Hard brake sway

[ViperPete]

OK so when I am on the highway or at speed, and have to step on the brakes rather hard, I get a pretty un-confidence inspiring sway.

I am sure that a lot of it has to do with the Nitto tires- which I cant wait to change. I cant stand H rated tires...

But the truck is lowered, 2/5 tony kit, brand new shocks all the way around- all poly bushings everywhere and belltech rear sway bar.

What can I do to ensure that the wheel stays straight when I hit the brakes?

 

[LightningRaper]

Had this problem on my hemi and my rotors were warped

 

[trussman]

Hod the steering wheel tighter.

 

[ViperPete]

Brakes are brand new.

I can hold the steering wheel just fine, what I mean is- why does the truck sway? It's not supposed to.

 

[moparviper]

Are You Sure Its Not Suppose To Do that

 

[ViperPete]

I've never driven a vehicle that didn't brake straight and true.

 

[VENOMOUS1 RACING]

It should brake straight as you say! Sounds like a good brake bleeding is needed. An air bubble in one or more pistons would give you this feel sir. You mash the brakes and calipers are unevenly applying pressure to each wheel

 

[ViperPete]

Hmmm, bleed the brakes eh?

OK I can give that a try.

Thanks guys.

 

[BAD SNAKE]

Did you replaced the steering rack bushings?

 

[Psycho1122]

With your truck lowered, how much travel do you have static?

On the road, you "possibly" could be bottoming the front suspention under hard braking with the limited travel.

Once your bottomed out, the front suspension has no ability to dissipate additional force and the rear end of the chassis will sway laterally.

Something to consider...

Cheers

 

[VENOMOUS1 RACING]

With your truck lowered, how much travel do you have static?

On the road, you "possibly" could be bottoming the front suspention under hard braking with the limited travel.

Once your bottomed out, the front suspension has no ability to dissipate additional force and the rear end of the chassis will sway laterally.

Something to consider...

Cheers

Yup, look under truck and see that you're likely sitting on bumpstops front and rear

 

[ViperPete]

I have the poly steering rack bushings but haven't installed them yet.

Front bump stops? Not sure. haven't measured. Rear I know ive got at least 1.5 - 2.0" of travel.

I could be bottoming out, but I hear and feel no noise, vibration or bumps!

 

[VENOMOUS1 RACING]

I have the poly steering rack bushings but haven't installed them yet.

Front bump stops? Not sure. haven't measured. Rear I know ive got at least 1.5 - 2.0" of travel.

I could be bottoming out, but I hear and feel no noise, vibration or bumps!

No way you have that far in the rear with a 5" drop unless you are c-notched? Guarantee front is riding on bumpstops
My rack has stock rubber and 110k miles and handles fine do doubt that's it.

 

[ViperPete]

Hmmm. OK. I'll check tomorrow on my day off.

 

[VENOMOUS1 RACING]

Still leaning towards the air in brakes though. Mine sat on stops for a long time and just didn't have suspension over potholes, bumps, etc. didn't road walk!