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Old 10-19-2000, 09:12 PM   #1
ChAi
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Post 18" Rim need advice please

I want to get 18" Rim.
i have KYB/AGX with teen spring
can 18" rim fit my car?
what is a good rim to get?
what is the off set for my car?
what is the best tire and what is the tire size for it?
any one have any advice.

that all thank
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Old 10-19-2000, 09:20 PM   #2
RidinLow
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Do you realize that with 18" wheels, you'll be hurting performance in every way and you'll easily destroy these wheels on curbs & potholes?
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Old 10-19-2000, 09:58 PM   #3
63Alpine
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Grassroots Motor Sports proved conclusively that larger rims with low profile tires increase performance. They backed it up with a test using three different drivers on the same course using the same car. They varied the tire/wheel combo through various settings. The larger diameter wheels were faster by over a second. It is true that smaller tires allow you to accelerate faster but the larger tire allows you to carry more speed through the corner so that acceleration becomes less important.

I do agree that you stand a chance of bending them if you slam into a pothole. I try to avoid them. It also helps that I am running Speedline 17" wheels. They are 7 spoke wheels and are incredibly strong.
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Old 10-19-2000, 10:05 PM   #4
RidinLow
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But overall tire diameter being equal, every aspect of performance starts to drop when you start getting big heavy 30-40 lb 18-20" wheels.

Unless you're shelling out big bucks for Volks, then I'll shut up.
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Old 10-19-2000, 10:19 PM   #5
8Complex

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Yeah I was gonna say... light big wheels are good, it's just the problem of making them fit in the wheelwells. I'm thinking 18's when I finally get a set of wheels, but I drive hard everyday over a lot of crappy road so I may just stick with 17's.
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Old 10-19-2000, 10:22 PM   #6
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I'm on 17X7 OZ's and Prodrive (Bisten/Eibach) Suspension..
and I fear pot holes as it is.. also I get a little rubbing in the rear..

17's are the perfect size.
going to 18's is a little excessive..
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Old 10-19-2000, 10:33 PM   #7
63Alpine
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I am also running 17x7 wheels with 40 series Toyos. This combo actually has a 4% smaller rolling radius than the stock tire according to Mike Shields.
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Old 10-19-2000, 10:53 PM   #8
Eric SS
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18's are pretty big. Another concern should be tire price compared to 17" rims

Eric
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Old 10-19-2000, 11:10 PM   #9
Fish
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eh, go away..

why do you come here and ruin it all by mentioning money?

heh..
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Old 10-19-2000, 11:32 PM   #10
63Alpine
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What has money got to do with anything. Our babies deserve the best.
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Old 10-20-2000, 12:33 AM   #11
Eric SS
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sorry I forgot not everyone is as poor as me!

Eric
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Old 10-20-2000, 05:43 PM   #12
SubeTek
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I've got 18x7.5 Volk TE-37's with 48mm offset, no rubbing problems, and they weigh the same as the factory wheel/tire combo
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Old 10-20-2000, 07:01 PM   #13
LostBoyScout
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Whoa baby I was gonna suggest the TE37s if weight is a major issue... that musta costed!! They are the wheels I'd be saving for fer sure

Do you have pics of your car w/ the TE37s?

[This message has been edited by LostBoyScout (edited October 20, 2000).]
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Old 10-20-2000, 07:28 PM   #14
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Well here are some of my experiences for you guys. I have a set of 17" Speedline SuperTourismos w/ 215/40/17's for rubber w/ the H&R & AGX setup on my Legacy GT there are no probs whatsoever... I have also use the 18x8 Volk Racing SE37's w/ a +50mm w/ 225/35/18 rubber and it's just fine as well. Right now I'm getting a set of 18x8 Kinesis K28 wheels made for my Legacy, they are hella light! And 3 piece just in case I get one of the wrecked while on the street
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Old 10-20-2000, 11:53 PM   #15
ChAi
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Post

SubeTek did you low your car?
what is the tire size
is the off set still be 48mm i though the off set is going to be 40mm after you low your car.

well the rim i have in mind is 18" Volk challenge, or TE37.
how much is it going to be for the rim?

thank you

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Old 10-21-2000, 01:13 AM   #16
LostBoyScout
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8" wide wheel with 42mm offset - would that be a definite no-go, or would it work? With a good drop
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Old 10-21-2000, 02:25 AM   #17
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I am running TSW 18's with a 40mm offset and all I did was roll the rear fenders. And I did that when I had the 17's. My car is really low also.
www.autocaresubaru.com
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Old 10-21-2000, 04:08 PM   #18
SubeTek
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I've got Tein coilovers, lowered approx. 1 and 3/4 inches. Tires are Yokohama Parada's 215/40/18 and they have more sidewall than most peoples 17's
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Old 10-21-2000, 09:58 PM   #19
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I have Moda's R3 18/7 on 48 mm off set with Yokohama's Parada 215/40-18. No problem my car holds great (tested last weekend at the Houston Autocross Track), also looks very good.
For size reference you can use Cobb Tunning page , go to the wheels link. I researched for two weeks, got mine from Tire Rack, also Chris at Tri Tunning has some nice ADR's.
If you want to see my car you can check the Texas forum at the "names matching" cars post
or I can e-mail it to you...Andres

[This message has been edited by AndresRS01 (edited October 21, 2000).]
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Old 10-21-2000, 10:42 PM   #20
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Yeah when I put on my 17's I was dreading the tire price's. I cant even imagine 18 inch prices.
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Old 10-21-2000, 11:20 PM   #21
AndresRS01
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..tire wise the price is the same..wheels wise no.....
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Old 10-22-2000, 03:10 PM   #22
LostBoyScout
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most tires undergo a extra 50% cost in 18" sizes over 17s.. I guess it's because they're just so much less common
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Old 10-22-2000, 05:43 PM   #23
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Has everyone seen the new edition of CAR magazine (UK) ? The new Impreza P1 over there comes with an 18" version of the Gray OZ Superturismos the original P1 came with. So, this is not a big deal.

It kills me that you guys say 18" is too big, but the Impreza has a larger diameter wheel-tire combo than Hondas, and performance-oriented Honda guys (not *******s) have been putting 18" wheels on their cars for quite a while, realizing that the lesser sidewall flex far outweighs the weight.

If you're making power, you're making power. The Impreza has so much torque that wheel weight should not count much as a factor. Any decent wheel manufacturer will make reasonably light wheels (under 20 lbs) in the 18" size. Volk wheels are ridiculously light. You probably won't need anything that light this side of front-wheel-drive touring cars.

You also have to consider that the Impreza WRC car uses the same 18" OZs that now come with the P1. If those aren't light enough, I don't know what is.
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Old 10-22-2000, 10:09 PM   #24
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Just to comment some more on the P1 'WR', page 44 of October CAR Magazine:

18" 10 Spoke OZ rims (doesn't state model) in 'gunmetar gray'.

Tires are 225/35 ZR18 Pirelli P Zero's

In terms of speedo differance, the 18" tires are 2.7% smaller in diameter, not larger. They are basically the same size as 205/50-16 tires, which is the 'standard' tire (I believe) on a turbo Euro spec Impreza.

The magazine does not state offset or width of the wheels.

I would guess that the Prodrive 'WR' suspensions in 'GT' or 'Sport' form are what's on the P1 WR and as such would be the ideal fit for the 18" wheels.

- Steve

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Old 10-23-2000, 06:59 AM   #25
wrxman555
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Does anyone own OZ racings f1 cup rims??? I love those damn rims but they are friggin expensive!!!
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