FRANKFURT -- German prosecutors have opened an investigation into BMW motorcycle brakes after receiving a complaint that they may fail in some circumstances, the authorities in Munich said on Tuesday.
Lead Prosecutor Christian Schmidt-Sommerfeld said the investigation concerned endangering road traffic. The probe stems from a complaint from a motorcyclist.
"After it was alleged that this was not an isolated incident but perhaps related to the way they are built, we will expand the investigation further," he added.
A BMW spokesman said the problem had only emerged in the extreme conditions of safety training and that the company was not overly concerned.
Up to 260,000 heavy motorcycles have been equipped with BMW's so-called integral ABS system that is designed to reinforce braking power and prevent the wheels from locking up, BMW said.
He confirmed a media report that two riders had fallen while taking ADAC motoring club safety courses with BMW motorcycles and added that 20 drivers had filed complaints, but said no cases had emerged among drivers on public streets.
He said BMW had advised ADAC to change the course so that extreme braking did not push the vehicles to their technical limits.