virden Posted October 8, 2017 Share Posted October 8, 2017 My Vauxhall Insignia, has just returned from its second major service with the news that as per the first, the front and rear NS brake pads have worn much more than the OS pads. The car drives well and I have no issues with braking or handling so what is the cause? We have a lot of muddy surface water on the edges of the roads up here, could it be grit from going through these that causes the extra wear? Link to comment Share on other sites More sharing options...
elie boone Posted October 8, 2017 Share Posted October 8, 2017 I would rather think it would be the stability control that caused this. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 10, 2017 Member Share Posted October 10, 2017 How interesting. I'd check whether: The discs are identical. The pads are identical. The retardation on test rollers is very similar (even though you've already thought about that on the road). The wheels are running freely both hot and cold. There's anything from the ABS or similar on the diagnostic analyser. It's mentioned in any Vauxhall or Opel forum.I would rather think it would be the stability control that caused this.More, please, elie...Jonathan Link to comment Share on other sites More sharing options...
RogerB Posted October 10, 2017 Share Posted October 10, 2017 My tin top is also an Insgnia driven on the West Coast of Scotland. I had my second service earlier this year at 34k miles with no significant uneven brake pad wear. However was advised I needed new discs and pads all round as they where down to the metal. Quoted over £500 to replace with after market parts.. I drove the car home, carefully, and did the job myself for less than half the cost with good qaulity parts. Incidentally they where not down to the metal but near.Sorry I can't cast light on the uneven wear phenomenon but thought my similar experience may be relevant. Link to comment Share on other sites More sharing options...
virden Posted October 10, 2017 Author Share Posted October 10, 2017 HI Jonathan and Robert"The discs are identical. Yep, all replaced at the same time The pads are identical. Yes, replaced with the discs The retardation on test rollers is vey similar (even though you've already thought about that on the road). Yes, passed its MOT with no referrals The wheels are running freely both hot and cold. Seemed to be OK when the car was on the ramp, not tried that when hot, but a "hand test sugggests that none of the wheels are running hot. There's anything from the ABS or similar on the diagnostic analyser. Do not know whether this was checked at Service/MOT It's mentioned in any Vauxhall or Opel forum. No idea, this the only forum I use "I would rather think it would be the stability control that caused this" Could be, I don't normally notice it, but it does not seem to like spirited driving over a tight serious of bends and dips, the back can get seriously out of shape. Answer : slow down!! Link to comment Share on other sites More sharing options...
elie boone Posted October 10, 2017 Share Posted October 10, 2017 If you have a lot of mud on the road edge, that wheel will be spinning far often than the other side and the stability control will use the brakes to avoid spinning Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 10, 2017 Member Share Posted October 10, 2017 Thanks. Does the warning light typically light up when that happens, or is it now "normal"?Jonathan Link to comment Share on other sites More sharing options...
elie boone Posted October 10, 2017 Share Posted October 10, 2017 It depend on the manufactor. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 10, 2017 Member Share Posted October 10, 2017 ThanksJonathan Link to comment Share on other sites More sharing options...
virden Posted October 11, 2017 Author Share Posted October 11, 2017 ElieSurely in the case of spinning the electronics would only brake the front (driving) wheels.Thinking about it more the warning lights seldom come on, only doing so when there is significant slipping. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 11, 2017 Member Share Posted October 11, 2017 I think this implies that "Traction Control" only works on the driven wheels but "Electronic Stability Control" on all four, but it isn't conclusive. Also has the meaning of the warning lights.Shirley Link to comment Share on other sites More sharing options...
Toby S Posted October 17, 2017 Share Posted October 17, 2017 If it was due to the traction control cutting in due to wheel spin, to be getting that degree of pad wear differential, surely you would also be noticing the a similar diffrential in tyrewear between n/s and o/s - is there any marked diffrences there.Perhaps it could be a faulty traction control sensor intermittedly braking the near side of the vehicle when they are not actually spinning, although I suspect if it were the handling would be all over the place as the car would be constantly pulling to the left.Noit much help I'm afraid, but I would suggest a diagnostic plug in at Vauxhall would be required to check if theyre is a problem or whether they have any answers Link to comment Share on other sites More sharing options...
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