Over the holiday weekend, I picked a warm day to condition the leather. I’ve used zymöl products in the past (their amazing smelling carnauba wax). In other cars, I’ve tried Lexol and Griot’s, but started reading bad things on the internet (image that) about the former. I applied the zymöl leather conditioner and let the M5 warm up in the sun before buffing it out. Worked beautifully. Sorry no photos of the before and after.