Street freindly or best bump steer correction toe rod ends?

[STAATS]

Definitely a better start... now its just whether or not they can seal the rod ends they use so the kit can be streeted reliably and a decent price point and id buy.

[liam821]

Definitely a better start... now its just whether or not they can seal the rod ends they use so the kit can be streeted reliably and a decent price point and id buy.

+1

[Obioban]

Agreed.

[pawa_k2001]

...

[Drewrivera]

Pretty sure I need this project in my car. Lol. I feel like the road takes my steering wheel. Only thing I haven't done is high speed balance and completely change my wheels.

[pawa_k2001]

Very late response. None of the companies I contacted produced a product so I bought some tools to measure the bump-steer correctly. At 13" rear and 13.5" front, our M3s don't actually have major problems with bumpsteer, I made a mistake in my earlier calculation. Posting this update just in case someone in the future tries to measure their bumpsteer and comes to the same incorrect conclusion.

[eacmen]

Very late response. None of the companies I contacted produced a product so I bought some tools to measure the bump-steer correctly. At 13" rear and 13.5" front, our M3s don't actually have major problems with bumpsteer, I made a mistake in my earlier calculation. Posting this update just in case someone in the future tries to measure their bumpsteer and comes to the same incorrect conclusion.

Is your Ride height Measurement center cap to fender?

[pawa_k2001]

Is your Ride height Measurement center cap to fender?

It is. Center of center cap to lip of fender. I also measured at 12.75" front and 13.25" rear, bumpsteer should not be a problem. I tested with 2" compression and 2" rebound.

[STAATS]

It is. Center of center cap to lip of fender. I also measured at 12.75" front and 13.25" rear, bumpsteer should not be a problem. I tested with 2" compression and 2" rebound.

Interesting to see there is little impact to bumpsteer with that much of a height change... I mean its positive... means there is not really a problem to fix haha. Did you actually quantify the bumpsteer when you di this exercise so you can quantify the bumpsteer impact due to you particular lowering case?

[pawa_k2001]

Interesting to see there is little impact to bumpsteer with that much of a height change... I mean its positive... means there is not really a problem to fix haha. Did you actually quantify the bumpsteer when you di this exercise so you can quantify the bumpsteer impact due to you particular lowering case?

I will have to find my notes but I did measure bumpsteer at every .25" travel. I don't have stock bumpsteer numbers since my AST shock will not extend to stock ride-height. If anything, I will redo bumpsteer measurements next winter since M3 will get a suspension rebuild at that point.

[BigRussia]

Bumping this thread from the dead as I am now looking into getting a bump steer kit for my street/HPDE car. Running 18x10.5” et22 front wheels with 265/35 tires, I’m fighting the wheel and braking instability under hard heavy braking zones at Homestead-Miami so suspecting I’m having a combination of bumpsteer and effects of too much positive scrub radius.
Front ride height is 13 1/8” with 650kg front springs, -3.7 camber and 0 toe.

See alot of options now online for bump steer kits but wanted to see whats the consensus for a mostly hpde but still street car?

[9kracing]

I run these

https://mrtengineering.fi/products/bmw-e30-e36-e46-bump-steer-adjustable-tie-rod-kit

[BigRussia]

I run these

https://mrtengineering.fi/products/b...le-tie-rod-kit

Yeah seen these and MRT looks to be a well regarded company. Did you go with the 5mm kit? It’s out of stock but seems like would also need to get E90 tie rod inners, so it’s not as plug and play simple install?

[9kracing]

Yeah seen these and MRT looks to be a well regarded company. Did you go with the 5mm kit? It’s out of stock but seems like would also need to get E90 tie rod inners, so it’s not as plug and play simple install?

Correct 5mm, and yes mine came with the E90 inners. Mikko is really easy to work with, hit him up.