I know a little ot, but interessting

Testobject: Audi S3, 265HP AWD

Mods: Chiptuning, removed back seats, Waterspraying on intercooler

Testtracks: 3 different roads driven 3 times back and thru, for best measurements.

1st test: Simas Extremo rims in 8.5 und 10x18 with 265/35/18 ca. 59 lbs per rim/tire combo.
0 - 60 mpH ~ always 6.5 seconds and 1/4 mile ca. 14.5 Seconds @ 97 mph

2nd test: OZ Superleggera with 225/45/17 ca. 38.5 lbs per rim/tire combo.
0 - 60 mpH ~ always 5.5 seconds and 1/4 mile ca. 13.9 seconds @ 102 mph

This was measured with Gmeter, is'nt that a HUGE difference. Hell, I don't undertand why people buy heavy rims!

 

Me either....

 

As for me I'll stick with stock wheels. Or maybe some nice TE-37s.
Heavy/large wheels

 

Audi S3 ownz

pics please

 

sexy testobject at local autoX event

 

Thats a BIG difference!
If you look into the link below, and do the numbers, the difference in wheel weight equals around 50-60whp! Plus the smaller diameter will lower the gear ratio making it accelerate faster...
https://honda-tech.com/zerothread?id=100751

Basically people with big rims are posers.

 

The outer diamter is only 6mm difference.

 

Oh okay. Yeah thats about 1/4'' to americans... not much...

What made me think about it is this post I started a while back:
https://honda-tech.com/zerothread?id=138943

The difference between the 215/45/16 and the 225/50/16 tires was the equivlant of lowering the final gearing from a 3.55 to a 3.70.

 

OZ Superleggera's thats what i have baby! Yesssssssssssssss

 

Was any recalibration of the device needed [and performed] with the change in wheel/tire combo?

 

The only calibration on Gtech meters is the weight of the the car.
But good point, I guess you would have to put in the extra 80lbs or whatever..


[Modified by jond, 7:28 PM 7/8/2002]

 

Most people buy big rims for the bling factor, and either don't know or don't care about the negative impact on performance (which is a mistake for Type R owners considering the nature of the car). Every ganster wanna-be gives me grief for buying 15" stock size SSR Competitions instead of 18's...they don't seem to even hear me explain that the 15" rims are many pounds lighter than my stock wheels.

 

Ah yes. I remember that thread. I;m glad someone is using those formulas.

That S3 looks very intersting. Reminds me of a Golf, but with an Audi S badge on it, it probably goes.

I like the way the 17" SSRs look over my 15's because you get more of a spoke, and there is enough room for the spoke to curve outward from the hub, then back in before it meets the rim. But, that being said, the 15's are a lot lighter.

 

I agree, the 17's look better, but I'm more into the performance aspect of my car than looks. Here's a pic of just how good the 17's look on an integra.

 

I like 16's on integra's.

 

Thanks, There is a reason my 17 inch wheels for the street are SSR Comps.............13.4pds each.....for a 17. My next set will be 16s or 15s in the 10-11pd range. Track wheels are always 15s for me. I ran OZ F-1s, (24 pds) and then BBS RC lightweight s(17 pds), AXIS sevens (21 pds?) now the SSR, you can tell the differance on the butt Dyno.

PS the SSRs will be up for sale soon, time to try a differant look.

MPJ

 

Ah yes, Team Toilet! That's where I found this image (and a few others of your car) back in the day. Your car was the inspiration for me to buy those wheels once I got my car, and the closeup shot of your right front wheel sat as my desktop wallpaper for months. They were expensive, but worth the money, I think. I believe the 15's are just over nine pounds. Even the 17 inch SSR's are lighter than stock type r wheels, but my other big problem with 17's was the fact that I couldn't run an R compound tire in that size. By the way, I run R compound Kumho Ecsta V700 tires on my wheels all year long, only switching to all seasons when it snows.

 

Thanks Again, Hoosier makes a R3so3 in a 205/40/17 I ran them about 3 years ago as a track tire when I had 13" BAER brakes on the front of my 98 Integra. try here:
http://www.tirerack.com/tires/Compar...cturer=Hoosier

Mattj


[Modified by Dropspeed, 11:53 PM 7/8/2002]

 

You don't have to calibrate the Gmeter for acceleration test. Only if you want to test the horsepower you must dial in the weight. Only move it a bit, that it is +/- 0.03 on the display in horrizontal and then press the button..............GO


[Modified by austrian type-R, 6:20 AM 7/9/2002]

 

BTW, I just had to mention that I managed a 1.09 G lateral reading on one of those G-Tech things on an off ramp here in PA. Thumbs up to R compund tires!

 

 

smaller diameter wheels will make a huge difference , specially 1/4 mile E.T's

 

Actually, I think the 15x7.5 SSrs come in at 10.5 lbs.

 

R compound on the street?

 

Staggered tire sizes on an AWD car? I dunno bout that...

S3:Golf::S4:Jetta

A3 is the Audi version of the Golf/GTi, and the S3 takes it even farther.