All I can say is wow! I bought the tires 6 months ago due to an article I saw on this site. I very very pleased with their performance. I drive fast all the time (spirited doesn’t quite describe how I drive) and the 650i is a heavy car and when I bought the care it had Pirelli’s on which were not doing the car any justice and furthermore were useless in the wet! I read a few articles on the Ultrac’s and decided to take the plunge it was well worth it!
Good points!
• The handling was vastly improved in cornering and drag pull off.
• Wet handling is notably different.
• Reduced road noise.
Bad points.
• When new you need at least 200+ miles ware-in prior to any heroics (avoid this warning at your peril), I know it's a standard rule for any new tire, but I would take extra caution with these tires.
• Warm up is also necessary for normal everyday driving (5 or so miles).
I would recommend these to anyone with a rear wheel drive car the 275/45/19 cost £420 and I’ve had literary every mid-range German sportscar there is, from M3’s (e36-E46), S4,S6, A8 3.8 (mk2), 530i sport, Clk55, 840ci the list goes on and I’ve tried most tires… the Ultrac’s are by a significant margin the best for my style of driving.