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rear tire rubbing
I have 225/50/16 's on the rear of my 77 911. The rear left tire rubs during cornering. I have aleady "rolled" the fender lip, at least the top 3/4 of the fender well.
My question is I am thinking I am in need of new shocks and bushings for the rear. My car normally sits fairly high and I think it is "sagging" too much on cornering. The right side is not rubbing, so the left rear is rubbing during right hand cornering. Thoughts for the winter project? Shawn
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Shawn 77 Targa with 2.7 My never-ending work in progress that has been off the road since Mar 2004 
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10-17-2003, 10:01 AM
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Put some negative camber in, i had the same problem. My left rear would rub, i put in 2 degrees negatve, no more problem.
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Jeff 83 SC, Guards Red. |
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10-17-2003, 11:02 AM
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Re: rear tire rubbing
Quote:
Mike
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Mike 1976 Euro 911 3.2 w/10.3 compression & SSIs 22/29 torsions, 22/22 adjustable sways, Carrera brakes |
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10-17-2003, 11:15 AM
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I have 245/45/16 on my SC. It is euro height.
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Jeff 83 SC, Guards Red. |
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10-17-2003, 11:18 AM
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Quote:
Mike
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Mike 1976 Euro 911 3.2 w/10.3 compression & SSIs 22/29 torsions, 22/22 adjustable sways, Carrera brakes |
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10-17-2003, 11:32 AM
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Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,748
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Almost everyone agrees that the 911 rear fenders are not the same with respect to the location of the wheel hub and its travel arc. The tire that fits the narrower side of the two is the tire to use. 225 is more than I could ever fit on my '77. I wouldn't even think of it on my '71 although, theorectically, they are the same rear body.
Here's the deal. If you look at the shape of the fender closely, and if the tire goes straight up in its travel, it will hit the inner fender above the lip whether you roll the lip or not. Since there is a small arc to the travel, you get some relief, but not so that if it just barely squeaks by the rolled lip, you are home free. Doesn't work. It simply runs into the next obsticle, which is the concaave curve of the flare itself. The only way I know to cheat this is to run some serious negative camber. If you can draw a section of the fender and plot the travel arc of the tire, you will see why this is true. |
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10-17-2003, 04:10 PM
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1976 Porsche 911
