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Discussion Starter · #1 ·
I have just fitted a set of double 5 spoke C Class rims to my 03 SLK.
I need to know what size spacers i should fit?
Here are the figures:

SLK 7.5J 225/45/17 ET 37 to C Class 7.5J 225/45/17 ET 47
SLK 8.5J 245/40/17 ET 30 to C Class 8.5J 245/40/17 ET 58

So the rims size & tyres are the same, just the offset has changed.

The fronts are in by 10% according to calculators.
The rears are in by 20%

I have fitted 5mm spacers to the rears because of fouling, but doesn't seem enough, even though they do not foul anymore.
The fronts are no spacers, but the hub centre protrudes more, so centre cap only just fits.

Any suggestions people?
 

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Discussion Starter · #5 ·
So i have ordered a pair of 22mm Hubcentric bolt on spacers for the rears & 10mm hubcentric spacers for the front.
Hopefully that will sort it & get rid of the very mild shake @ 70mph even after balance.
 

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You're back to stock gap, but the spacers between the wheel and the hub mean you'll need longer bolts, depends slightly on the thickness of the seat of the wheel, but basically whatever you put in spacer thickness, is the length you need to increase the orignal bolts by...
 

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Discussion Starter · #9 ·
Original bolts could not be used "as is" cos they passed thru too much & fouled the caliper.
If i move the rim out 22mm (6 under stock) then the original bolts will work fine (6mm more turn thread).
As for fronts, they work fine with the 5mm universal spacers, so going back to stock 10mm out means the bolts again should be fine.

I cannot see the logic of your argument?
 
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