Why is it that the most desirable imagery of the new Toyota GR Supra that’s out so far isn’t by Toyota itself? Until now, I’ve been on the fence with the A90 – not because of the hotly debated BMW hardware, but because I’m not sure if I like how it looks – but this video and pics of the Supra being tested by HKS might have done it for me.

Japan’s car scene is all about the Supra now, especially in the aftermath of the “Supra is back to Japan Fes” celebration over the weekend. At the same time, legendary tuner HKS released images of it testing parts for the A90, with input from famous racer/drifter Manabu Orido a.k.a. Max Orido, who’s known as a Supra man.

In the video above, you can see HKS and Orido testing and comparing notes on the Supra parts they’re working on, namely the muffler prototype with the trademark HKS tip, and the Hipermax adjustable springs, which will work together with the A90’s stock active dampers. The latter will provide some height adjustability, and extra stiffness if needed.

Yokohama played a part in the test session at the Gunsai cycle track too, and they brought some good stuff. A Japanese sports car should sit on proper Japanese rims and rubber, so out goes the Michelins and two-tone alloys (let’s leave those things for the Contis) for Advan Neova AD08Rs and Advan GT rims.

This Advan wheel-tyre combo needs no introduction, and the white 19-inch items look perfect on this Matte Storm Grey Metallic Supra – it’s amazing how a set of rims can totally transform a car’s appearance. Not sure about you, but this is the first time the new Supra is “talking to me.” Also, don’t forget to turn on the volume to hear the car growl.

To recap, the Supra will be offered in Japan in in three grades – SZ, SZ-R and RZ – priced at 4.9 million (RM186,420), 5.9 million (RM224,465) and 6.9 million (RM262,498) yen respectively. The SZ kicks things off with a 197 PS/320 Nm 2.0L turbo-four, the SZ-R ups figures to 258 PS/400 Nm, and the RZ is powered by a 3.0L inline-six turbo with 340 PS and 500 Nm.

Of course, all are BMW engines paired to a ZF eight-speed torque converter automatic gearbox sending drive to the rear wheels. For the full list of Japanese-market A90 specs, pics and TRD parts for the sportscar – click here.

Anyway, it’s great to see tuners and racers working on the A90 so early in the day, even before the car goes on sale. They’re only able to do so because Toyota provided them pre-production cars in an effort to embrace the aftermarket, which is a wise move – the legend of the Supra is where it is today because of the aftermarket, anyway.

Things can only get better from here, right? What do you think?

GALLERY: A90 Toyota GR Supra, Japan-spec