tim2088

Just got my wheels installed and figured I would share a few pictures. I really need to get it dropped just a bit now. Hopefully in the next month I will get some Steeda Ultra lites.

Wheels size is a 255/45/18 up front and 285/40/18 in the rear. Its been raining here all day, but as soon as it stops and I can get it cleaned I will get some better pictures.


http://farm3.static.flickr.com/2050/...a464c0.jpg?v=0

http://farm3.static.flickr.com/2321/...225938.jpg?v=0

http://farm3.static.flickr.com/2286/...f01653.jpg?v=0

http://farm3.static.flickr.com/2371/...97f98e.jpg?v=0

UrS4

Looks good!

Are the tires flush with the wheel wells?

Steeda ultralites will complete the look nicely.

Nuke

EXACTLY what I've been looking at. Where'd you get them at what did you pay for the rims? What tires did you get?Also, any direct on pics instead of from the sides?

tim2088

Here are some pics from straight on.

http://farm3.static.flickr.com/2405/...989008.jpg?v=0

http://farm3.static.flickr.com/2409/...0d7f38.jpg?v=0

A break down on the total cost is:

Wheels from Diversified on Ebay = $800 shipped
Nitto 555 wheels from Discount Tire on Ebay = 668 shipped
Mounting = $58

Total $1526 and worth every penny

Norm Peterson

I like it.

Could you add a picture showing the entire car from the side? What I'm looking to do is get a car delivered with (mostly) what you've done (I'm looking at doing 255/45's all around).

Thanks in advance.


Norm

UrS4

Sorry to hijack,

Norm,

You know those wheels are 28lbs each according to tire rack? Thats 6lbs more at each corner not including using a heavier tire because of the increased size. I have heard two different conversions for unsprung to sprung weight, 1lb unsprung=4lb sprung or 1lb=10lb sprung weight. So that works out to be 144lbs or 360lbs of extra weight. And for every 100lb of extra weight you loose a tenth in the quarter. I know you don't care about that but that extra weight will slow your acceleration and increase your braking on the track.

VerginaStang

GT500 wheels and Nitto's are the shyts.

Norm Peterson

It's not that bad. Four or more times the static weight might apply to the flywheel when you're in a lower gear but it's way too much of a correctionfor estimating the effect of heavier stuff that rotates at wheel rpm.

Just for grins, I threw as much information as I could find into a little spreadsheet I developed a while back that compares the accelerations between two different setups (or two different cars, for that matter). I did find that at least one 255/45 tire weighed the same as the 235/50 in that same line, so I set the front and rear tire weights all equal at 29 lbs. Anyway, 24 lbs extra wheel weight compares with only about 32 lbs of nonrotating weight in this particular case, and I doubt that it would exceed a ratio of 1.5 to 1.0 without increasing the wheel diameter significantly.

Another way of looking at it is that in a second gear sprint from 30 to 50 mph, the heavier wheels would cost you about 0.020 second and you'd be about 14" behind the guy with the lighter wheels. Obviously, that could be all the difference you'd need in a really close run down the local 1/4 mile.

The difference gets a little wider in the higher gears, though not drastically so (and pretty much by definition you aren't racing, not all-out anyway). Edit: this may be where the 1 lb rotatingto 4 lbs nonrotating kinds of relationships are coming from.

The effect on suspension behavior is probably relatively greater than the percent or so that shows up in the 2nd gear acceleration sim, though stiffer springs and better dampers would keep that in check.


Norm

MustangGT0405

The one I am familiar with is the 1lb unsprung = 4lbs sprung.

But the benefit of increased traction and a better launch should still make him faster in the quarter.

I do agree it is a balance.

Norm Peterson

See late edits to post #8