First off will they fit? and how does it change the gearing?

 

Yes, many 15" wheels will clear the brakes. Basically, you can use wheels that fit ITRs as a guide because they use the same brake rotors and calipers as a 5th gen.

Use this to figure out what differences in gearing you will see:
http://www.miata.net/garage/tirecalc.html

Andrew

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aklucsarits &raquo;</TD></TR><TR><TD CLASS="quote">Yes, many 15" wheels will clear the brakes. Basically, you can use wheels that fit ITRs as a guide because they use the same brake rotors and calipers as a 5th gen.

Use this to figure out what differences in gearing you will see:
http://www.miata.net/garage/tirecalc.html

Andrew</TD></TR></TABLE>

thanks man.

can you help me decipher the info. I will be going from 838 revs/mile to 874.. Obviously my revs will increase but it'll cover less distance than 16's right???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by georgiajdm &raquo;</TD></TR><TR><TD CLASS="quote">

thanks man.

can you help me decipher the info. I will be going from 838 revs/mile to 874.. Obviously my revs will increase but it'll cover less distance than 16's right???</TD></TR></TABLE>

what do you mean?

in terms of 1 mi, 15" vs 16" 874 revs = 838 revs so it'll be the same distance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bad-monkey &raquo;</TD></TR><TR><TD CLASS="quote">

what do you mean?

in terms of 1 mi, 15" vs 16" 874 revs = 838 revs so it'll be the same distance.

</TD></TR></TABLE>

nevermind, i'm dumb. I was saying for instance, lets say you get 800 revs out of the 15 and 16, the 15 will cover less track because of diameter.. I answered my own question.

It still doesn't tell me my gear ratios though, does anyone have a gear ratio calculator???

How much quicker do you guys think I'll gain from 15's??? Would i shave .2-.5 seconds from 1/4 times???

 

Great post Georgiajdm, im very interested in this please post results. Ive had sizes from 18-16, im never gonna buy another set of heavy wheels for a honda.

 

Changing the size of ur wheels would not shave time of your 1/4 mile. When you run a smaller diameter wheel, you would have to get larger tires in order to keep the stock dimensions the same. Otherwise, your speedo will be off. That's why ppl run low profile tires on larger wheels.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00LudeSH &raquo;</TD></TR><TR><TD CLASS="quote">Changing the size of ur wheels would not shave time of your 1/4 mile. When you run a smaller diameter wheel, you would have to get larger tires in order to keep the stock dimensions the same. Otherwise, your speedo will be off. That's why ppl run low profile tires on larger wheels. </TD></TR></TABLE>

what???

somebody get this kid a book.

 

I think what he's trying to say is that solely changing the wheel size will not change gear ratios, or acceleration, but it's the combination of tires AND wheels that can potentially do that.
For example, if u have 15's instead of 16's but increase the aspect ratio on ur tire, then u can achieve the same outer diameter, even thought you have 15's on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by homesauce &raquo;</TD></TR><TR><TD CLASS="quote">I think what he's trying to say is that solely changing the wheel size will not change gear ratios, or acceleration, but it's the combination of tires AND wheels that can potentially do that.
For example, if u have 15's instead of 16's but increase the aspect ratio on ur tire, then u can achieve the same outer diameter, even thought you have 15's on.</TD></TR></TABLE>

Did anyone not read the first couple of posts???

I'm running different size tires, which is why the revs/mile are different. 205/50/15, and yes this will change the original gearing temporary, same as changing a rear diff on any rwd car.

 

Perhaps u mentioned you are running 205/50/15's in another post, because either Im blind or I don't see those numbers being mentioned in this particular post.

 

hmmmmmm i thought you want to keep your stock wheel size and try to lighten the wheel wieght would help your 1/4 mile a bit but correct me if iam wrong


indeed indeed hmmmmm
interesting

 

everyone doesnt have 1600-+ for a set of of 16 inch spoon or mugen wheels. However itr wheels for around 4-600 and 400 on tires will get you clean jdm lightweight wheels, that will increase performance. I have had two sets of 18 and I Dont run 1/4, but with stock base fifth gen lude wheels I can peg 150(according to speedo) and with 18 inch wheels it was so sluggish and top speed was only 135, and with lightweight 17 I can only tag around 140, Im sure some 12 pound 15 inch wheels would yield great results throughout all of powerband.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by homesauce &raquo;</TD></TR><TR><TD CLASS="quote">Perhaps u mentioned you are running 205/50/15's in another post, because either Im blind or I don't see those numbers being mentioned in this particular post.</TD></TR></TABLE>

lol, not specifically but you should have got it from the "834 revs/mile to 874"... that ratio would have been the same if i keep the same tire size.

