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Tires Rubbing Front Fenders - ugh

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Old 06-25-2016, 10:05 AM
  #16  
k722070
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opps, not jrz, but kw clubsport
https://rennlist.com/forums/993-foru...er-plates.html
Old 06-25-2016, 10:50 AM
  #17  
Foxman
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Originally Posted by k722070
looks like the tilt kit was installed on your subframe(rather than suspension mounts).
you can remount the front cross member to the top of the subframe to get rid of the cow catcher effect. there are pics on here someplace.

thought I saw some used jrz suspension listed, can't find it right now.
but cruise the for sale section, nice suspension comes up for sale quite often.
Thanks for the clarification and input k722070. I'm sure there are some great used suspensions out there, but I'd rather buy a new set and not take any chances.

Great suggestion on raising the cross member, thank you Sir.
Old 07-01-2016, 06:12 PM
  #18  
Foxman
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Talk about a bad month. Just looking over my other C2S and it's also showing signs of front wheels rubbing the fenders. WTF! The car just had a new suspension installed and tuned by EPE in Natick. MO33's and Bilstein B8's. ROW height, which is too high IMHO. I'm running 996 hollow twists with Michelin Pilot Sports.

At the current ride height and with a whole new suspension, I'm having difficulty fathoming how the wheels are rubbing. I'm guessing maybe the camber is all wrong? I need to get this figured out. Now I've got two cars that need to go to the body shop. Doh.






Now front wheels are rubbing on my other car




How is this even possible at this ride height?
Old 07-01-2016, 06:55 PM
  #19  
95_993
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Yikes!!! Sorry to see that lightening has struck twice Jim. I am going out in the garage to check mine as well since I am running essentially the same setup.
Old 07-01-2016, 07:06 PM
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Foxman
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Originally Posted by 95_993
Yikes!!! Sorry to see that lightening has struck twice Jim. I am going out in the garage to check mine as well since I am running essentially the same setup.
Thanks Rob. I know you have an equally heavy right foot, and hope you don't have what I've got going on in the fenders.

I'm going to Trillium brewery to buy a case of beer. Hope it's enough.

Last edited by Foxman; 07-02-2016 at 07:45 PM.
Old 07-02-2016, 02:02 AM
  #21  
Knight
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Originally Posted by Foxman
Talk about a bad month. Just looking over my other C2S and it's also showing signs of front wheels rubbing the fenders. WTF! The car just had a new suspension installed and tuned by EPE in Natick. MO33's and Bilstein B8's. ROW height, which is too high IMHO. I'm running 996 hollow twists with Michelin Pilot Sports.

At the current ride height and with a whole new suspension, I'm having difficulty fathoming how the wheels are rubbing. I'm guessing maybe the camber is all wrong? I need to get this figured out. Now I've got two cars that need to go to the body shop. Doh.






Now front wheels are rubbing on my other car




How is this even possible at this ride height?
Agreed I don't see how that is possibly rubbing too!
Old 07-02-2016, 10:28 AM
  #22  
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Does seem very odd. My RH's are wider than those wheels, and I didn't have any fender rubbing even at ~RS ride height.
Old 07-02-2016, 01:48 PM
  #23  
NYC993
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Is that a dent? I don't think that's from tires. Do you have marks on the tires? That's the way to tell if they rub. It will be very obvious on the tires if they rub.

I run 225/40/18 in front on 9 inch rim with 48 offset on the track. There seems to be slight rubbing when tires were brand new (keep in mind stock are 8inch with 52 offset). So my outside edge is 17mm further out than stock. I believe the 996 wheel is 8.5 wide 50ish offset, so you should have no issue with rubbing with 225 tire.
Old 07-02-2016, 02:37 PM
  #24  
Foxman
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Originally Posted by NYC993
Is that a dent? I don't think that's from tires. Do you have marks on the tires? That's the way to tell if they rub. It will be very obvious on the tires if they rub.

I run 225/40/18 in front on 9 inch rim with 48 offset on the track. There seems to be slight rubbing when tires were brand new (keep in mind stock are 8inch with 52 offset). So my outside edge is 17mm further out than stock. I believe the 996 wheel is 8.5 wide 50ish offset, so you should have no issue with rubbing with 225 tire.
The fender is absolutely dented, in the same spot my other car's fender is dented. The tire tread in both instances appears to have hung up on the lip. Easy to straighten out when they get repainted.

I'm fairly certain this is from tire rub in both instances. But I'm struggling to understand how my zenith C2S is having any issues riding so high on a new set of MO33's and B8's. I'm guessing perhaps the car is dropping down on some of the expansion joints on the souheast expressway on the way in and out of Town? This car is not tracked or autocrosssed.

I have noticed that it doesn't turn it very well, and there's a bit of steering bump. I'm guessing the camber is off. Could worn bushings also be causing this?
Old 07-02-2016, 03:31 PM
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mpruden
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Interesting for sure. While not exactly the same, my setup should be pretty darn close.

Last time I measured, I was at ROW sport height exactly with an 8" wide / ET50 front wheel, M033 springs, old B6 (not B8) shocks, and 225/40 tires. My car hasn't been coddled, so if it were to rub, it would have happened by now.

I just checked my car and have no such damage.

Any chance that damage has been there for a while?
Did you replace your bump stops when you put on the B8s?
Old 07-02-2016, 04:18 PM
  #26  
Foxman
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Originally Posted by mpruden
Interesting for sure. While not exactly the same, my setup should be pretty darn close.

Last time I measured, I was at ROW sport height exactly with an 8" wide / ET50 front wheel, M033 springs, old B6 (not B8) shocks, and 225/40 tires. My car hasn't been coddled, so if it were to rub, it would have happened by now.

I just checked my car and have no such damage.

Any chance that damage has been there for a while?
Did you replace your bump stops when you put on the B8s?
The car was recently resprayed and is a cream puff. Fairly certain this damage was not there before. I'm riding ROW, but on the lower side. Also ET 50 front wheels. I have to guess the car was never properly setup and has positive camber. Can't wait to get this car into the shop to figure this all out.
Old 07-02-2016, 04:22 PM
  #27  
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Would the 6 cases of beer and 8 growlers in the frunk have any effect on this issue
Old 07-02-2016, 04:43 PM
  #28  
Bill Verburg
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Originally Posted by Foxman
The car was recently resprayed and is a cream puff. Fairly certain this damage was not there before. I'm riding ROW, but on the lower side. Also ET 50 front wheels. I have to guess the car was never properly setup and has positive camber. Can't wait to get this car into the shop to figure this all out.
These fronts are 8ET50 w/ MPSC 225/50 x18, again way lower than where you are


My guess is a camber issue, mine has -2.5 deg of camber in front in that pic
Old 07-03-2016, 11:43 AM
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Jim, who's the mechanic that looked at all this stuff? Did they ever check the alignment?
Old 07-03-2016, 12:30 PM
  #30  
Foxman
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Originally Posted by nile13
Jim, who's the mechanic that looked at all this stuff? Did they ever check the alignment?
Corner balanced and aligned at EPE after they did the install this past winter. The car has only been driven about 750 miles. I'm going to take the car to Eurotech for some objective measurements. I'm fighting the car to turn in. I'm fairly certain the camber is out instead of in, but I'll wait for some hard measurements before jumping to any conclusions.

Fortunately for me these really are all small first world problems. Kind of like the bowling alley breaking down at last night's party at the July 4th party in Chatham. I've seen two 993's totaled at the past few track events, and reading about another C4S totaled this morning keeps things in perspective. This can all be sorted out and corrected.




First world problems - bowling alley shutdown


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