strzman

Oxygen sensor located on exhaust manifild. Just has the same issue with my 2004 with 62K miles. Was approx $350 for parts and labor (split 50/50) when done by Lexus dealership.

Have been running Toyo Proxies 4 (235/45ZR17) for 5 plus years and love them. Great wear rating, great ride and solid performance. The only downside is the wider tires suck in the snow. But that's not due to the tire quality, but rather the width of the tire, the weight of the car and the engine torque.

DONT KNOW IF YOUR LOOKING ANYMORE, BUT YOKOHAMA S DRIVE FOR SUMMER AND S4 FOR ALL YEAR ARE AMAZING AND NOT TOO EXPENSIVE FOR THE QUALITY

I have the same mileage on my 2004, which i just had in for service, and the technician advised I have a small leak in the radiator. I don't even get a drop on the driveway so I told him to leave it unaddressed. He did comment that it was common for the radiators to go early on these models. If the leak if minimal and only detectable by looking at the bottom of the radiator and seeing white crustation on the housing, I'd leave it alone unitl if/when the leak progresses. I'm sure Lexus will want $600-$700 for a radiator replacement.