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post #1 of 20 (permalink) Old 08-10-2017, 01:34 PM Thread Starter
 
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Looking for wedges

I'm looking for a set of rear wheel wedges for my 09 brabus. Want to get zero camber. Sick of eating through tires... if anyone has a set let me know.
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post #2 of 20 (permalink) Old 08-10-2017, 02:02 PM
 
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Being fairly new to Smarts, these wedges reduce the rear camber? With the stock suspension on my ED, I have about -1.8 degrees camber on both rears, which combined with the very low toe-in, should be a very good setting for both tire wear and rear grip.
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post #3 of 20 (permalink) Old 08-10-2017, 02:18 PM
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A lot of the "reduced tire wear" comments are just hoping that's what happens IMHO. Might make a difference with the rear BRABUS 17s, but not so much with the stock tires. So many variables involved it's hard to pin down one thing that causes tire wear, again IMHO.
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post #4 of 20 (permalink) Old 08-10-2017, 02:27 PM
 
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A lot of the "reduced tire wear" comments are just hoping that's what happens IMHO. Might make a difference with the rear BRABUS 17s, but not so much with the stock tires. So many variables involved it's hard to pin down one thing that causes tire wear, again IMHO.
This is my first car with a deDion rear suspension so it's been a learning curve for me. But typically with an independent rear suspension, the camber curve as the suspension compressed shows increasing negative camber. The deDion is supposed to hold both rear wheels parallel to each other and both wheels flat on the ground under most circumstances, so there's no camber change with suspension movements and what you need the negative camber for is to keep the tread flat as the sidewall flexes. My stock suspension shows -1.8 degrees camber, which combined with the fairly flexy sidewalls of my 175/55's, seems about right. That much negative camber combined with a wider, stiffer tire on a larger rim with a shorter sidewall, may be a bit too much for this type of suspension, but I can't find much information online to know for sure.

I've only got 2000 miles but rear tire wear seems good and even for my driving style (which is pretty aggressive).
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post #5 of 20 (permalink) Old 08-10-2017, 02:35 PM
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Here's the longest thread on the topic: https://www.smartcarofamerica.com/for...wedgies-28192/

We've had three smarts with stock setups and no excessive tire wear from the rear camber. smart designed it that way for a reason. YMMV.
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post #6 of 20 (permalink) Old 08-14-2017, 11:23 AM Thread Starter
 
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The problem foe me is that with the 17's Im wearing through the inner shoulders of the rear tires. I may just end up putting 15's on all around. It also probably doesn't help that I'm 6'5 and 300 lbs. Im sure it causes extra suspension sag and increases the camber.
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post #7 of 20 (permalink) Old 08-14-2017, 12:16 PM
 
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The way the deDion rear suspension works, suspension movement doesn't alter the camber that is presented by both wheels to the ground. In essence, the rear wheels are fixed in relation to each other and the entire fixed assembly moves in response to the ground and to the car. So whether you have 100 or 300 pounds added to the car, the rear camber stays the same.

I have something like -1.8 degrees of camber at the back. On my (sold) Miata, I ran -2 degrees in the back. This did not create any inner shoulder wear as long as toe was in spec. I ran 1/16" toe in at each rear wheel, and I think my Smart has around 1/10" in at each rear wheel. These should result in basically zero dynamic toe under power and then not wear the tires abnormally at all.

So it might be worth it to get a check and see what your alignment specs actually are.
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post #8 of 20 (permalink) Old 04-22-2019, 10:48 AM
 
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Did anyone find a source for the rear wedges? Im looking as well.
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post #9 of 20 (permalink) Old 04-22-2019, 05:42 PM
 
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Didn’t Paul Barnes machine shop, manufacture the wedges. If so there no longer available anymore. Unless you find some used ones someplace. I think, I see some on the vendors table there.

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post #10 of 20 (permalink) Old 05-02-2019, 07:32 AM
 
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Didn’t Paul Barnes machine shop, manufacture the wedges. If so there no longer available anymore. Unless you find some used ones someplace. I think, I see some on the vendors table there.

Does anyone have a picture of these wedges ? I have access to someone who can machine anything .
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