GR Yaris Anyone else interested in consumer coilovers for "rally car for the road" application?

[Onehp]

Yes, No problem to configure your personal setup. This should be around 3k and can be made just one set for you. But if we want the stock setup for rear I thing it would be a problem - expensive for one set development. For me no need for thermal compensation but hi/lo speed is must have and seperate reservoirs are nice to have

So what do you propose for 10-20 persons custom suspension?

Edit: or no longer needed if staying coilover rear? We can discuss the merits of adjustable high speed compression. I suspect the seperate reservoirs are necessary for the HBS... Or maybe we should just start talking to Protlum to find a reasonable consumer spec ?

 

[TTomas]

The groub buy would be just in case or OEM rear. If you can live with Classic coilover there is no need of that. I can call Jindra Křístek - the CEO of protlum a get some info. Is there a consesus on the specs and numbers of sets I can discuss with him and get some quote?

 

[Onehp]

The groub buy would be just in case or OEM rear. If you can live with Classic coilover there is no need of that. I can call Jindra Křístek - the CEO of protlum a get some info. Is there a consesus on the specs and numbers of sets I can discuss with him and get some quote?

For others to chip in too...

... but what I can think of, ask if there are things that can reduce the consumer* price which are overkill for the 'rally car for the public road use case' without taking away the max travel, bumpstops and the active rebound valve**. Also ability to adjust height +20 / - 15 mm thereabouts from stock. Also if a TüV is at all possible*.

Numbers, initially maybe 10? But if the kit is well received it could become hundreds? 32000 cars out there with owners that have a relatively high budget on average and many with a relation to rally (well beyond the typical lowering springs public...)

* Opening up to a larger potential buyer base with the only modern rally car in numbers

** On my enthusiast drives I don't really overload/overheat the stock shocks as there is no way I can be on it all the time, but I do run into the bumpstops a number of times and sometimes lift the (inner) wheels that disturbs traction/sliding on snow/gravel/wet/low grip dry surfaces.

 

[TTomas]

For others to chip in too...

... but what I can think of, ask if there are things that can reduce the consumer* price which are overkill for the 'rally car for the public road use case' without taking away the max travel, bumpstops and the active rebound valve**. Also ability to adjust height +20 / - 15 mm thereabouts from stock. Also if a TüV is at all possible*.

Numbers, initially maybe 10? But if the kit is well received it could become hundreds? 32000 cars out there with owners that have a relatively high budget on average and many with a relation to rally (well beyond the typical lowering springs public...)

* Opening up to a larger potential buyer base with the only modern rally car in numbers

** On my enthusiast drives I don't really overload/overheat the stock shocks as there is no way I can be on it all the time, but I do run into the bumpstops a number of times and sometimes lift the (inner) wheels that disturbs traction/sliding on snow/gravel/wet/low grip dry surfaces.

I am afraid TuV is not an option. They produce suspension for large range of cars and not one has it as far as I know.

 

[Florens]

I am afraid TuV is not an option. They produce suspension for large range of cars and not one has it as far as I know.

I understand that it is a tough ask but if they can manage to undercut or be at price parity with the likes of KW and offer a more complete product with TüV they will have effectively opened up a new market for themselves.
I do understand that taking the risk of paying quite a bit for a certificate isn't for everyone..

 

[Onehp]

I understand that it is a tough ask but if they can manage to undercut or be at price parity with the likes of KW and offer a more complete product with TüV they will have effectively opened up a new market for themselves.
I do understand that taking the risk of paying quite a bit for a certificate isn't for everyone..

How many cars in TüV countries?

 

[Florens]

How many cars in TüV countries?

I've only got the data from January 2023 so there must be more by now - 2078 GR Yaris in Germany.
That is not counting Austria which also relies on TüV for homologation plus other countries that don't officially accept TüV papers but have engineers that ask for papers during the homologation process when adding new parts.

 

[Michael Knight]

Gladly us in Soviet Finland part is usually approved if its "made in factory for spesific vehicle". Looks like we don't need TuV since 1.10.2015 for suspension components.
There has been some liberation in vehicle requirements in Finland, luckily as it was rather strict and really difficult to live with.

 

[Florens]

Gladly us in Soviet Finland part is usually approved if its "made in factory for spesific vehicle". Looks like we don't need TuV since 1.10.2015 for suspension components.
There has been some liberation in vehicle requirements in Finland, luckily as it was rather strict and really difficult to live with.

The whole TÜV thing is a bit of a shit show really.
For example: Dampers do not need to be homologated. Springs do have to be however.
What that means is that you can use shit quality dampers with homologated springs and the list just goes on and on.
If it was up to me to decide I'd just give more power back into the hands of the engineers, given that we still ask them to check out and homologate every single modification that has been done to a car, even if there are according papers for the parts.
They should be able to tell apart a quality piece of kit from cheaply made and unsafe parts.
We could still have testing standards for things such as wheel strength and crash safety for aftermarket seats without asking for every single piece to be homologated for our market.

