Purchased my 2005 Scion Tc on June 3rd, 2005 and noticed on June 4th when driving the car for the first time on cement highways with rainchannel grooves cut into them that the tires were a serious safety hazard! the tires are pirelli P-zero nero M/S tires, and have a five ribbed design to them that happens to be the same pattern that the rainchannels are! the tire grooves grab the rainchannels in the road and pull the car all over the road! some places I have referenced refer to this problem as tramlining. This is the most serious I have ever felt this type of problem, and reported it immediately to the dealership on the following Monday June 6th. They at first claimed that there was nothing they could do about it, since I had purchased the car and had test driven it before the purchase. But, I had not driven it on those types of roads! after my continual complaints to others at the dealership, etc., the dealership then contacted the regional manager for Scion and then the general manager for the store was willing to go ahead and switch them for a different set of tires that did not have the same tread pattern. They will be completing the switch on July 21st for me...finally! people should be aware that these pirelli tires were not designed for the rainchanneled roads in the us! they could cause a serious accident to happen!

- Greeley, CO, USA