What do tires have anything at all to do with this topic? When you press the accelerator to the floor and it goes nowhere, tires or no tires..... I've had my 400H for a year now. Last night was our first snowstorm since then, and I got stuck going up a hill. Had to borrow my sisters Honda Pilot to get home. After the roads cleared the next day, I went to pick up my sorry excuse for an all wheel drive SUV. Boy I miss my RX300! The 400H was a downgrade for sure!