 

[Onehp]

I am afraid TuV is not an option. They produce suspension for large range of cars and not one has it as far as I know.

Understand, at the same time of those large range of cars, I don't think any of them have such a clear "rally" profile in the same numbers.... Worth asking?

 

[TTomas]

Understand, at the same time of those large range of cars, I don't think any of them have such a clear "rally" profile in the same numbers.... Worth asking?

I will, but I know the answer - they make great suspension for race cars and they are a small company with great support for motorsport.
So lets put together what is a must have or should I just ask for something cheaper they can offer? When I have spoken about it with the owner almost 2 years ago he told me that the basic ones start at 2500E and double for top spec.

 

[TTomas]

Does any of you know the the cost and proces of the TuV homologation?

 

[Onehp]

So lets put together what is a must have or should I just ask for something cheaper they can offer? When I have spoken about it with the owner almost 2 years ago he told me that the basic ones start at 2500E and double for top spec.

Ask if there is a middle road spec possible with hbs and arv. Rally sprinkling on consumer spec?

What about others here? Like if you agree or post what you prefer otherwise....

 

[Onehp]

I will, but I know the answer - they make great suspension for race cars and they are a small company with great support for motorsport.

In two years, answers can change... Don't think TüV on one spec is excessive if you can sell sell because of it. Sometimes even ambitious individuals do it because there really want something.... I've once read like 10k €?

 

[Florens]

Does any of you know the the cost and proces of the TuV homologation?

Unfortunately not but it won't be super cheap - it's reasonable enough for all of the German companies that make coilovers though so the maths must add up in the medium term...
From what I've heard TÜV Austria might be cheaper for certificates than the German counterparts - could just be a rumour though

EDIT:

Some links towards these separate entities that might all charge different prices, so it might be worth asking around:

Prüfung zur Typgenehmigung von Fahrzeugen und Fahrzeugteilen (für gewerbliche Kunden) - TÜV AUSTRIA

TÜV AUSTRIA ist erster Ansprechpartner für die Prüfung zur Erlangung einer Genehmigung für Fahrzeuge und Fahrzeugteile.

www.tuv.at

https://www.tuvsud.com/de-de/branchen/mobilitaet-und-automotive/kontakt

Typprüfung von Fahrzeugen, Systemen und Komponenten

Vereinfachen Sie mit unserem globalen Netzwerk den komplexen Homologationsprozess für neue Fahrzeuge, Systeme und Komponenten.

www.tuv.com

EDIT 2: What you're looking for is a "Teilegutachten" (Parts certificate) for the German market.
ECE homologation would be fine too, I've never seen that for suspension though.

 

[Florens]

In two years, answers can change... Don't think TüV on one spec is excessive if you can sell sell because of it. Sometimes even ambitious individuals do it because there really want something.... I've once read like 10k €?

I think that might be the ballpark, can't confirm it though since nobody really talks openly about the prices

 

[LittleMav]

I understand that it is a tough ask but if they can manage to undercut or be at price parity with the likes of KW and offer a more complete product with TüV they will have effectively opened up a new market for themselves.

So true….

 

[Tralien]

interrested too.....the BOS is my favorite, maybe go the opposite way and get one BOS tested...i would give an additional 500€ for the bos just for tüv paperwork.

if not bos......smallest possible lowering and closest to stock spring rates is my target. I dont want to have higher springrates and i dont want to lower my car. just a good damper and thats it....so BOS has everything i need, but no tüv
i would pay up to 5000€ for it

 

[micsub]

Just came across this post. So sorry I hadn't seen it before.
I was looking for a kit with progressive close to OEM spring rates max, lowering not required, maybe -10mm max, but option to lift a little (+10mm ? ) would have been nice but very good hydraulics mandotory.
I was looking at BOS for a time, but then AJS Piras had a bad experience with them (rear travel too short, and bottoming out often, ended up with damage. Several months to get sorted out by BOS, it looks like their After Sales Service sucks).
So I deleted BOS from my short list. Then spent a year or so persuading myself that the OEM Track pack suspension is fine, it is good, at high speed on bad tarmac roads they absorb very well, but as soon as the rythme drops, or in town, they are too harsh, the car is jumpy and uncomfortable.
So started looking again a couple of weeks back, came across the thread "Gravel suspension magic / components for GR Yaris" here : https://www.gr-zoo.com/threads/grav...omponents-for-gr-yaris.653/page-3#post-113685
exchanged with "The man with the stick" and bingo it was exactly what I was looking for described above.
TracTive is the way I chose to go, but it would have been interesting to see how much cheaper the kit would have become if several people had been interested.