A90 Supra vs Z4 M Drag Race - Carwow © Everyone knows that these two cars are very closely related, especially diehard Supra fans which are understandably disappointed in the lack of a unique Supra. They both use the same platform, same drivetrain, and even the same tires. As we all know by now, both cars share the same BMW platform, BMW straight six engine, and ZF 8-speed automatic transmission sending all power to the rear wheels. They're both even built at the same BMW plant in Austria. However, the engines are actually slightly different in the US, where the Z4 uses the B58B30B version of BMW's venerable 3.0 litre turbocharged straight six making 382 hp. In other (global) versions, however, it uses the B58B30C version making 335 hp. All A90 Supra's supposedly use the B58B30C, though. Since those aren't US cars, they should both be using the same version and both making the same 335 hp and weigh nearly the same, so they should be nearly equal... or are they?
Last year, I picked up a 2009 Lancer Ralliart to do a long term test with it as a dual duty track/daily. One of the first things I knew I was going to do was put a decent set of tires on it. The car came without OEM wheels which was actually good because I didn't have to hesitate about getting a good set of aftermarket wheels to support going wider. Thankfully, my friends at YST Auto Halifax set me up with a great set of Superspeed RF03RR wheels. The Wheels I had never even heard of Superspeed but I trusted the good folk at YST Auto who mentioned some customer cars running on track with them. These wheels are rotary forged which is basically a prerequisite to be taken seriously in this market populated by companies like TSW and Fast Wheels. The wheels looked like a high quality, well finished wheel and each had a "QC" check sticker on. Just for appearances? Maybe, but I found no defects. The wheels seemed easy to balance (didn't need many weights) and at 18.1 lb. f