victor_t
04-14-2009, 07:21 PM
on the mazda3 I just bought (2007 gx sedan) I noticed that there is a slight steering wheel vibration when braking.
this vibration only happens at high speed (above 80 km/h) and it's not bad enough to be felt if I hold on to the steering wheel. However if I let go of the steering wheel (only hold it in place roughly with my fingers) then as I'm braking the steering wheel moves back and fourth about 1 centimeter.
again, this is not as noticeable under 80 km/hr.
I assume this means the front rotors are slightly warped. Could it come from somewhere else?
I spoke to someone at the dealer and he said brakes are a wear item and are not covered under the warranty, but I think it should be because this was present before I bought the car (according to the CAA inspection they did before I bought it). What do you think/what's their responsibility under the 3 month warranty they have to give me?
I took an appointment with them next week to check it out, in case it comes from something other than the brakes, but I will speak to them again and mention the CAA report.
next question I have: front rotors are 23.7mm, rear rotors are 10.6 mm but grooved.
rear pads are 7.5 mm. front pads are around 4 mm.
when do you have to change the pads? (how many mm left)
for the front rotors, I understand from other posts here that the minimum thickness is 23mm so I don't believe they can be machined anymore, they would have to be changed. is this correct or can they still be machined if they are slightly warped?
this vibration only happens at high speed (above 80 km/h) and it's not bad enough to be felt if I hold on to the steering wheel. However if I let go of the steering wheel (only hold it in place roughly with my fingers) then as I'm braking the steering wheel moves back and fourth about 1 centimeter.
again, this is not as noticeable under 80 km/hr.
I assume this means the front rotors are slightly warped. Could it come from somewhere else?
I spoke to someone at the dealer and he said brakes are a wear item and are not covered under the warranty, but I think it should be because this was present before I bought the car (according to the CAA inspection they did before I bought it). What do you think/what's their responsibility under the 3 month warranty they have to give me?
I took an appointment with them next week to check it out, in case it comes from something other than the brakes, but I will speak to them again and mention the CAA report.
next question I have: front rotors are 23.7mm, rear rotors are 10.6 mm but grooved.
rear pads are 7.5 mm. front pads are around 4 mm.
when do you have to change the pads? (how many mm left)
for the front rotors, I understand from other posts here that the minimum thickness is 23mm so I don't believe they can be machined anymore, they would have to be changed. is this correct or can they still be machined if they are slightly warped?