Handling a little weird? Pulls/slips while on freeway.

[LeavingNormal]

I have the same thing happening to me, but it's always on the LA freeways once I get to a certain speed and it's always around the same areas of the freeway.

[Innova]

My BRZ does that also. You really feel the grooves in the road with this car. It was weird at first but I'm used to it now and it doesn't bother me.

[GenkiElite]

Sound like the the rear toe is out. I've had it happen on other cars of mine after lowering but it is possible to be off from the factory.

[Chewie4299]

Feels planted to me. Though I am coming most recently from a jeep wrangler so that could be a big part of it.

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[Sideways?]

I agree with GenkiElite, to me it sounds like the rear tracking may lean too far towards toe out when driving...
From looking at the suspension walkaround there are rear track control arms so it should be pretty easy for a garage to adjust... Will make it more stable going forwards but less keen to turn-in...
And always make sure your tyre pressures start off from the manual guidelines and are balanced side to side...

[Shinji2787]

Sounds like the roads. A lot of cali roads cause cars I've driven to do this.. Plus a lot of freeways have a slight slope to let rain run off to the sides. Its especially bad on the 10 between Santa Monica and LA. Anyone ever do the transitions from 2-5-110 or vise versa? How does the Frs/brz handle those wonderful bumpy sections?

[switchlanez]

If you are talking about occasional twitching of the rear end to the left or to the right while cruising on the highway, I felt that on my MkIII MR2 Spyder after I added an OEM LSD to it. You might also be feeling your LSD actively transferring power to the wheel with most grip as you tramline. It's very subtle though and could just be the wind or slight imperfections in the road.

[Moshpit37]

I just got back from a 1200 mile trip through Arkansas, Illinois, and Missouri and I definitely felt this too, but only on the newer stretches of road that had the grooves, like others have said.

[pyro530]

Originally Posted by dnL

I think the "pulling" you're describing is tramlining. I feel it some on roads that have fairly defined grooves. Seems kind of pronounced in the FR-S compared to other cars I've driven, but eh... doesn't really bother me that much.

As for the rear feeling loose, I don't feel that. Seems fine to me. The rear does feel a bit bouncier than I expected, but it doesn't feel like it's coming loose to me. I guess you could be feeling it come loose if the rear is bouncing around.

^^ This.
On the concrete sections of freeway the car really does tend to track the grooves in the freeway.
To me, this makes the car feel even more planted and connected to the driver.
Maybe you never noticed it before because you never had a car that was so tight?

[WolfsFang]

i dont feel that stuff, the only time i felt the back end a little lose is when i was around 120mph and it was a windy day.

[Spaceywilly]

Yeah when I got my WRX I was wigged out by the tramlining until a friend explained it to me. I thought something was messed up with the alignment, but it's just following the grooves in the road. Personally I prefer this to having a numb steering wheel.

[azian_advanced]

Tramlining: Coping with the ruts on the road - A good read

[EsoBOFH]

Never notice this in Canada.. but when I go to the states, there's a section of the I-5 just south of the US/CAD border where I feel this big time... it always weirds me out.

[RiskyTrousers]

My stock alignment had either 1/16 or 1/32 toe out in the front, forgot which. Really made the car feel a little nervous on the highways so I always had to pay attention otherwise I would end up in another lane! I didn't mind much though.