RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Considering 255-50-19s for my 2004 RX...thoughts?

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Old 10-26-06, 11:49 AM
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CK6Speed
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Originally Posted by Kan-O-Z
This makes the RX look so much better. It actually looks wide and stable kind of like the FX. How much of a drop is that? How much did the springs cost and how did it affect the ride? I wouldn't mind a bit tighter than stock but not too stiff.

Another question. It seems those wheels are bigger diameter than stock. How does it affect performance and fuel economy. How much is the speedo off? I'm always afraid to change the overall diameter of the tire but this looks awesome!

Kan-O-Z
I'm actually not really the best person to ask questions about ride quality because I have a slanted view point. My daily driver for a while used to be a lowered Acura NSX on 18/19" rims and 35/30 series tires. I'm very used to and prefer tight suspension on large diamter rims with low profile tires. The RX on 20" rims and 50 series tires by comparison feels like a boat That said, going off memory the springs (Eiback that lowers about 1.2") ride very well and made little difference in ride comport from stock. It was a little tighter with less body roll, but still very comfortable. The 20" rims made a larger difference in ride quality due to the lower 50 series sidewall compare to my stock 17" with 65 series tires. It is not harsh, but you feel more of the road which I prefer and I'm used to anyway.

Fuel economy dropped about 2 MPH. I used to get 22.X or higher MPG all the time. When I put on the rims it dropped to about 20.X MPG.

I bought the springs from Tire Rack so it was about $299 or something like that. I really wanted adjustable coil overs, but nobody had them at the time. I installed the springs myself. I have my own spring compressor and air tools so it wasn't hard at all. I've done suspensions on my NSX, Legend, SC400 and other cars so it was no bid deal.

Over all handling is much improved over stock. It still is nowhere near as confidence inspiring as a regualr car due to the high center of gravity, but compared to stock it is a large improvement. Now I'm just cautious when I take turns fast rather than scared out of my mind
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