Hello people, my car had to take the days to the workshop because the bearings of the tensioning rollers were finished. My current workshop then also had to renew the timing belt because it was completely over – 5 Mark piece large area broken out and absolutely cracked. Now the car was exactly because of this about 2 years ago in another workshop for the renewal of the above mentioned parts and in addition the water pump ect. was changed. My master also said immediately that this r V-belt never ran 50,000 km, but much longer. Clamping rollers also last longer than the 50000 km driven, which allows the conclusion that nothing was changed at the time. Is it possible for me to prove this perfectly? Should I get an expert? Thank you in advance for constructive help.