I have the Firehawk Indy 500s on the E38 and E39 and they are great tires for the price. Will probably put them on the ZHP when its time. They are quiet on the E38, but can be loud at very certain speeds on the E39. I hear tire noise coasting at like 23mph, but quiet otherwise.
'04 330i ZHP sedan | Mystic blue | Alcantara | 6MT | 111k
'98 740il | Schwartz 2 | Sandbeige | 5AT | 238k | lowered on Bilsteins w/ B&G springs
'00 540i sport | Titanium silver | Black | 5AT | 120k
'85 Mustang GT convertible | Medium charcoal metallic | Gray | 5MT | 215k | one owner, all original