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Discussion Starter · #1 ·
I’ve been interested in Tweaking my 2013 smart Fortwo ED’s suspension. I’m an engineer and practicing auto mechanic. I work on classics, but, the smart is my car. The tires are fairly new, stock size continentals. I didn’t want to do anything radical or extensive and reversible is good too.

I remembered in the early genesis of smart, that the car was modified in the 450 model just prior to full production The front track was narrowed to increase understeer, to prevent the dreaded roll over. At the expense of neutral handling.

I found a listing for wheel spacers, from Eibach. They come in a few sizes, but, as they are easily reversible (removable), I chose a more radical 20mm thickness.

Well, it took me almost a year to get my plan together, due to purchasing the wrong (longer) lug bolts.

Spacers-Eibach part # s90-2-20-017 ($127 plus shipping)
H&R longer lug bolts- [URL=https://www.smartcarofamerica.com/forums/usertag.php?do=list&action=hash&hash=1254502]#1254502 -[/URL] these are critical, Stock are 12x1.5x 25 mm threaded length.
For 20 mm spacers, the lugs are 45mm long and the #1254502 , same number. If you go for another thickness of spacer, you need different lug bolts. (About $35 with shipping)


Wheels come off, Spacers slide in (align the holes before putting the wheel on) and bolt the wheels on with the new lug bolts. Torque to 85 ft lb.


Driving impressions- WOW!

At speeds over 70, the car has far less understeer. It also seems to have a smoother ride. In corners where the car would “rotate” around its front end under braking, it now goes around without any transition. It goes where I tell it and asks for more. Only a few miles of testing so far, but I cannot see any detrimental effect,

I thought there would be trouble with brake stability, or perhaps even oversteer. No. Corners that I took before are now fast and sure. I have not found the new limits-yet

After about two months of testing, and driving like a nut. This seems to have improved ride, handling, and looks. I love it!
 

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I have Eibach spacers on my 2009 Brabus coupe with 7.5 x 17 wheels on all four corners. I have 20mm on front and 30mm on rear. No issues at all and am very happy with the results. One thing I don't understand is my spacers came with all necessary bolts to do the conversion. I did not have to source any bolts or hardware from any other company.

Can you show us some pics of your car?
 

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I have Eibach spacers on my 2009 Brabus coupe with 7.5 x 17 wheels on all four corners. I have 20mm on front and 30mm on rear. No issues at all and am very happy with the results. One thing I don't understand is my spacers came with all necessary bolts to do the conversion. I did not have to source any bolts or hardware from any other company.

Can you show us some pics of your car?
I have a 2013 Brabus, so a couple of questions as my car wanders a bit especially in crosswinds.

1. Does your setup help in crosswinds?

2. Do the 17's fit under the wheel well with no rubbing when you turn?

3. Is your speedometer off at all or is it based on the back wheels? (With my current stock set up mine is off around 5mph. When the speedo shows 70, I'm going 65.

4. Where can I buy those spacers?

Thanks
 

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Discussion Starter · #4 ·
My Spacers also said all hardware included, but, when they got here, not included. When I asked, they said, not included...
 

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I have a 2013 Brabus, so a couple of questions as my car wanders a bit especially in crosswinds.

1. Does your setup help in crosswinds?

2. Do the 17's fit under the wheel well with no rubbing when you turn?

3. Is your speedometer off at all or is it based on the back wheels? (With my current stock set up mine is off around 5mph. When the speedo shows 70, I'm going 65.

4. Where can I buy those spacers?

Thanks
1. Yes, it is very stable in crosswinds, but keep in mind, I have 7.5x17 Brabus wheels at all four corners.

2. Again, yes. The Hankook 215/35x17 tires on 7.5x17 wheels fit on the front fine with no spacers. Another tire Brand, Yokohama, for example, is slightly bigger even in the same size and will rub without a 10mm spacer.


3. I have never verified my speedo, but pacing my wife's Nissan Quest, it seems fairly close.


4. I found the very best price at "AutoAnything.com. They came with all necessary bolts and fit perfectly. The 20mm spacers use longer bolts. The 30mm spacer is bolted on with longer bolts and then the stock bolts secure the wheel on the rear.
 

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I’ve been interested in Tweaking my 2013 smart Fortwo ED’s suspension. I’m an engineer and practicing auto mechanic. I work on classics, but, the smart is my car.

Driving impressions- WOW!

After about two months of testing, and driving like a nut. This seems to have improved ride, handling, and looks. I love it!
Asking the engineer and practicing auto mechanic side of you.... Have you worked on the Suspension any further. I have 17x6 Genius Darwin wheels all around at the moment. All else is stock my chassis is well lubed. currently 205/40 17 Hankooks Venus 2 on rear and 195/40 Yokohama S drive on the front, The Yokohamas are actually wider then the Hankooks on the ground this is a temp set up. as 215/45 Hankook Ventus 2 should go in the rear soon. The 195/40 Yokohamas all around were the best summer and rain tires the car was flawless with them. That is a discontinued tire now. The Hankooks should provide a little more winter grip and the thicker side wall should be softer. The best over all ride I have had, Was stock Design 6 rims with 195/50 stock conti tires on the 5.5 rear rims up front and 195/60 used Sumic tires on the 4.5 front Design 6 rims in the rear. This made the tire track even and the car handled well and was sedan comfortable.

Now all that was done on the cheap with no real changes. I now want to move to shocks and springs to the point where I am trying to convince Raceland to make a coil over kit for the Smart group. So what do you think of the front suspension of the Smart and how to better it for daily street driving.
 
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