does your car pull on uneven roads?

[OrangeMustangGt]

I have 265's on my front tires, and for ever my car has been pulling side to side over uneven roads. My question is, is it my alignment or just the fact that the tires are pretty wide? It is fine on normal smooth roads but the car wants me to commit suicide on bad roads.

i have a cheap alignment gauge, and i measured the alignment and it is within specs(3/32 toe in) But would camber cause this? i may be a bit out.

 

[1TallMF]

aaahhh bumpsteer. A mustang is not a mustang if it doesn't have bumpsteer. Its due to the not-so-great geometry of our front suspension. Wider front tires do contribute to worsening bumpsteer, myself I wouldn't go any wider than 255's on the front because of this. There are a few ways to remedy this, one is offset rack bushings (cheap) or a bumpsteer kit to replace the tie rod ends (not quite so cheap). I don't think either will completely illiminate the problem, but it will improve it dramatically.

 

[95strokerPSU]

I have the Steeda bumpsteer kit and I still experience what you're talking about.

 

[1994Vib.RedGT]

I have stock front suspension and mine pulls all over the place on uneven roads

 

[Mike97gt]

mine used to do it badly but then I realigned it with a tiny tiny tiny bit more toe in and t seemed to fix it. But I am on the stock 245's on a stock suspension..

 

[HISSIN50]

I was thinking the issue might be more akin to tramlining. Seem possible?

 

[SeventyMach1]

aaahhh bumpsteer.


There are a few ways to remedy this, one is offset rack bushings (cheap)

Not with the stock K-member. They make bumpsteer worse.




I know tires can make a car feel like a different machine. I put my old waffle's (with 265's) on my old Ranger (originally had 245's) and it made the truck squirm back & forth alot more. I guess because I just couldn't get used to the steering differences.

Is it actually bumpsteer that you're experiencing? Doesn't really sound like it, IMO.

 

[OrangeMustangGt]

i have a bumpsteer kit anyhow, and i dont think its bumpsteer anyway....it follows the road badly

 

[ProKiller]

get smaller tires?

 

[94-302-vert]

it is tramelling...

Both tires and alignment affect this...

I had cheap tires on my car and then put on some goodyear tires (the ones that come stock on a 99 gt).. trammelling began.

I lowered it and played with the alighment (I run as much caster and quite a bit of negative camber) and it got at least tolerable...

Changed the front tires out for some $80 general UHP's and the trammeling is gone...

I think it is mostly the tire tread wanting to follow the road and a wider tire simply exacerbates this....

BTW ny original tires were 225/55/16, then the goodyears and generals are the 245/45/17...

 

[1TallMF]

I stand corrected

 

[Methodical]

Tramlining. I used to have that problem before I installed my coilover kits and a new 4 bolt CC plate. I have 275/40s (Nittos 555) in the front on 9.5" wheels. What I discovered was that if you adjust to maximum positive caster - pull struts as far back towards the rear of the car as the CC plate allows - you can rid yourself of the tramlining issue. So if you have CC plates experiment with your caster. If you have negative caster the car will feel darty so don't go forward with the strut. This cured my tramlining issue.

 

[stang95silv]

mine pulls a tad.. could be the v8 and v6 springs tho

 

[OrangeMustangGt]

thanks, but i allready checked the alignment and have the maximum positive caster.

The only thing i dont know is the camber......could this being off cause the issue? Also, i think i'll have to try some thinner tires....BUT how do cars with wide tires stock not have this problem?

 

[94-302-vert]

I bet it is the choice of tire. With the same alignment settings I noticed a hige difference btween my cheap touring tires that were on the car and the goodyear tires that i replaced them with.

 

[95_5.0_stang]

mine pulls a tad.. could be the v8 and v6 springs tho

Mine pulls quite a bit both ways on uneven roads. I still have v6 springs in there too, maybe that adds to it.

 

[TheDamned]

It's normal, i have 275 in the back and 245s in the front and it pulls like crazy and my suspension is almost new.

 

[rude_life]

From what I understand, A bumpsteer kit along with adjustable caster camber plates and those Steeda X2 balljoints solves the problem

 

[The Green GT]

Is there even anytrhing you CAN do about that? If the road it turtle backed, gravity will do whats its supposed to. My car did it with the stock 225's and still dose it with my 255's.

 

[HISSIN50]

Eric, I agree with you about crowned roads (that's what you're talkin about with the Turtle backed reference, I think - that's a new term on me but it makes sense). The gyroscopic effect of spinning wheels counteracts the effect to an extent.

However, I think that GMGt is having an issue with the steering darting side to side as he hits ruts and what-not. You constantly have to correct in each direction, not just countersteer into the crown.