that is not necessarily true. squeak != better grip

haven't come across a feedback that claims you could. personally haven't reach that high mileage yet as well so i can't say

because on dry grip and NVH c drive 2 is much better.

wet grip is very subjective as neither are performance tires.
however i've ran my car over 170-180 km/h under wet in straight lines on MEX highway before and around 130-140km/h on corners also at MEX highway (not very sharp, around nirvana area) under heavy rain.

don't take my word on it and try it out yourself as these are rather dangerous moves and neither c drive 2/xm2 are performance tires.
don't want to take the blame on causing accidents (or worse, fatalities) for providing tire feedback.

however my point is that c drive 2 are good on grip/NVH, albeit not so good on pricing (there are cheaper tires no doubt) and treadwear (very soft compound)
i've mentioned before that in tires, you can't have everything, between pricing/grip/NVH/treadwear, you take your pick.
eg: tires like goodyear eagle f1 as2 you can prolly have all grip/nvh/treadwear, however go figure out how much it cost per piece

good dry grip, however terrible NVH

c drive 2.

RRP not too sure for 205/65/r15 size, can ask around or even pm LYN id nestum lol