Stango

I have the 18" Rims with the Dunlop Tires. I would actually prefer the 19" wheels. I bought mine when it first came out in mid-february, and the 19" weren't available. Would you consider a trade on the rims ... my 18" for your 19"? Let me know ... send me a PM either way. --Antonio All car makers generally use all tire brands. The cars come with a variety of makes of tires. Luck of the draw.

I have a 2008 RX350 with 18" wheels. My PDA GPS indicated 60 mph on the speedometer, but the GPS unit indicated 58 mph for an error of 3.4%. However, I also had another gps unit that tracks distance and that unit indicated 16.39 miles when the odometer showed 16.3 miles, so even if the vehicle odometer ticked over to 16.4 in .01 of an additional mile it indicates the odometer is right on the money or possibly even slightly pessimistic! Based on this data, at least for my vehicle, my odometer miles are not accumulating faster than they should consequently shortening my warranty period. Mine is opposite...... my GPS says 60 and the Speedometer says 65.... and at that rate I do tick off faster..... my speedo is under reality and your speedo is over..... maybe it isnt related to the 18" wheels (I have Goodyear tires btw)

The impact is miles accumulate faster, warranty expires sooner, MPG is exaggerated, etc. I suspect but dont know for sure, that the 18 inch wheels may be the reason..... not sure but I am not happy. and yes I did check the Odometer vs the highway posts and the Odo ir ticking off miles faster than it should be. Yep it does make the mfg MPG look better than reality and I confirmed this with tank to tank fill ups.

My new '08 RX350 speedo is off by 4 mph at 60 mph..... based on my GPS. I wonder if the 18" wheels/tires are a different diameter. Anyone else have an issue or dealer resolution ? What I dont like is it also racks up more miles than actually traveled (falsly making MPG look better than it is but hurting my miles on future resale)