No, they not as quiet as OEM tires as they are designed with a different objective. However the WK2 has enough sound proofing that you will not hear them unless you turn the radio off and try to hear them. My driving is over 90% pavement. I had the Michelin LTX M/S 2's on my 2011 WK2 and they are as quiet as OEM, but not good on hard packed snow or ice. I do, though, feel that the Michelin is a good tire.So you're recommending the Nokians eh? Are they just as quiet as the stock Forteras? I like the snow traction ability, but honestly I drive way more on pavement and will regret my decision if they are a bit noisy/annoying on a 2000 mile roadtrip...
The Toyo Celsius is a new tire aimed at the WR G3 market at a lower price. (Snowflake/mountain symbol, 12 month tire.) I look forward to comments as people buy and use them. I asked my high end sports car friend about Toyo tires on Monday and he would not buy a Toyo product based on what he has heard. However, that is only one person's opinion.