Freeway lines Toss around my FR-S
 

I didnt notice this until i started driving my car to work everyday but when im on the freeway the lines in the middle of the lanes kinda throw my car around (im pretty sure its the skinny tires) (for those of you san diego folks im talking about the I-15 north/south) any other reason why this would happen??? It just seems like my tires get stuck in the lines and when the lane starts to turn and the line takes a different course my car will be guided with the line and i have to do a lot of correcting to stay straight in the lane. (sorry if i sound retarted lol i dont know how else to explain it)

i've noticed it too. feels like i have a flat.

I also feel like my car moves around a lot at highway speeds. Like its a Windy day or something

I get tramlining on grooved concrete freeways. The car kind of shuffles and feels way loose..

Isn't this normal? Happens on my Accord too, though not quite as much. Weight of the car has a lot to do with it I'm sure.

Good Im not the only one..haha..i hope when i get new wheels and tires this problem is corrected bcuz its annoying and i have to admit tiresome especially afterwork

You said it way better then me haha..I get it pretty bad on certain parts of the freeway to where i think i look like i cant even drive my car straight..suprised i havent been pulled over for DUI..lol

Air pressure could also be a contributing factor.

well ive owned plenty of eg's hatchbacks and some with the small vx/hx wheels and never had that problem, ofcourse they were always slammed/lowered so maybe they had more grip

I've noticed it happen too when I had my michellin's. Now that I've switched to the Yoshihara Designs D-12c wheels with 245/40r18 sumitomo's on them, I definitely feel more in control of the freeway lines rather than the freeway lines being in control of me.

More Throttle.....

Its the light weight combined with the skinny tire profile of the car, some heavier cars do it as well like my 2007 Honda CR-V, once you get wider rims and way better tires and the contact patch increases then you won't have the issue anymore.

I get that in certain areas on i-5 up here in Washington where the road is more worn then others, which I'm sure in your area it is all pretty much worn down haha, no matter what car I'm driving it seems to do it in the same areas. So basically my point is yes it is normal and tire grip and height/weight could be the reason you haven't noticed before :)

Im glad new wheels fixed the problem :w00t:

Aerodynamics and its contributing factors.

Nice! Go on a highway on a windy day and tell us if that fixes the "dance" issue for if its windy please.

Ive had that problem with my old car. its the grooves on the freeway and the thread of the tires, the stock tires have alot of weird angle and line thread. So they our tires hit the grooves on the freeway, it shift. I dont know if you get what i mean.. the freeway is straight line and our tires if diagonal and rubber is soft and its suck. Change tires and you will see the difference

It's because the car is pretty much at a 50/50 with skinny tires.

Mine did the same. Just changed to wider Hankooks..have yet to experience it with those. Neither my 4x4 ram nor lowered silverado does this, though it has 275 width tires.

what size hankooks (specs) did you get? and your talking about on the stock rims right?

Still 215's on stock rims, but they are wider by about .5" to .75"
http://www.ft86club.com/forums/showthread.php?t=40734

yeah the hankooks look way better appearance wise to...i probably will go 225 if i get better tires for the stock rims @6speed_Sam

initial d gutter technique.