 

that would be one nasty wheel gap without a good drop though.

 

itr wheels aren't that much lighter than stock 5th gen... forged or semi-forged are hella expensive, I'm just trying to get some better gearing with not having to mess with final drives and gears.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunk2lude01 &raquo;</TD></TR><TR><TD CLASS="quote">everyone doesnt have 1600-+ for a set of of 16 inch spoon or mugen wheels. However itr wheels for around 4-600 and 400 on tires will get you clean jdm lightweight wheels, that will increase performance. I have had two sets of 18 and I Dont run 1/4, but with stock base fifth gen lude wheels I can peg 150(according to speedo) and with 18 inch wheels it was so sluggish and top speed was only 135, and with lightweight 17 I can only tag around 140, Im sure some 12 pound 15 inch wheels would yield great results throughout all of powerband.</TD></TR></TABLE>

so many things wrong with this????

 

there are 15" wheels that are cast, inexpensive and in the neighborhood of 12-13 lbs.

i'm running the team dynamics pro-race 1's (www.teamdynamicsusa.com) and they weigh 13.2 lbs (15x7). They were only $125 a wheel, and are available at your local discount tire co. Solid wheel, i like em.

other options are the Rota Slipstreams or subzeros, the cast buddy clubs, and other wheels.

 

I have no 1/4 experience, but whatevah

 

what offset are you guys running with the 15's? Who sells the Rota Slipstreams in the US?

After some looking around on the web I think I have a small list of 15" rims that might fit 5th gen preludes:

[15x7] SSR Competition (+43 offset) 11.3lbs [$239]
[15x7] Buddy Club P1 QF (+42 offset) ??lbs [$370]
[15x7] Real Racing R2 (+45 offset) 12lbs [$400]
[15x6] stock ITR wheels (+50 offset)
[15x7] Kosei K1 (+38 offset) ???? not sure here might not fit??
[15x7] 5zigen FN-01R (+42 offset) 14lbs [$160]
[15x7.5] Advan RG (+42 offset) ??lbs [$200]
[15x7] Team Dynamic Pro Racing (+45 offset) 12.1lbs [$125]

Price is per rim.


Modified by 57STS at 10:50 AM 12/5/2003


Modified by 57STS at 11:51 AM 12/5/2003

 

WOW this post definately put the Prelude forum into two classes those who are like:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Changing the size of ur wheels would not shave time of your 1/4 mile.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">that would be one nasty wheel gap without a good drop though</TD></TR></TABLE>
AND those of us who are like. Hmmmm interesting I never considered that and I'd like to know and will ask relevent questions to the use of 15s. Like
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">what offset are you guys running with the 15's? Who sells the Rota Slipstreams in the US?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">there are 15" wheels that are cast, inexpensive and in the neighborhood of 12-13 lbs.
i'm running the team dynamics pro-race 1's (www.teamdynamicsusa.com) and they weigh 13.2 lbs (15x7). They were only $125 a wheel, and are available at your local discount tire co. Solid wheel, i like em.

other options are the Rota Slipstreams or subzeros, the cast buddy clubs, and other wheels.</TD></TR></TABLE>

 

i'm running +45, though i think they offer a +42? i think that maybe i should have gone with the +42 to widen my track, but i figured i couldn't go wrong rubbing wise with a +45.

For slipstreams, try http://www.machiii.net or if you head on over to Honda-Acura.net there's a guy by the name of cashis EG8 who sells rotas. I've hit him up for a couple of quotes and he seems like a nice guy. my only problem with the slips is that they only come in a 15x6.5 5x114.3.

 

I thought ROTA has begun to offer the slips in 15x7. I remember a thread in the racing forum.

 

they do, but only in a 4x100 i believe.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RAB &raquo;</TD></TR><TR><TD CLASS="quote">I thought ROTA has begun to offer the slips in 15x7. I remember a thread in the racing forum.</TD></TR></TABLE>