Kinda surprise that this thread is sleepy, but anyway my review of UC6 - this tyre came with my car - a 2nd hand Mazda which I got about a week ago. I must say, it is really really quiet, compare to all my previous tyres. Probably I am used to UHP last time, a bit of speed devil in me and also high speed cornering (when it is safe of course). I actually have a chance to test out the tyre as soon as I got my ride - I went for a short outstation trip to Ipoh.
As mentioned its a silent donut - with treadwear of 300 (if I am not mistaken), means that its decent for 40 - 50K mileage depending on driving style. Other rating is A and A - for traction and the other slipped my mind - throughout the journey, I hit 100km/h - 120 km/h, as well as short burst of 140-160 - feels fine and planted - I am quite confident flooring, if not for hoggers and sudden lane cutters - bunch of idiots. Traction is better as the wheels getting warmed up, which are great for stability and road holding accuracy. I remember cornering a stretch at 160km/h - handling is sharp and precise, pretty much increase the confidence of the driver.
It's assured dry handling all the way until I reach Tapah, when dark clouds gathered and it didnt't rain but pours. The rain is quite intense from Tapah onwards to Ipoh, and even then I did test the tyre at high speed - 140km/h, as other cars are slowing down, I move right and test on a stretch of about 10km, and throughout the cruise, it is still impressive, despite heavy rain, the tyres just cut through the stream of rain water on the highway without a hint of sway, but having said this, there is slight aqua planning when I cut back to middle lane and bear in mind that the rain is really heavy, and as they say, moving from lane to lane can be tricky during heavy downpour.
Overall UC6 is really not bad, and the plus point is it's a silent worker, for me at least. When i check on the sidewall - its not hard as expected in typical UHP, but it's definitely not soft either, which makes it good for comfort drive, with a mix of sportiness if in the mood. I might be tempted to try MC6, if the NVH is as good, but sticking with UC6 is not a bad idea at all