why do all celicas rear wheels butterfly?

[nubreed]

i lowered my car with progress springs and got an alignment and there is still a hint of butterfly showing. i thought it was just my car but i checked even the stock height celicas and they all butterfly as much or worse than my car does, is this supposed to butterfly like that or does celicas have a suspension problem

[Kit99bar]

I am not considered a celica expert but I have to venture a guess that this statement is probably not true

Originally posted by nubreed
or does celicas have a suspension problem

[gts24]

Kinda seems like it may be a slight problem on some cars. I watched a guy going down the hi-way in a stock gt-s and he had 2 passengers, 1 front 1 rear and I thought he had it lowered or messed up his alignment or something but nope just stock and the sucker was bowed out badly on the side the passenger was one.... not sure if it was also loaded down with other crap in the trunk...

[HeavensWarrior]

I believe yu are referring to the camber of the rear wheels. It is like that to improve handling even my friends comment on the camber of the rear. It helps in cornering.

[nxracer]

The "butterfly" you are seeing is actually negative camber and it's supposed to be like that.

If I remember correctly the rear camber spec for 00+ Celica's (GT & GT-S) is -0.8 to -1.3 degrees

I have my rears set at -1.5 degrees and see no adverse tire wear.

[TRDNiteLife]

After you lower your car thats the camber adjustment you'll notice. It's supposed to be like that. If you watch Speedvision the the GT series cars have their wheels like that too. The cool thing is when you get bigger wheels you'll see the lean even more. It's a race style suspension.

[Timmy~GTS]

Since noone explained to you why it's like that I'll try. ;)

In any situation it is best for your car to have 0 camber, meaning perpindicular to the road. This maximizes tire surface area contact thus maximizing traction. But the problem is that a suspension is dynamic and isn't going to hold the same camber through a corner as it is being pushed in towards the road from the force of the turn. This means that since your tires are going to be gaining positive camber in the corner that you should dial in negative camber to compensate for it. The stock settings are for daily driving where most turns are lower speed through traffic lights and such. Race suspensions will have more negative camber when the course has tighter high speed turns in order to get as close to an average of 0 camber through the turns for best traction. Since 0 camber provides best traction, that is why you will see drag cars with 0 camber initially as they do not have to worry about turning at all. But our cars have slightly negative camber to compensate for average turns we see during daily driving. It's bad to have too much camber on a daily driver as you will see alot of tire wear on the part of the tire that has the most contact, so unless you know what you're doing the stock settings are best.

[t2000gts]

TRDNiteLife: your car looks how i want mine to look someday! :) what kind of sideskirts are those, can't see too clearly, and what do you have on the rear?

[TRDNiteLife]

Originally posted by t2000gts
TRDNiteLife: your car looks how i want mine to look someday! :) what kind of sideskirts are those, can't see too clearly, and what do you have on the rear?

I have the TRD front, sides and rear.