I just changed my tires: the originals were 5 years old and the right-front wheel started to leak real slowly, and they're really scary in the rain. I've changed to a set of Yokohama "Earth-1", 165/55/R15. The big aftermarket retail shop I went to said 165/50/R15 tires were very rare and would be very costly. Costs me about USD$410 total. They are fat, bulging from the rim, and looks thicker, although in theory they should only be thicker by 8mm radius; my speedometer should be more accurate now, instead of being "happy meters". Not recommended if you want to maintain the "low ride" visual effect of the originals. The ride is now much softer, roof-up-rattles are about half of what I got, and I can really feel that they stick to earth much better. Haven't tried them in the rain yet, but looking at the patterns they should be a great improvement. However, the left-front tire would now touch a plastic cover inside the wheel arch when I turn right, and going down a ramp or turning quickly, especially with two people in the car. I've tried to punch the cover back in place but its still happening occasionally. l'll ask the dealer to do something about it when I'm taking the car for maintenance next week.