Tires are worn on the Inside Edges

[Lee12609]

I am fully aware of how caster camber and toe effect tires I'm telling you it's a toe issue mainly could also be camber but the way the tread is in that pic it's a toe issue. If it had that much negative camber to only wear the edge like that, the inside of the tire would rub on the shock.

the tire will NEVER hit the shock/strut unless the spindle or strut was bent. i had -4.5? camber the other day with no rub. (this was after lowering the front 2" and installing cam bolts, i dropped camber all the way in just to see how much adjustment i had)...

 

[orodi]

HAHA I wasn't even thinking thinking about that part sorry I was just thinking tire not strut.

 

[Lee12609]

+1 RWD vehicles will automatically force the front tires apart due to "pushing" from the rear. Just like a FWD car will want to pull the front tires inwards as it travels forward. There should be negative toe on a RWD car when it's sitting still because as it drives it will self correct.

Also this isn't true, it depends if its a front mounted rack or rear. Basically if tie rods are in front or rear of spindle, also front end lift on acceleration plays a big role.

 

[duff daddy]

also front end lift on acceleration plays a big role.

I got some of that!!!!!

 

[Lee12609]

also front end lift on acceleration plays a big role.

I got some of that!!!!!

Me 2s.... I hang tire at anything over 2% throttle, I added rear wheel steering and an irs just so I could drive!!!

 

[duff daddy]

good thinking

 

[orodi]

Also this isn't true, it depends if its a front mounted rack or rear. Basically if tie rods are in front or rear of spindle, also front end lift on acceleration plays a big role.
[/quote]

I doesn't matter where the steering rack is, it is simple science. Are you planning on following me and trying to pick apart ALL my posts? I do not care that you are a mechanic. I will stake my 3.8 GPA in High performance Auto mechanics, which covers both general auto and High performance that I know what I am talking about. I made one slip and addmitted that but as far as everything you have already tried to pick me apart on I have backed up my opinions with simple facts. I am here working for a company and instead of just sitting in my own section of the forum I chose to help other members with issues and give opinions as there are times I will need them as well.

 

[Lee12609]

when the tie rods are mounted forward of the spindle on acceleration the front end lifts, pulling the front of the tires INWARD (negative toe)

when the tie rods are mounted rearward of the spindle on acceleration the front end lifts, pulling the front tires OUTWARD (positive toe).

i am not following you around the forum (paranoid much)... i do this ANYTIME i see incorrect info, especially when posted by a sponsor or moderator, since most uneducated members will trust what they say more often than someone else correct info needs to be posted for the FUTURE readers that might not know who is right or wrong.

 

[orodi]

Not paranoid you just said you look at moderators and sponsors posts. You seem to want to TRY and pick apart my posts so here try picking this apart. Go back, read what I typed. Did I say anything about acceleration? Driving down the road I don't care if there are tie rod in the front and back of the tire SCIENCE and everything you can read will tell you that a RWD car AT ANY POINT OF DRIVING is "pushing". Therefore the forces applied to the front tires will actually try to force the the tires apart. So would you like to try that again? Since some one uneducated as you stated might read this?

 

[orodi]

You throw in things that I am not saying which in turn after I respond makes you look like and idiot. So if you would like to continue your "monitoring of incorrect info perhaps you should read what is being typed and respond according to what is actually being said. Also to further my point of "CORRECT" information. "When the geometric center and the thrust line of a RWD vehicle are in alignment the end result of the forces applied from the rear drive tires to the front tires of the vehicle will want to force the leading edges of the tires in an outward direction. This is why a small degree of negative toe is added" Classroom manual Automotive Steering and Suspension systems pg. 373. "...FWD cars will apply force in such a way as to try and rotate the engine in the car in a forward direction thus pulling the tires inwards." Classroom manual Automotive Steering and Suspension systems pg. 375. Would you like me to go into anything else?
I am not going to post things on here that someone who doesn't know alot about cars will go and try without either knowing what I am talking about or doing my research. If I am unsure which we all are at some point I will add things like "I belive" or "I am not totally sure". I know there are alot of people that want to do things with thier vehicles and do not know the best way to go about it or do not understand what they need. I have spend hours on the phone with customers explaining what they need for a turbo system and the the supporting modifications for their particular appilication or projected use. This is something outside of my "job description" but due to the fact that I have blown up motors, spent WAY more money than I needed to and cut corners having adverse effects. If I can help someone out regardless, I feel it gives them answers I never had.

 

[MustangMoser]

when the tie rods are mounted forward of the spindle on acceleration the front end lifts, pulling the front of the tires INWARD (negative toe)

when the tie rods are mounted rearward of the spindle on acceleration the front end lifts, pulling the front tires OUTWARD (positive toe).

are you taking about lifting the tire off the pavement? I'm a technician too and I'm gonna wave the bs flag on this, if the tire is on the ground its ALWAYS gonna go toe out from being pushed, if your alignment is right at the moment.

On 3 Performance is 100% right on this.

 

[Lee12609]

when the tie rods are mounted forward of the spindle on acceleration the front end lifts, pulling the front of the tires INWARD (negative toe)

when the tie rods are mounted rearward of the spindle on acceleration the front end lifts, pulling the front tires OUTWARD (positive toe).

are you taking about lifting the tire off the pavement? I'm a technician too and I'm gonna wave the bs flag on this, if the tire is on the ground its ALWAYS gonna go toe out from being pushed, if your alignment is right at the moment.

On 3 Performance is 100% right on this.

LOL, i'm not talking about doing wheelies....

here is a scenario for you and ON3... you first have to realize that when a car is moved from a stop the weight is transferred to the rear of the car and the front end "lifts". this lift changes the lower control arm and tie rod angle correct??? essentially the same as lifting or lowering a vehicle.

now lets say you put a jack under your oil pan and lift the front of the car 1", this pulls the tie rods DOWN, which pulls the front of the tires together (positive toe)... now do the same thing to a car with tie rods mounted rearward of the spindle and the tie rods are pulled down bringing the back of the tires together (negative toe)...

for this same reason an SN95 that is lowered will exhibit negative toe....

i believe you 2 are talking about cruising and i am talking about accelerating that is where the confusion is coming from, so my fault if you are. in which case yes the front wheels are pushed rearward causing negative toe if the alignment isnt set with some amount of positive toe......

 

[MustangMoser]

Right, I cant speak for On 3, but I'm talking about just driving down the road, as that is where most of our cars spend 95% of the time.

 

[Lee12609]

Right, I cant speak for On 3, but I'm talking about just driving down the road, as that is where most of our cars spend 95% of the time.

yeah, i re-read everything and i am pretty sure that is what he meant aswell. i was speaking of taking off from a stop, thats where the confusion came in.

 

[orodi]

Yeah I am just talking about crusing down the road. I went back and read myself and we were talking about two completly different circumstances.

 

[CC'S95GT]

can we all just hug and sing kum-by-ya now.

 

[MustangMoser]

only if someone brings smores