Many tuners are getting 550 hp out of the V10 (some even more than 600hp) and I havent heard about any reliable problems on m5board.com.

Hartge develops 550 HP with minor changes to original engine setup..Hamman and AC Schnitzer also..and those are respectable tuners with most serious upgrades and high reliability(I think service intervals and expected engine life is same as original BMW product,if I´m not mistaken)..IMO BMW shouldn´t have no problem pulling 560-570 HP with current displacement..only torque would be almost identical with curent engine,or slightly different.

What is this? Is it another Panamera style testing of another car disguised as a BMW? Or is it a real BMW?

Really flared fenders. CSL?

with roll cage and a lil bit CFK

- ONLY REGISTERED AND ACTIVATED USERS CAN SEE ALL LINKS - CLICK HERE TO REGISTER

so its the Panamera being tested?

I doubt the roll cage is for the M5 - makes the rear doors kinda useless - may be it is a M6 CSL underneath.

I doubt that too, unless now Porsche is making BMW body panels. The fenders are actually part of the body panel - not some stuck on thing.

Something is fishy about this car..hmm..interesting..