Did you not notice the wheels were out of balance the first time you took it on the motorway?
Yes.
I had them fit 4 tyres because they pricematched Mytyres for me and thought 'Fitting tyres, how hard can it be?'
They did the job and I noticed that I had a shimmy through the steering wheel. I took it back, they commented that they had balanced them properly but would balance them properly for me again. They did.
The problem was still there. I left it a few weeks, took it back again, and they rebalanced them a third time for me.
The problem was still there.
The E39 is notorious for a 'shimmy' through the steering wheel which is either caused by inproper wheel balance or worn control arm bushes. Obviously i'd now had the wheels balanced 3 times and it had made no difference, so my thoughts turned to replacing both lower and upper control arms at a cost of at least £500.
Before doing so I decided to throw a last 20 quid at the balance issue and took it elsewhere. They rebalanced the wheels for me, told me the balance was 'miles off' and I drove home....
....with absolutely zero steering wobble at all.
That is the last time I ever visited Kwikfit.