Caporegime
I seeee
As for a guesstimate, no idea!
I seeee
Trying to investigate a brake judder issue with my E90. It's pretty weird in that when braking (even lightly) from 50-60mph or lower it's fine. From 70mph I'll get a weird judder that feels like it's coming from the rear of the car but that may be my imagination. Can't feel anything through the brake pedal.
I know my wheel balancing is ok and suspension bits all seem to check out ok so it's got to be brake related. I changed my rear discs and pads not that long ago...no idea what the condition of the front disc/inner front pads are like though. Don't really want to go buying new discs/pads all round if it isn't going to sort it out though. Best get the suspension bits looked at properly first I suppose.
Took my car into BMW today as I am getting vibrations few the steering wheel since having my new tires fitted. Just had them call back to tell me I have the wrong tires fitted (Eagle F1 AS2 in the right sizes) and that I should sell them and get the original tires for it. Safe to say I am not about to do that :/
They have balanced the front wheels for me for free though and told be I have vibrations though the front brakes (same ones I replaced completely this time last year). Bloody cars.
You could try bedding your brakes in again? It could be brake pad material deposited unevenly on the disc.
Take it for a drive with some fast stops to get the brakes nice and hot. Then do a few stops from high speed to almost a complete stop (but do not come to a stop!). Repeat that a few times on a nice quiet stretch of road, then drive for a while to cool the brakes off. It might fix it.
Wheels. Get-rebalanced. Weight might have fallen off.
Picked the car up, haven't payed for anything so that's good. Didn't get up to motorway speeds so not sure about the vibrations. But they reckon I might have a warped disk :/ Technician is ringing me tomorrow to give me more info.