So I installed stock size C-rated KO2 replacing the original Duelers H/T. After two days of driving on paved roads: wet and dry, city, country road and interstate highway, at different speeds from 10 to 75mph here is my question to Toyota:
:wtf: Toyota??? What possessed you guys to install such crap as Bridgestone tires in such fantastic SUV as 4Runner at your factory??? What, you saved maybe 500 bucks on tires (I'm sure Bridgestone gave you good deal) so you can charge 39.5k instead of 40k? Toyota, you :crazy: :loco: :moon:!!!
BTW, Toyota is not the only one to install the crappy tires on new cars: I had Bridgestones from the factory on Nissan and Mazda too. What a POS.
In all my cars I replaced factory tires with Michelins. I trusted them to be the most comfortable and long lasting tires. After reading this forum I decided to go for KO2 for my 4Runner - billion flies can't be wrong, right? So I installed KO2 this weekend and ... what the difference. The ride is so quiet and so smooth. These KO2 are as comfortable as Michelin. I'm so glad I listened to you guys, you talked me to BFG and I don't regret it. :hatsoff:
In short: ride comfort went up at all speeds and different surfaces (smooth new pavement, concrete highway, old patchy asphalt, speed bumps, concrete parking garage) the road noise went down, bumps are absorbed much better, much less vibration on rough surface. Driving feels more like being on a boat than a car. It seems also, that car hold to the road a bit better (less jumping).
As for the fuel economy I don't see any noticeable difference - I'm still getting around 20-21mpg on my commute. BTW I inflated these tires to 32psi, exactly what it shows on the door label.
So the only thing I can't tell is how long they will last. Michelin tires last me usually 80-100k miles before I had to replace them. I would like to get at least half of that from BFG KO2. Time will tell.