If I was to ditch the run flats on my E85 as apparently that’s the best thing to do although I do have loads of tread left on them , which tyres would people recommend at a reasonable price?
Personally I like Goodyear Assymetrics, they're roughly £400 fitted at oem 18" sizes
Lots of people go for hankooks and other mid range tyres and are quite happy, personally I have only ever bought Michelin of Goodyear
Previous owner had applied Bridgestone DriveGuard run flats on my 2008 Z4M. Just replaced them with Michelin Pilot Sport 4S. Ride comfort has improved considerably. Haven't tested them near the limit yet, but I expect they will perform very well.
Ted
I went from 18s with Bridgestone runflats to 19s with Michelin Pilot Sport 4 S. Excellent tyres, and way more comfortable, even with the lower profiles.