Fitted new red stuff pads all round this week. Didnt replace the discs as they were ok.When braking at speeds below about 75-80 ther is no problem but when braking at 90ish there is a bit of vibration. Nerver had it before with the old pads. Could it be that the pads havnt bedded in properly? they were fitted correctly as i took the old pads off. Any ideas...