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I saw there are a couple of options for brake cooling on track; Ansix Auto and Tikt. I opted to go with Ansix Auto as I only do 5-6 track days per year.
Fitting them was straight forward, impossible to get wrong. But I have encountered 3 issues when using them which I wanted to ask if others have suffered from.
On full lock, or near full lock, the tie rod ends thread is catching on the duct. This causes a scraping noise and has actually bent the metal bracket slightly.
The duct is catching on the inside of the wheel when the car is under compression and it has melted/broken off a small part of the duct. This was done on a weekend road trip so I would expect much more rubbing when used at the Nurburgring.
Any wheel weights on the inside of the wheel catch the duct every rotation causing damage to the duct
I'm not sure how anyone can run these on the Ring as under high compression they will clearly melt against the wheel or remove your wheel weights from constantly hitting them.
I had hoped from the multiple people on the forums that recommend them that it would be a straightforward process without any issues.
This shows the duct has rubbed and melted on the wheel. Used on the road.
This shows the duct has rubbed and melted on the wheel. Used on the road.
Showing melted edge of duct
Without wheel spacers, shows that the wheel weight will catch the duct, and break it. This was taken with the car in the air but the wheel lifted slightly to simulate compression.
I've spoken to Ansix Auto who manufacture the ducts and their response is simply that they need trimming.
So I assume everyone that runs these ducts has "trimmed" them which would require a 50x15mm section cutting from the bottom corner that is scrapping the wheel.
I had expected that spending several hundred dollars on a tried and tested product meant it was ready to be used and not need multiple fittings and adjustments to function correctly.
I've spoken to Ansix Auto who manufacture the ducts and their response is simply that they need trimming.
So I assume everyone that runs these ducts has "trimmed" them which would require a 50x15mm section cutting from the bottom corner that is scrapping the wheel.
I had expected that spending several hundred dollars on a tried and tested product meant it was ready to be used and not need multiple fittings and adjustments to function correctly.
Sounds like a poor design from people that have never driven the vehicle. It’s a shame they didn’t offer to send you a properly designed part, admit fault, and do the right thing like a mature company might. Fortunately, your post will help others avoid this problem. One of the best parts of the forums is helping others spend their money wisely and weeding out shady vendors.
Interesting, I'll have to check mine later but the last time I looked under, mine was not hitting anything and still in perfect shape after a few trackdays
Interesting, I'll have to check mine later but the last time I looked under, mine was not hitting anything and still in perfect shape after a few trackdays
Do you do any track days with high compression like large dips? And have any wheel weights on the inside of your wheels?
I'll have to get back to you tomorrow when I get access to the car for wheel weights, but I do visit tracks with pretty harsh dips and bumps, actually I even spun off track once (dirt/grass) and the brake ducts were fine
It looks like I have quite a bit more clearance compared to you, wonder why that is.
this is with my car on the ground, not really signs of the duct breaking either
EDIT: looking again closely, it looks like our ducts have different designs? mine cuts in short closer to the wheel
Yours does indeed look like a different design! I wonder why they have changed them, I'll have to speak to them again. The section you are "missing" is exactly the part which is rubbing on my wheels.
Looks like you installed them incorrectly. Try switching sides. I had a similar problem with them - installation instructions are lame.
They definitely can’t be installed on the opposite side as the “closed” end would be inside the wheel which would stop air getting to the disc. And the bracket wouldn’t reach the bottom of the tie rod end.
Photo taken after install, before using on the road/track
ah yeah, hope you're able to easily trim it, weird that they sell them like that, I wonder if the clearance is better on GT/GTS and its a GTR specific issue
Just insane isn't it really. Cost me a fortune to get them over to the UK. Tried and tested, been making them for 6 years or something. But every single set needs trimming or they will melt on your wheel or knock your wheel weights off.
I haven't seen such issues, and I have run my car at Laguna where a few corners really compress the front end. Also, if you are running the ducts to cool of the rotors, you should totally ditch the brake shields as they inhibit heat dissipation.
I haven't seen such issues, and I have run my car at Laguna where a few corners really compress the front end. Also, if you are running the ducts to cool of the rotors, you should totally ditch the brake shields as they inhibit heat dissipation.
Brake shields aren’t on the car at all. They were just on for a test fit photo.
Any chance you can photograph your ducts? They must have rubbed if you have t trimmed them!
This is how the duct looked after I just installed it. I changed the car to a 2020 GTR, so unfortunately, I don't have a picture of the duct after several track runs.
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