hre it goes....
first of all itz the speedo error on R15 even in P220 it exists..
bt still i am the only one who clockd 153km/hr oN YZF R15

..
i hav clockd 150+ a couple of times
bt last time, it waz 153..
the bike at this stage too waz az smooth az butter...
there were no vibrations at oll...
olthough it waz quite a difficult task coz my helmet waz'nt having any vizor
itz the studds motocross offroads helmet wich comes without vizor...
vizor plays an imp. role for increasing
1)bikes speed
2)more top-end
3)saves from dust, wind etc
bt i did it without having vizor in my helmet
talking bout the road, it waz national highway- 76 ther waznt any slope or something, road waz levelled...
had some turns..
(will send you a pic of NH-76)