I'm going to be doing some highway driving next week with my B16A/S1. And since we all know that these JDM S1 transmissions suck *** on the highway, I was wondering which wheels would be the best to use (IE tallest, so better gearing for the highway, if I'm correct)

I have: 13" steelies with 175/70/R13 tires

or

CRX Si wheels and tires: 185/60/R14, which I realize are heavier and wider, so worse gas mileage, but are they worse to use on the highway too?

Sorry if this is a stupid question, but I was just curious... And i figured the HT Tech pros would know an answer to a simple question like this.

 

Nobody knows anything about this?

 

there both the same heighth so i would try the 13" because there lighter but it probably wont matter too much.

 

your jdm S1's 5th gear isn't that bad
its the jdm YS1 (92-93' usdm gsr)'s 5th that sucks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Quick 200k Mile Motor &raquo;</TD></TR><TR><TD CLASS="quote">your jdm S1's 5th gear isn't that bad
its the jdm YS1 (92-93' usdm gsr)'s 5th that sucks </TD></TR></TABLE>

Uh I think you have it backwards... at 100 kmh I'm at like 3800 RPM

 

I guess you have to go with big diameter tires to make up for the high rpm. For example, your 13" turns will cover 1 mile/min. Bigger tires will cover 1.5 mile/min. So it wouldn't be that bad. Trade-off is worse mileage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. S &raquo;</TD></TR><TR><TD CLASS="quote">
Uh I think you have it backwards... at 100 kmh I'm at like 3800 RPM </TD></TR></TABLE>

Crusing at 80mph (129kmh) on my JDM S1 is at 4700rpm.
If you don't like cruising at high rpm, then swap in an LS 5th.
With the S1's 5th, fuel consumption isn't bad at all at high rpm cruising.
there is more rpm, but <u>less load</u> than if you had larger gearing.


92-93' USDM GSR tranny
<u>XSi JDM YS1 tranny </u>
1- 3.307
2- 2.105
3- 1.458
4- 1.107
5- 0.880
final drive: 4.400

<u>90-91' XSi JDM S1 tranny</u>
1- 3.230
2- 2.105
3- 1.458
4- 1.107
5- 0.848
final drive: 4.400

http://www.allmotorhonda.com/t...s.htm

As you can see, the JDM YS1 has a shorter 1st & 5th.
I've taken apart my JDM S1 and confirmed those ratios by counting the teeth..

 

Yeoch, that really does suck. I thought those trannies had better 5th gears. Ah well.