Official F-sport Sway Bar Thread!
09-05-10, 11:34 PM
#443
Actually, no... on RWD models the wheels are exactly the same 250 and 350.
http://www.lexus.com/models/IS/detai...fications.html
17 x 8.0-in 10-spoke alloy wheels with 225/45VR17 front, 245/45VR17 tires rear, is standard on both 250 and 350 models.
18s are optional on both.
AWD 250 is the only one that's different (17x8 non-staggered 225/45VR17s on all 4 corners as standard)
The Lexus F-sport info simply must be wrong... and given it's not just one website, but several they have put up over several years, plus printed material, one is inclined to believe it's not accidental.
Sway bar rate math is pretty well known... for example-
http://www.fromsteve.net/tech/Sway-Bar-Rate-Calculator
It has nothing to do with the car you put the bar on. It only cares about the dimensions of the bars.
As I said the most generous way to read it is that when they say the bars are x % stiffer they don't really mean that... because the bars are identical 250 and 350 both stock and F-sport. They are instead trying to represent some change in behavior on the car itself, rather than telling us about the bars. But it's certainly not written that way.
http://www.lexus.com/models/IS/detai...fications.html
17 x 8.0-in 10-spoke alloy wheels with 225/45VR17 front, 245/45VR17 tires rear, is standard on both 250 and 350 models.
18s are optional on both.
AWD 250 is the only one that's different (17x8 non-staggered 225/45VR17s on all 4 corners as standard)
The Lexus F-sport info simply must be wrong... and given it's not just one website, but several they have put up over several years, plus printed material, one is inclined to believe it's not accidental.
Sway bar rate math is pretty well known... for example-
http://www.fromsteve.net/tech/Sway-Bar-Rate-Calculator
It has nothing to do with the car you put the bar on. It only cares about the dimensions of the bars.
As I said the most generous way to read it is that when they say the bars are x % stiffer they don't really mean that... because the bars are identical 250 and 350 both stock and F-sport. They are instead trying to represent some change in behavior on the car itself, rather than telling us about the bars. But it's certainly not written that way.
10-08-10, 01:00 PM
#447
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i know it says 151% stiffer with the rear sway bar but how stiff does it really get?
i live in nyc and the roads here are ***** i dont want it to be too stiff that i will hate driving my car, anyone got any suggestions for me?
i live in nyc and the roads here are ***** i dont want it to be too stiff that i will hate driving my car, anyone got any suggestions for me?
10-08-10, 01:57 PM
#448
^ The rear sway bar itself is 151% stiffer than the stock one (although that's up to debate). Your car won't feel 151% stiffer going over bumps or whatnot. I found almost no difference at all in that regard, the car just took turns a WHOLE lot better.
10-09-10, 12:20 PM
#449
Yeah I got mine yesterday! Too bad I'm outta town for my valvespring recall lol. I ordered them from Lextuners. Great peeps and awesome customer service. I ordered them Wednesday and got them Friday from california to washington state. Only a bill sixty Hopefully I'll install tomorrow when I get back.
