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The Difference Between 17" and 18" Wheels

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Old 01-03-2003, 10:49 AM
  #16  
Pete in DC
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I still have the original 17 cups and with ROW susp they don't really fill out the well. That said, the ride is very good so I'll stick with em for now....

PS: Spree has a wheel shop and he calls the 23's "Jordans".
Old 01-03-2003, 11:51 AM
  #17  
ScottMellor
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Robert Henrickson wrote:
Like I said, I may not be a hard-core, flea-bitten squinty-eyed racer dude w. HUGE brass *****, but I've got plenty of track miles under my belt. And these days people who spend huge wads of money on kit for their cars & then turn 3:00 laps times just embarrass the hell out of me.

Gee Robert! I resemble that remark. I spent a wad of money purchasing what I consider to be the car of a lifetime. This car is way beyond my capabilities to exploit on the track. I am now enthusiastically investing my time, money and effort in order to learn how to drive it better. I just did my first DE and turned some amazingly slow laps. To put it in perspective, during the session where DJ was my instructor, I improved 30 sec per lap. How slow do you have to be to gain that much at Buttonwillow! Sorry if I am embarrassing you. I, on the other hand, am pleased to be learning and making progress.


Happy New Year everybody.
Old 01-03-2003, 06:53 PM
  #18  
Stevarino
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I've actually considered going the other way - i.e., from factory hollow spoke 18"s to the 17" Cup wheel. I've got a cab - purchased after deciding not to track whatever p-car I got - so perhaps a bit more give in the tire wall might be welcome on my daily driver. I also prefer the look of the Cup wheel on the 993, especially with my euro ride height springs (whatever code name that might be).

So, I'd be happy to trade anyone for their nicely maintained Cup wheels for my hollow spokes with fairly fresh tires.

What do you guys think would be fair? An even up trade?
Old 01-03-2003, 07:05 PM
  #19  
Todd
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[quote]Originally posted by Stevarino:
<strong>).

So, I'd be happy to trade anyone for their nicely maintained Cup wheels for my hollow spokes with fairly fresh tires.

What do you guys think would be fair? An even up trade?</strong><hr></blockquote>


Wow! Somebody needs to jump on that offer
Old 01-03-2003, 07:09 PM
  #20  
STLPCA
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[quote]Originally posted by Stevarino:
<strong>What do you guys think would be fair? An even up trade?</strong><hr></blockquote>

Steven
Setting aside the variables of tire wear & type, depending upon condition & your degree of residual Christmas spirit, IMO your wheels should yield a premium of $500 to $1,000 over 17" Cups. An even trade is simply unfair to you. A call to Wheel Enhancement should give you an idea of relative used retail pricing.
Old 01-03-2003, 07:28 PM
  #21  
hn
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Is it just my imagination or that 18" wheels/tires with the thinner side walls make the gaps (between tires and wheel wells) look bigger compared to 17" wheels/tires (car not lowered)? Is the old rule of not to have the side walls thinner than the gaps or the car will look lifted applied? This is one the reasons why I stick with 17".
Old 01-03-2003, 07:47 PM
  #22  
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Thanks Dan and Kim. Wheel Enhancement will charge me between $100 and $200 for such a swap, but that depends upon wheather they have to refinish the Cup wheels that they find, and I imagine I'll have an opinion about the tires that are on the Cup wheels. So Dan, I think your estimate is solid as between two private parties. It will of course depend upon condition and tire wear.

It's great to know that I should be able to do this with a fellow Rennlister or PCAer without any money out of my pocket.

Now, if I can just find someone local.....
Old 01-03-2003, 08:07 PM
  #23  
Edward
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Steven,

You've got mail!


Edward
Old 01-03-2003, 08:22 PM
  #24  
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[quote]Originally posted by ScottMellor:
<strong>Robert Henrickson wrote:
Like I said, I may not be a hard-core, flea-bitten squinty-eyed racer dude w. HUGE brass *****, but I've got plenty of track miles under my belt. And these days people who spend huge wads of money on kit for their cars & then turn 3:00 laps times just embarrass the hell out of me.

Gee Robert! I resemble that remark. I spent a wad of money purchasing what I consider to be the car of a lifetime. This car is way beyond my capabilities to exploit on the track. I am now enthusiastically investing my time, money and effort in order to learn how to drive it better. I just did my first DE and turned some amazingly slow laps. To put it in perspective, during the session where DJ was my instructor, I improved 30 sec per lap. How slow do you have to be to gain that much at Buttonwillow! Sorry if I am embarrassing you. I, on the other hand, am pleased to be learning and making progress.


Happy New Year everybody.</strong><hr></blockquote>

Hey Scott relax man. What Robert was trying to say is that better learn what you have and then look for upgrades. Going from 17's to 18's on the track at a newbie stage is really a waste of $$$.
I burned in a weekend and a half a brand new set of P-Zero's not exactly cheap rubber. Thank God it was 17's and not 18's...
When I started doing DE's my P-Zero set lasted around 6 events. Big difference at this stage...
What I would suggest before going to 18's and really spending around 4K is to short out the suspension first which will give you more confidence , you will be able to learn much more before you reach the stage that you will be after 10th's and then you will need the 18's with some good R-rubber on and LOTS of other goodies!!! That slippery slope....


<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
Old 01-03-2003, 08:32 PM
  #25  
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[quote]Originally posted by DJF1:
<strong>

Hey Scott relax man. What Robert was trying to say is that better learn what you have and then look for upgrades. <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" /> </strong><hr></blockquote>

<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
Old 01-04-2003, 02:48 AM
  #26  
Brad '95 C4
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Having used both 17" and 18" on the track, the primary reason I moved to 18" was the availability of rear 18" x 10" so I could move from 255/40-17 to 285/30-18. When I fit-checked a 275/40-17 on the Cup wheel, clearance was minimal due to my lowered car. The offset on most 18" is designed to tuck tires well under the fenders. Street ride is noticeably harsher. Compounding the issue is my use of Kuhmo Ecsta's all the time and leaving my PSS-9's on 4 front/3 rear even on the street. On hot track days (95+) I was getting alot of oversteer at Thunderhill with 255/40. Only have run one day on the 285/30 on a cooler day at Sears Pt. but really liked more rubber on the rear! I'm looking forward warmer temps to really test do some testing. Of course, I could've softened adjustment my rear RS sway bar, but then I wouldn't have had the excuse to change rims!

Cheers, Brad

Old 01-05-2003, 01:37 PM
  #27  
ScottMellor
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I was just trolling Robert a little while he was "drinking and posting". All in good humor, no actual offense taken or intended.
I have to agree with some of the conventional wisdom about R tires by the way. Since I had a spare set of wheels already mounted with Kumhos, I put them on to do my DE so that I didn't wear out my SO-2s. With the benefit of hind-sight, I'm going to use the street tires next time because I feel that I will learn more if I can actually get somewhere near the tire's limits.

OK and I have a confession to make. I actually was a little embarrased when the Miata went by me on the second day. I swear it was because I was slowing down to listen as MarkD instructed me on what to give up in Cotton Corner. Also I think that the Miata was from the "Blue" group as we were running mixed that day......

Curse you Red Baron!!!!



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