We wanted to develop the suspension set for new Supra A9x from the day it was available, but things really started to happen, when we have watched this video: https://www.youtube.com/watch?v=XSH3RgGSmF0&t=288s
Robert from Apex Nürburgring explains the issue with bump steer in the supra and potential problems that it causes in the video above. On the Nürburgring where the cars speed goes up to 270-280 km/h or 175-185 mph, the suspension works in its full travel range. Robert is driving daily the best handling cars in the world like: Ferrari 488 Pista, Porsche GT2RS, McLaren 620R, BMW M3, Toyota GT86 and many others. He knows how to drive and based on this we have developed our set in cooperation with Apex.
Full set includes (you can click bellow on the name of the item to view full item description):
Toyota Supra A9X and BMW Z4 G29 were originally designed to provide the best driving experience for normal street use, with a reasonable amount of pushing the car to its limit. That is why it provides from factory tail-happy handling to encourage the driver to have some fun and go a little bit sideways from time to time during everyday use. The issues start to arise when we are starting to look in that car for performance, that tail-happy behavior is starting to give problems with instability of the car.
The main cause for that is the rear end bump steer. In simple words bump steer is telling us how the toe is changing through the suspension travel. In stock Supra bump steer is quite significant. For example during alignment you set your rear toe to 0,11° toe in (black center dot on graph below). This is using stock camber values. Under hard acceleration Your rear end is going down, around 40mm. Then due to bump steer your toe is changing to about 0,3° toe in (blue left dot on graph below). On the other hand under hard braking your rear suspension is going up, again around 40mm. This time it will give you about -0,1° toe out (yellow right dot on graph below).
Summarizing: VERKLINE goal in preparing that 3 setups presets is to improve stock Supra A9x/Z4 G29 and additionally prevent all issues which would occur due to modifying, e.g. camber or ride height to fit the car to a designated use. Our kits will include precise guide lines on how to setup the car using our wishbones and rear subframe.
Used in:
- Toyota Supra A90
- Toyota Supra A91
- BMW Z4 G29
Notice: Sold for off road, track and racing applications only. Mounting the bushing may increase some noise, vibration, and harshness (NVH) in the car. We strongly advice to mount the subframe in qualified and experienced workshop