View Full Version : High speed braking issue

04-14-2019, 10:02 AM
Hey guys, lately i have been feeling a vibration pulse coming in from the front end when i brake at very high speeds like 250+ kmph, especially when i go hard on brakes. Nothin below 200 kmph. Will it be wrapped rotors or the rim. Its only while braking......

04-14-2019, 01:17 PM
I would try first cleaning the rivets holding the discs if that helps.
They stick sometimes, causing vibration.

04-15-2019, 12:53 PM
The simplest thing i can think of atm is, do you have front wheel properly balanced ?

04-16-2019, 02:09 AM
I ve spent one season with the same problem.
I had brembo SS, 19x18, P30/34 caliper, Z04
Only at high speed as I brake, the handelbar starts vibration (up and down direction) like the road was corrugated.
I changed: pads...none, disk..none, caliper none....
Tried with new wheels...none, new wheel bearing and steering...none.

At the end with T Drive 5.5 and original triple clamp ( before I had the flyhammer triple clamp) the problem seems resolved.

Before go changes and go crazy I suggest you to check the torque of the steering bearing. Tighten them as aprilia manual says (70Nm at the first close and then 60Nm)
And,if you have aftermaket triple clamp, remount and try with the original.

Good Luck

04-17-2019, 12:09 AM
Ok guys thank you so much, will check and get back, also my maual recommends 100 nm of torque for the triple clamp bolt.