I know the feeling.
Whilst I was getting my new brakes fitted, we found out that I'd need to cut a shitload of metal out of the rear brake backing plate, would also need spacers & longer bolts for the front, and a new set of HEL rear braided lines (as one supplied had a leak, and were quite a tight fit anyway)
Whilst it was there I investigated my dangling wire from the Z4-Forum National meet (along with another destroyed rubber lip spoiler), and found both rear O2 sensor cables were damaged and were giving out no signal - so another £500, plus whatever breaks trying to get 160,000 mile old O2 sensors out from behind 160,000 mile cats (ben told it is easiest to drop the whole exhaust, but hope nothing breaks) :headbang:
Whilst underneath we noticed the power steering pipes were corroded, and the sump was seeping, plus its about due it's annual Inspection 2 :thumbsdown:
Although my man-maths tells me I saved some cash by note having a road-worthy car for my scheduled Ring trip the following weekend, as the parts were either on back-order or being custom made
ETA: more costs coming...just driven home and as usual my lights came on automatically as it got dark enough...or one of them did. Bulbs are only 12 months old, and bought from a member on here! Luckily my originals were only replaced as they were getting a bit dull with age, so will try refitting one and see if it's just a bulb :x
.
