raise the car? but really don't want to if I don't need to.

I will take pics of the tires and post them in a day or two.... I am in the meantime considering replacing just 2 tires, since 2 others are ok and still have life after 4 days, I know its not ideal to mix new and used, but I am thinking to do it and put the new on the rear.