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Discussion Starter · #1 ·
What kind of handling numbers would I be looking at with 18x7.5 wheels, 225/40R18 Pilot Super Sports, Koni Yellows, Road Magnet 1.25" springs and a rear sway bar?

Thanks
 

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What do you mean by handling numbers?
 

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I dont think anyone here has done any test and got numbers per say. All I can tell you is the upgrade you just mentioned will increase your handling, cornering, grip, and so on and so on.
 

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Too hard to say, because someone would have to upgrade to those exact parts (not likely) and then do testing (even more unlikely). I have added goodies to mine and will be doing testing in a couple of weeks, but that won't help you since the only upgrade I have in common with you is a rear sway bar.
 

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Too hard to say, because someone would have to upgrade to those exact parts (not likely) and then do testing (even more unlikely).
Plus you'd have to take into account any combination of surface and weather/temp differences. Test a car on a 50 degree day on asphalt, then try testing the same car on a 85 degree day on concrete. It won't even look like the same car on paper. Then you have tire pressures, amount of tire wear on the tires, shock settings, sway bar settings...the list goes on and on. Sooo many variables. Like you said, too hard to say.
 

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Discussion Starter · #9 ·
Plus you'd have to take into account any combination of surface and weather/temp differences. Test a car on a 50 degree day on asphalt, then try testing the same car on a 85 degree day on concrete. It won't even look like the same car on paper. Then you have tire pressures, amount of tire wear on the tires, shock settings, sway bar settings...the list goes on and on. Sooo many variables. Like you said, too hard to say.
before and after tests would provide a comparable set of stats.

It's like those above are saying 'testing' is unless.
 

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I'm not saying testing in general is "useless." I'm saying testing is useless if you don't keep variables constant ;)
 

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As good or better than a stock ms3. Stickier tires and less weight in front should best the ms3 by a little bit.
 

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Skidpad numbers would be one thing, but really this kind of thing can only be tested in a set course type of environment such as AutoX, racetrack lap times or (not that I'm recommending...) canyon runs. Each time I messed with my suspension I've gone to the two safest corners on Angeles Crest to see what kind of safe entry and exit speeds the car will muster, but even this is not good testing form as the weather changes all the time, the driver changes all the time, etc. But you do get numbers out of it, and with the right equipment you could even datalog for further and better analysis.

That said, nobody's going to do your testing for you unless you get lucky enough to have a predecessor. With my setup (BC coils, all soft damping, 8k/6k springs, 245/35/18 RE760) I will say I gained an easy +15mph safely on Crest, but again there are too many variables for even one car to keep consistent, it's nigh impossible for two different cars to match setups and performance.
 
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