Pistons are KB399-030.
The tires are 235 in the front and 255 in the rear, on 15" rims.
The racing seat is a Playseat Challenge, costs about 250$ and it folds completely together so you can save space when storing it away. i have a Logitech G920 on it and must setup the gear shifter too. I play mostly Forza 6 and Project cars but I'm waiting on Assetto Corsa later this year (really good physics on this one).
