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Old 04-02-2012, 02:32 AM   #1
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Bump Steer question

Ok......... took the beast out on the autobahn for a good long road trip and was playing with a few different cars. I came up on a Porsche and he wanted to play so I gunned it and kept up with him for a good way... UNTIL I hit a nice bump in the road and the solid rear shifted so violently I thought I was going to lose control....... never was out of control but it scared the piss out of me. Will a bump steer kit alleviate that issue?
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Old 04-02-2012, 02:40 AM   #2
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Bump steer is a front end part.
a pan-hard bar is what you need I believe
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Old 04-02-2012, 02:50 AM   #3
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Re: Bump Steer question

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Bump steer is a front end part.
a pan-hard bar is what you need I believe
I just installed an adjustable Pan Hard a few weeks ago. Maybe I will just have to live with this. Just really caught me off guard and got the blood racing...........
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Old 04-02-2012, 07:00 AM   #4
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Originally Posted by M3to5.0

I just installed an adjustable Pan Hard a few weeks ago. Maybe I will just have to live with this. Just really caught me off guard and got the blood racing...........
Have u ever changed the rear lca's? I heard those play a big factor in launch control and wheel hopping in the rear... I never replaced mine after the drop, I'm definitely considering doing it soon
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Old 04-02-2012, 07:23 AM   #5
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Re: Bump Steer question

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Have u ever changed the rear lca's? I heard those play a big factor in launch control and wheel hopping in the rear... I never replaced mine after the drop, I'm definitely considering doing it soon
I replaced my LCAs before I lowered it and I can tell you it makes a huge difference in keeping the rear end planted. You might want to do the UCA too for even better results.

---------- Post added at 08:23 AM ---------- Previous post was at 08:22 AM ----------

Bump steer kits are to keep your front wheels from rubbing when you're running 20s and lowered.
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Old 04-02-2012, 07:27 AM   #6
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Re: Bump Steer question

LCA's have been replaced when I lowered the car, brackets as well. Think I will check out the UCA's
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Old 04-02-2012, 09:37 AM   #7
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Re: Bump Steer question

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Originally Posted by Napoleon85 View Post
I replaced my LCAs before I lowered it and I can tell you it makes a huge difference in keeping the rear end planted. You might want to do the UCA too for even better results.

---------- Post added at 08:23 AM ---------- Previous post was at 08:22 AM ----------

Bump steer kits are to keep your front wheels from rubbing when you're running 20s and lowered.
BUMP STEER KITS have nothing to do with tire rubbing. a bump steer kit corrects the geometry in the tie rods from the cars' suspension being dropped/lowered. when you lower a car it tends to pitch the tie rods at a slightly upward angle. someone else can explain it a lil better....

anyway, i think the rearend gettn unplanted is more of a shock choice issue at that speed, not a bump steer issue. bump steer affects the front end over bumps, makes the front end feel like its moving a few inches to left or right when you go over a bump. and tend to be noticable at low speed city driving, not just highspeed highway.
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Old 04-02-2012, 09:45 AM   #8
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Re: Bump Steer question

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BUMP STEER KITS have nothing to do with tire rubbing. a bump steer kit corrects the geometry in the tie rods from the cars' suspension being dropped/lowered. when you lower a car it tends to pitch the tie rods at a slightly upward angle. someone else can explain it a lil better....

anyway, i think the rearend gettn unplanted is more of a shock choice issue at that speed, not a bump steer issue. bump steer affects the front end over bumps, makes the front end feel like its moving a few inches to left or right when you go over a bump. and tend to be noticable at low speed city driving, not just highspeed highway.
You're right, I was thinking of the rack stops ...

Roush Mustang Steering Rack Stops (05-12) 404476 - Free Shipping!

We'll chalk that one up to it being Monday morning and me not having my coffee yet.
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Old 04-02-2012, 12:10 PM   #9
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Quote:
Originally Posted by M3to5.0
Ok......... took the beast out on the autobahn for a good long road trip and was playing with a few different cars. I came up on a Porsche and he wanted to play so I gunned it and kept up with him for a good way... UNTIL I hit a nice bump in the road and the solid rear shifted so violently I thought I was going to lose control....... never was out of control but it scared the piss out of me. Will a bump steer kit alleviate that issue?
Its the fact you have a solid axle for one. Not as nice over hard bumps at high speed as IRS. Shocks/springs can help with this. Being lowered tends to make you feel this stuff a lot hard as the rear end don't travel as much.
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Old 04-04-2012, 10:30 PM   #10
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Quote:
Originally Posted by M3to5.0
Ok......... took the beast out on the autobahn for a good long road trip and was playing with a few different cars. I came up on a Porsche and he wanted to play so I gunned it and kept up with him for a good way... UNTIL I hit a nice bump in the road and the solid rear shifted so violently I thought I was going to lose control....... never was out of control but it scared the piss out of me. Will a bump steer kit alleviate that issue?
How fast were you traveling? The "track" that I use to air it out has some decent bumps. I try not to hit them going over 140. Haven't lowered yet though. Will do so Sat. (eibach pro spring).
Would like to know if I'll need to slow down more or less for those bumps.
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