2015 Lexus RC F destroys the 2014 IS F on track
My apologies for the dramatic headline, but it is not untrue. Torque News recently had two opportunities to track the fastest of Lexus’ production cars, the 2014 IS F and the 2015 RC F. Both were run at the Monticello Motor Club, arguably the best racetrack in the Northeast. I’m a fan of the Lexus line, and owner of an IS 350C and prior owner of a Supra. What I learned over about 32 total laps in these two amazing cars is that the IS F will always be a legend, and that the RC F improves upon the IS F in almost every objective and subjective way.
IS F is a Balanced Car
Let’s start at the end. The IS F’s best feature in my opinion is its balance. It is a car with enough engine, enough brakes, and amazing handling on a road course. A semi-skilled driver, like myself, can enjoy the IS F on track for hours. With each lap, the driver can learn more and push the car just a little farther.
RC F Has More and Better Drive Modes
By comparison to the RCF the IS F has only one track setting, called “Sport.” The RC F has Sport, Sport Plus, and a setting called “Expert” that is not shown on the options in the car, but can be accessed by owners and Lexus pro drivers. These settings are what really set the RC F apart from the IS F.
In Sport Plus, the RC F’s AI (artificial Intelligence) transmission is amazing. I wrote a whole story on just this part of the car. In brief, the AI sport direct shift 8-speed in the RC F has the car in the power band all the time on track. The IS F by contrast, does not. When exiting corners the IS F can be often caught in a dead spot at the bottom of the rev band and requires a shift or two that the RC F does not. Yes, you can paddle shift both cars, but for me the RC F in Sport Plus and in the “Drive” setting was much more satisfying. It makes you much faster.
No, the IS F Does Not Have the Same Engine As RC F
With regard to engines, both share a block and not much else. However they both behave the same way. At low RPMs they have one sound, then as the revs climb and the cars “come on cam” and switch their variable valve timing to the aggressive settings, they bellow, and the thrust comes on strong. The feeling is almost like a forced induction car (supercharged or turbocharged), but more gradual and later in the rev band. The RC F is also just more powerful. Its 467 hp provide noticeably more thrust than the 416 hp the IS F has.