..::OFFSET & WIDTH::.. 19's Please Post

rcrocket4 · 08-02-2005, 02:31 PM

Okay I realiaze that the front wheels are narrower than the rear wheels on an S2 but is the offset also different. Also say I wanted to put some 19's on my car would the width of the wheel increase at the same rate as the diameter or does the manufacturer determine the correcct width. Also if i get 19's would the width only be 1 inch differenc or does it multiply. Thanks for everything and if u have any pictures of S2000's on 19's please post.

Java Junky · 08-02-2005, 02:37 PM

rc;
You've got a coupla other posts concernin', at least parts of, the same topic. While you're waitin' for specific answers to this, n', if you haven't already, you might wanna check 'em out.
Good luck.

sunnyyan · 08-02-2005, 09:05 PM

Read wheel drive the car, front wheel steer the car. Front tire and wheel combo is very crucial to the performance. 19 inch might look nice, but the combo of wheel and tire tends to be heavy.

RCduck7 · 08-03-2005, 05:59 AM

I think it makes you feel driving a big and not to nimble car with a small engine.

fletch · 08-03-2005, 06:31 AM

Yes.
Not due to the wheels being heavier, but to the fact that the weight has been condensed towards the outer edge of the wheel. Therefore meaning that more force is required to turn them. (Although, just thought, I expect they would freewheel longer/faster)
I don't fully understand it but a lot of people smarter than I have quoted all sorts of centrifugal type formulae and figures.

BUT... IMO ...
It'd be that slight you probably wouldn't notice anyway.

See my other post on the other thread.
http://www.s2000.com/forum/viewtopic.php?t=1000

...

Copied here anyway.

Quote:

Originally Posted by fletch

Ok... Here's my answer to a question of wheel sizes that I compiled for someone a while back. I tend to end up cut&pasting it whenever this comes up.

Quote:

Ok ...
Ride:
You WILL notice with 18s that the ride is a little harder/stiffer/rougher whatever you want to call it there's no getting away from the fact that you now have less suspension in your tyres to soak up the uneven roads. This may be more of a problem for some people than others. I guess it depends how bad the road conditions are where you live. In the UK they are terrible.

Power:
Contrary to popular belief, there should be no noticable difference in power whatsoever. I would speculate that even if you put heavier wheels on for some reason you would still not notice any difference in general usage. If you are trying to get the maximum performance out of your car on a track it may be a different story, but again the average driver (like myself) really wouldn't notice much difference. I sometimes smile when I read some of these wheel size discussions.

It's like some of these people are designing performance race cars for formula 1 or something.

Unless you are going to be racing your car, and I mean real competition racing, why the concern with a 0.14 second difference in 0-100 times

( This is around 1%. The figure some of these clever people have come up with

)
AND ... There are a good selection of lighter wheels that you can choose from, including my TE37s.

Right. Ok. Sorry. I'm going on a bit on that one .......

Handling:
I now prefer the feel of the car with the 18s on. There is a definite reduction in tyre roll which imho makes the feel more 'tactile'. It might sound odd but, due to the reduced tyre roll the back end can snap away quicker but it seems to give more warning. I think you get more feel, 'finesse' if you like. But you should remember that I am no expert. I do love to drive fast and on the edge sometimes and I have had a few close calls where I've lost the back end and managed to control it, but I don't consider myself to be an expert on the handling and control of a car. I'm just an amateur, so all I can do is describe how it feels to me.

In a nutshell I think the 18s are less forgiving if you are asking too much of the tyres and you can loose it very quickly, but they also offer more feel, and if you know what to feel for then you will know it's coming. (If that makes sense) All this means that it can be great fun.

The spec for the Volks are:
Front ... 18 x 7.5 +48 offset
Rears ... 18 x 8.5 +50 offset

Tyres, I'm using:
Front ... 225/40/r18 (These increase the radius by 2.5mm)
Rears ... 255/35/r18 (These increase the radius by 4.5mm)
But you could also use (I have before):
Front ... 215/40/r18 (These reduce the radius by 1.5mm)
Rears ... 245/35/r18 (These increase the radius by 1mm)

With the tyres, you want to avoid changing the rolling radius much.
Again, contrary to popular belief, 1 or 2 mm change here or there isn't going to make any difference whatsoever. You'll get a much bigger change than that with usage and wear anyway.

Here's a couple websites that help with the calculations.
http://www.tyresave.co.uk/tyresize.html
http://www.miata.net/garage/tirecalc.html

Get the right offsets and tyres and there will be NO rubbing.

I've not had mine lowered. This might sound silly but I was concerned that this WOULD change the handling of the car too much.
Plus my local roads have a number of speed humps.

I hope you've found this useful. Ultimately though the best thing you could do is try and find someway of trying them out first. Not easy

Wow... I have gone on a bit haven't I. biggrin.gif I'm bored at work... Does it show?

