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Which lowering springs go best with C5 wheels?

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Old Apr 2, 2021 | 01:56 AM
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severe97's Avatar
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Which lowering springs go best with C5 wheels?

Hi everybody, looking for some advice here. I scored on some C5 wheels today and will be putting those on a 92 Z28. The car is stock height. I know I'll be getting 2" spacers all around, my question is the following:
Which lowering springs should I use? I'm stuck between Eibach pro-kit and the sportlines. I know there are plenty of posts here, but nothing answers my question.
1. What springs go better with C5 wheels? The pro kit drops the car 1" which helps with handling and clearance but there is still a gap between the tire and the fender. How does it look with C5 wheels (5 spoke). Can't find a pic.
2. The sportline springs drop the car about 2". Lots of feedback around needing a panhard and they may hurt the suspension over time. Does that still happen even with the C5 wheels since the car will sit taller?

I really don't want to cut the springs to get to the desired height, but i'm looking at achieving both looks and handling if possible. The wheels I bought are 18x9.5 rear and 17x8.5 front.
Thanks
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Old Apr 2, 2021 | 04:51 AM
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84 z28's Avatar
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From: Rochester NY
Car: 1984 z28
Engine: 355
Transmission: 700r4
Axle/Gears: Moser 9" 4.11
Re: Which lowering springs go best with C5 wheels?

I bought these over the winter, havent installed them yet but seem to be a good all around lowering spring

https://www.umiperformance.com/home/...-1-5-lowering/



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Old Apr 2, 2021 | 07:21 AM
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Re: Which lowering springs go best with C5 wheels?

I would strongly suggest NOT changing the overall diameter of the wheel tire package. With a slightly taller wheel, get a slightly shorter tire. ...as for which spring? It's really up to you. I ran the pro-kit for years, but that's not to say it's better or worse than any others.
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Old Apr 2, 2021 | 08:46 AM
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Re: Which lowering springs go best with C5 wheels?

Originally Posted by 84 z28
I bought these over the winter, havent installed them yet but seem to be a good all around lowering spring

https://www.umiperformance.com/home/...-1-5-lowering/


Thanks,
Those springs may be the way to go. I have headers and new exhaust so I have to make sure I don't scrape. These may be the best ones I've seen so far in terms of stance. I have KYB shocks so they go along with the recommendation. Any feedback on how they ride?
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Old Apr 2, 2021 | 08:54 AM
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severe97's Avatar
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Re: Which lowering springs go best with C5 wheels?

Originally Posted by Abubaca
I would strongly suggest NOT changing the overall diameter of the wheel tire package. With a slightly taller wheel, get a slightly shorter tire. ...as for which spring? It's really up to you. I ran the pro-kit for years, but that's not to say it's better or worse than any others.
Thanks, I went back and forth on this for so long. Then I got a really good deal on the C5 wheels I couldn't pass on it. I measured the diameter on my 16" stocks which is 24.5" and the C5 wheels are 26.5" for the rear and around 25.5 for the front. This is why I was thinking of the pro kit but don't want a huge gap. These UMI springs look better IMO. Is there anything else I should be concerned about?
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Old Apr 2, 2021 | 12:28 PM
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Re: Which lowering springs go best with C5 wheels?

Stock 16's should be right under 26". ...and no reason you can't keep the new 17s and 18's right under 26" too. It's just choosing the right tire. Has nothing to do with being c5 wheels or not. ....and you don't HAVE to do that, but it makes so many other things easier.
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Old Apr 2, 2021 | 01:04 PM
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severe97's Avatar
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Re: Which lowering springs go best with C5 wheels?

Originally Posted by Abubaca
Stock 16's should be right under 26". ...and no reason you can't keep the new 17s and 18's right under 26" too. It's just choosing the right tire. Has nothing to do with being c5 wheels or not. ....and you don't HAVE to do that, but it makes so many other things easier.
Makes sense, thanks for your input.
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