I spent last weekend at the Mac Mettenheim track practicing A LOT and tested my way through some basic config variables.

Ended up with a great balance, lovely to drive, great amount of steering and just a really good feeling for the car. Also, fastest lap by quite a bit.
So please find my first of many XRAY X4 '25 outdoor setup attached. It's in full ETS trim with HW combo.
You will also find my testing notes with thoughts, ideas and pointers for you to try.

Hobbywing ETS combo note: I had to re-flash my ETS stock speedo because of a problem with the rpm limiter in the software that it came with causing problems (huge fluctuation and not reaching full rpm). But the update seems to have fixed it.

Car note: The testing notes were too long for the setupsheet because a lot of info. Big steps forward and a really good base.

sub 20deg was too cold for 36 tires, so hot warmers and additive to cope somehow. But that made it quite consistent for the first day of the year on a super green track with very little sugaring. Made big improvement steps.

First test with ETS HW combo. Setup to follow separately. 21k limit.

Key findings:

• 3mm rear shock spacer greatly improved stability upon weight transfer at the apex / on power without loss of steering.
• weight balance shifted forward for a much improved balance.
• rear springs need to be stiffer to counter snap oversteer due to cold tires in the rear / keep up tire surface temp.
• softer front (sway bar and spring) both to improve steering balance through the turn while maintaining good rotation.
• 2.0/2.0/2.5/2.5 rollcenter has much more apex cornerspeed but also requires much more skill to get right. Fastest lap with high rollcenter, 1/10 over run consistency with 1.0/1.0/1.5/1.5 because lower is much easer to drive but also 'locked in'. Probably best: 1.5/1.5/2.0/2.0
• the tires showed almost no wear on the outter edge, so I raised the inner camberlink points to use more of the tire surface upon roll. Need to check against less camber.
• the Panthera body feels like really high downforce. Fastest lap, but hard to drive on new tires. Twister is more consistent throughout the run and with better balance, which leads to almost the same pace. Both twister and panthera are drilled very far forward (reference vienna setup for twister position). In high grip the panthera might stop too much.