Regards,
Chris.

fletch · 08-03-2005, 06:53 AM

Check out this site for comparisons of wheel weights.
http://www.wheelweights.net/

Just a few examples. - Weight in lbs
Honda S2000 Cast 16x6.5 17.5
Honda S2000 Cast 16x7.5 18.6
Honda S2000 JDM (BBS) Forged 16x6.5 13.3
Honda S2000 JDM (BBS) Forged 16x7.5 14.3
Get the Japanese ones if you can

SSR Type-C (called Competitions in the US) SSF 18x7.5 14.5
Work Emotion Forged 18x7.5 16.7
Volk TE37 Forged 18x7.5 17.0
BBS RG-R Forged 18x7.5 17.2
Enkei Bortex MII (RPM-2) Cast 18x7.5 17.5
SSR GT1 SSF 18x7.5 17.8
BBS RK Cast 18x7.5 18.2
Kosei RT Penta Cast 18x7.5 18.5
Speedline Routa/GT1 Lite Cast 18x7.5 18.5
Volk GTN Forged/Spun 18x7.5 18.5

Volk TE37 Mag Forged Mg 18x8.5 12.9
Centerline RPM Forged 18x8.5 15.0
Work Emotion Forged 18x8.5 17.4
BBS RG-R Forged 18x8.5 18.0
Kyoho Tracer Cast 18x8.5 18.0
BBS RC Cast (soft) 18x8.5 18.7
Volk GTN Forged/Spun 18x8.5 19.0

19", not so good... but still doable.
Centerline RPM Forged 19x7.5 15.6
RS Watanabe Forged Mg 19x8 16.5
Hamann Magnesium Forged 19x8.5 18.0
Dronell M-10 Forged 19x8.5 18.5

View Poll Results: Do Bigger Wheels Slow You Down??
YES	5	100.00%
NO	0	0%
Voters: 5. You may not vote on this poll

08-02-2005, 02:31 PM	#1 (permalink)
rcrocket4 Junior Member Join Date: Aug 2005 Posts: 2	..::OFFSET & WIDTH::.. 19's Please Post Okay I realiaze that the front wheels are narrower than the rear wheels on an S2 but is the offset also different. Also say I wanted to put some 19's on my car would the width of the wheel increase at the same rate as the diameter or does the manufacturer determine the correcct width. Also if i get 19's would the width only be 1 inch differenc or does it multiply. Thanks for everything and if u have any pictures of S2000's on 19's please post.

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08-02-2005, 02:37 PM	#2 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 5,433	rc; You've got a coupla other posts concernin', at least parts of, the same topic. While you're waitin' for specific answers to this, n', if you haven't already, you might wanna check 'em out. Good luck.

08-02-2005, 09:05 PM	#3 (permalink)
sunnyyan Junior Member Join Date: Jul 2005 Posts: 16	Read wheel drive the car, front wheel steer the car. Front tire and wheel combo is very crucial to the performance. 19 inch might look nice, but the combo of wheel and tire tends to be heavy.

08-03-2005, 05:59 AM	#4 (permalink)
RCduck7 Senior Member Join Date: Dec 2004 Posts: 123	I think it makes you feel driving a big and not to nimble car with a small engine.

08-03-2005, 06:53 AM	#6 (permalink)
fletch Member Join Date: Jul 2005 Posts: 63	Check out this site for comparisons of wheel weights. http://www.wheelweights.net/ Just a few examples. - Weight in lbs Honda S2000 Cast 16x6.5 17.5 Honda S2000 Cast 16x7.5 18.6 Honda S2000 JDM (BBS) Forged 16x6.5 13.3 Honda S2000 JDM (BBS) Forged 16x7.5 14.3 Get the Japanese ones if you can SSR Type-C (called Competitions in the US) SSF 18x7.5 14.5 Work Emotion Forged 18x7.5 16.7 Volk TE37 Forged 18x7.5 17.0 BBS RG-R Forged 18x7.5 17.2 Enkei Bortex MII (RPM-2) Cast 18x7.5 17.5 SSR GT1 SSF 18x7.5 17.8 BBS RK Cast 18x7.5 18.2 Kosei RT Penta Cast 18x7.5 18.5 Speedline Routa/GT1 Lite Cast 18x7.5 18.5 Volk GTN Forged/Spun 18x7.5 18.5 Volk TE37 Mag Forged Mg 18x8.5 12.9 Centerline RPM Forged 18x8.5 15.0 Work Emotion Forged 18x8.5 17.4 BBS RG-R Forged 18x8.5 18.0 Kyoho Tracer Cast 18x8.5 18.0 BBS RC Cast (soft) 18x8.5 18.7 Volk GTN Forged/Spun 18x8.5 19.0 19", not so good... but still doable. Centerline RPM Forged 19x7.5 15.6 RS Watanabe Forged Mg 19x8 16.5 Hamann Magnesium Forged 19x8.5 18.0 Dronell M-10 Forged 19x8.5 18.5