Can Regular Wheel Alignments from a Suspension Specialist Fix this issue?
The short and simple answer is no. You could get a wheel alignment from a suspension specialist every 5000km and rotate your tyres every so often to help reduce tyre wear. But this only mitigates the issue it is not a fix. Doing regular wheel alignments serves as a band aid fix to the actual problem.
Alternative fixes that are NOT a Steering Knuckle.
Two years testing in order to design a fix for this issue has taught us. The issue with just doing an upper control arm is you cannot get enough offset in an upper control arm to get a corrective fix for bump steer. The steering rack pickup point needs to be raised to fix the issue. A UCA (upper control arm) can get some change to help with bump steer but wont fix the issue.
If an upper control was designed to fix the bump steer issue you would end up with so much caster that you would end up with tyre clearance issues, giving your car a new problem.
TLDR; You could use an upper control arm to help improve bump steer but it will NOT properly fix the issue and if you did design a UCA which did in fact fix the problem it will cause other issues in turn (fixing one issue but causing other problems). The steering knuckle from SuperPro is designed to fix the issue with zero consequences.
Why is bump steer an issue?
Bump steer is the change in toe in or toe out as the ride height of the vehicle changes. This occurs constantly when driving as the vehicle oscillates over the bumps in the road. This movement is magnified by increased weight from towing, high loads, accessories or a suspension lift . An excessive amount of bump steer will cause extreme amounts of premature tire wear, which is what field reports have shown to the development team first-hand and through their own R&D testing.
What does the SuperPro steering knuckle do to help?
The SuperPro steering knuckle relocates the outer tie-rod pickup point to better optimise the steering geometry of the vehicle to reduce the amount of bump-steer at a range ride of heights. The graph below shows the bump steer reduction when the SuperPro steering knuckles are fitted to a lifted vehicle. The bump steer is reduced by about 75% overall, which when combined with the Zeder offset FUCA would reduce a further 10-15%. When the knuckles are installed in a standard-height vehicle, the bump steer is reduced to almost zero.
This product does not require engineering or mod plating and it is completely legal. TRC6680 is VSB 14 approved, this product is also ADR compliant. It works the exact same as installing an upper control arm.
Superpro's engineering team have both assessed and conducted 3rd party testing on the aftermarket front knuckle (TRC6680) to VSB14 loads, for a front axle rating of 1650kg using FEA analysis. It has been found to comply and exceed the strength requirements. This product can be fitted with any GVM upgrade.
