FiveAxis Lexus IS-F at the 2007 LA Auto Show

When Lexus set out to target the likes of the BMW M3, Audi RS4 and Mercedes C63 AMG with its spankin' new IS-F, they weren't kidding. The V8 super-sedan turned out to be an astonishing departure for the Japanese luxury brand that cut its teeth on rock-solid reliability and luxurious comfort. Not content resting on its laurels, rumors are surfacing that Toyota is hard at work preparing an even more extreme variant, being dubbed in the motoring press as the IS-F/R.

Reports have Lexus tweaking an extra 12 horsepower and 4 lb-ft of torque out of the Yamaha-sourced 417-hp/372 lb-ft, 5.0-liter V8 for an increased output of 429 hp and 376 lb-ft of torque. A modest increase, it would seem, until you look at the targeted 220-lb weight reduction. And as we all know, a little more power unburdened by significantly less weight is a winning formula. Just ask the likes of the Ferrari 430 Scuderia, Lamborghini Gallardo SUperleggera, Porsche 911 GT2 et al.

The rumored price of admission? A whopping 11 million yen in Japan, compared to the 7.7 million yen for what suddenly looks by comparison like a rather ordinary "standard" IS-F. Pursuit of Perfection, indeed.

[Source: Winding Road]