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Thanks again. What do you think of these before and after readings on my alignment settings? I may need to make further adjustments, but it is a starting point. I mostly autocross with the occasional track day, and the car has felt a little loose to me in the past. I have an autocross event on 5/16 so I'm hoping these new settings will make a positive difference.
I don't care for the toe out up front. Rather it be 0.08 instead of -0.08. And i think 0.28 total toe in rear is too much as well. Would prefer no more than 0.14 total.
I don't care for the toe out up front. Rather it be 0.08 instead of -0.08. And i think 0.28 total toe in rear is too much as well. Would prefer no more than 0.14 total.
Thanks for the feedback. What are the negative effects of those toe settings?
Thanks for the feedback. What are the negative effects of those toe settings?
The front toe is a little out and will make the turn in very quick. The rear toe is only about 1/16 inch per side and even with syphericals you need 1/8 inch per side. (1/4 inch or 0.561705 degrees total toe). With standard suspension you'll need even more. I'm running 0.63 degrees total toe in the rear with my T1 A arms. Set up the way it is this car is going to be loose on a road course, maybe OK for autocross.
great street/autocross alignment. tires will warm up quick with that camber and the slight toe out really speeds up turn in. good if you like a responsive car. i use to run similar numbers when i raced more. now i'm closer to 0 or .02 in up front just for the stability
you're going to get a small amount of edge wear with those numbers but it shouldn't be excessive.
The front toe is a little out and will make the turn in very quick. The rear toe is only about 1/16 inch per side and even with syphericals you need 1/8 inch per side. (1/4 inch or 0.561705 degrees total toe). With standard suspension you'll need even more. I'm running 0.63 degrees total toe in the rear with my T1 A arms. Set up the way it is this car is going to be loose on a road course, maybe OK for autocross.
totally agree, but as you point out, that fast turn in isn't really ideal for a high speed road course either.
this is a total street/autocross alignment that's going to be nimble and quick under 70-80mph
quarter inch or more of toe in out back while common for road racing would really scrub the tires on the street too
totally agree, but as you point out, that fast turn in isn't really ideal for a high speed road course either.
this is a total street/autocross alignment that's going to be nimble and quick under 70-80mph
quarter inch or more of toe in out back while common for road racing would really scrub the tires on the street too
I'm using 0 toe in front too. Like so many things, it isn't often you can have your cake and eat it too. What works for the track won't work well for the street.
Thanks for the info. Since I don't have a dedicated track car, I was trying to find a decent compromise between something that would give me good autocross performance plus something that would be acceptable on the street. I probably won't be able to do any track days this year, so street/autox was my priority. I'm curious to see how the car performs this weekend. I wasn't very happy with the previous alignment settings. The car felt fairly loose and was not as responsive as I would have liked during autox.
It looks good to me. The way I read my chart the rear toe is right around 3/32 total. .14 is right around 3/64 and .12 approximates the same for a total of 6/64 . Your thrust angle is really good which means you can get a good drive off corners either way.
If you're driving the car on the street as well you will have a more front tire wear due to the toe out.
What I do is run a bit of toe in (1/8 total toe in) on the street, but I mark the front tie rods with a stripe of paint that goes across the tie rod and onto the tie rod end.
When I get to the event I go one full turn towards toe out and that gives me nice turn in and about 1/8 total toe out.
What I would do is mark your tie rods and then turn it one turn towards toe in for the street.
Running toe out is what really eats tires, you can run a lot of negative camber and it really doesn't eat tires too badly, but toe out is nasty as far as tire wear goes.
I'm using 0 toe in front too. Like so many things, it isn't often you can have your cake and eat it too. What works for the track won't work well for the street.
