this is a completely incorrect statement, and whomever told you that was lying to you. 16/44 is -1, +2, and it makes it an even higher percentage than stock. i would guess between 20% - 25% error.I've read that the K4 speedo with stock sprockets (17/42) is around 8% - 10% off. Running 16/44 sprockets is supposed to get it closer too reality, so now 178 mph is at redline in 6th gear. I did however, read this in an ad for a 520 conversion kit...
Plenty fast. As fast as your gears and ultimately the power of the engine and aerodynamics will allow. It is my personal believe that the speed restriction is limited by gearing, engine power and the rev limit. Not some mysterious ignition cut-off at 186 mph in 6th gear. Sorry TRE guy's but that's the reality unless someone can convince me otherwise.Wonder how fast it will go when I'm out of the break in period.
Interesting results. Seems almost too close to call what is actually happening. However, at high speeds, 1 mph/kph steps is much more of an effort, unless an abundant amount of power is available and drag coefficients is good at that speed.my personal results of diferent runs measured with GPS on 1k :
stock gearing&michelin pilot sport 190 without tre =294 kmh
with tre =298 kmh
metzeler sportec 190 without tre =297 kmh
with tre =301 kmh
17-41 & sportec 190 without tre =300 kmh
with tre =306 kmh