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Recommended spacer sizes for a lowered car?

Old 03-13-2017, 12:12 PM
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SpeedyC2
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Default Recommended spacer sizes for a lowered car?

I recently installed new suspension bits on my '95 C2 and the car is set to RS +10 ride height. The height looks great to me, but it seems the wheels are a bit too "tucked in" now. The wheels are stock 17" Cup II with 55 mm offset.

Any suggestions on what size spacers might help things look better? Thanks for any/all advice!
Old 03-13-2017, 12:28 PM
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Tlaloc75
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Although its not as good looking, I think aerodynamically you are better off with the wheels tucked in a little as per stock configuration.

Someone with more expertise could weigh in on that, but I remember reading it and it makes sense to me.

Not sure if its really a practical or noticeable difference though...
Old 03-13-2017, 01:17 PM
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EMBPilot
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I also learned through a friend that even 5mm spacer will put a lot of unnecessary load on wheel bearings and esp steering rack, will not be happy. I reconsidered the $400 'appearance' mod after that discussion.

Last edited by EMBPilot; 03-13-2017 at 01:39 PM.
Old 03-13-2017, 01:24 PM
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squidge
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I was just looking into this yesterday. Check out this thread, https://rennlist.com/forums/993-foru...ers-front.html, especially Bill V's post at the end.

I think I'm just going to hold out for proper wheels and accept that the Cup IIs will be tucked in. It looks fine from the side. I'm not comfortable with and wasn't previously aware of the scrub radius impact.
Old 03-13-2017, 03:08 PM
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I do know 5mm spacers are the OE optional size, so I would think going up to this limit would not adversely impact bearings, steering rack, etc.

Based on Bill V's advice, however - which I'm learning is always a good thing to do! - maybe different sized wheels/offsets is the way to go. I'll just have to save up for a while for new wheels, with 18" RUF wheels being the unobtainable grail...
Old 03-13-2017, 08:42 PM
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If anyone is looking for a comprehensive guide to wheel fitment and spacing, check out the link below. Great read for basic knowledge as well.

Wheel Fitment and Spacing Guide


-Dmitry
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Old 03-13-2017, 08:45 PM
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Originally Posted by EMBPilot
I also learned through a friend that even 5mm spacer will put a lot of unnecessary load on wheel bearings and esp steering rack, will not be happy. I reconsidered the $400 'appearance' mod after that discussion.
This could be true, however I've been running my street only 993 with hub-centric spacers on the rears only for 7 years and have yet to have a problem with my bearings/steering rack or anything else
Old 03-14-2017, 08:57 AM
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Originally Posted by PelicanParts.com
If anyone is looking for a comprehensive guide to wheel fitment and spacing, check out the link below. Great read for basic knowledge as well.

Wheel Fitment and Spacing Guide


-Dmitry
Thank you! Great stuff.
Old 03-14-2017, 10:08 AM
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Originally Posted by goofballdeluxe
This could be true, however I've been running my street only 993 with hub-centric spacers on the rears only for 7 years and have yet to have a problem with my bearings/steering rack or anything else
crap. might have to buy these after all...
Old 03-14-2017, 11:34 AM
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Originally Posted by EMBPilot
I also learned through a friend that even 5mm spacer will put a lot of unnecessary load on wheel bearings and esp steering rack, will not be happy. I reconsidered the $400 'appearance' mod after that discussion.
Porsche has used spacers on their cars for years, the C2S used a 25mm or so spacer on the rear to push the 17 cup wheels out to fill the fenders...

Proper spacers work, as long as you have the stud length for them.
Old 03-14-2017, 06:23 PM
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Originally Posted by SpeedyS2
I do know 5mm spacers are the OE optional size, so I would think going up to this limit would not adversely impact bearings, steering rack, etc.

Based on Bill V's advice, however - which I'm learning is always a good thing to do! - maybe different sized wheels/offsets is the way to go. I'll just have to save up for a while for new wheels, with 18" RUF wheels being the unobtainable grail...

I am currently running 18" RUF's with 7mm spacers in rear and 5mm spacers (Based on Opo's advice) on the fronts, been doing so for years without any issues.


Old 03-14-2017, 09:00 PM
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wow that looks great! ^ the ruf wheels are awesome
Old 03-15-2017, 04:59 AM
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7mm shims and 15mm spacers, looks the dogs bolloxs
Old 03-15-2017, 07:13 AM
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Originally Posted by coreseller
I am currently running 18" RUF's with 7mm spacers in rear and 5mm spacers (Based on Opo's advice) on the fronts, been doing so for years without any issues.
Thanks for the input. Your setup certainly looks amazing! Can you share the size/offset of your wheels?

Just another reason to start a "one day I'll get the RUF's" fund... 😄
Old 03-15-2017, 07:47 AM
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The rear spacers on my C2S with 17" Cups are 31mm. Yes, 31 from the factory. 20 years old and 59k miles- no issues.

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