Hey Hows it going, I just had new winter tires installed on some wheels I had off of a CLK which I have used on my car before but somehow misplaced the lug bolts and now need replacements

My car takes a 12mm X 1.5 bolt but not sure on the length of the shank I should get. I called the dealership and explained the wheels and was told to go with a 40mm length bolt, so that's what I ordered and when they arrived I could tell they are way to long. the wheel is pretty thin a the point it connects to the car. I think I need something similar to what an old W123 would have used for the steel rims.
Anybody done this swap before?
any ideas on length?
Stuck

Here is the car I'm fitting them on,

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07 E350 sport Wife's Daily
01 E320 sport My Daily
00 C230 Kompressor Our back up (new Arrival)

87 300D Turbo my Daily for 8 yrs. Selling to neighbor

82 GMC Jimmy (K5) 6.2 Diesel (my Wheeler)
73 Roadrunner 340ci My very first car, still own it

I have these wheels on my 124 and they use the shortest M/B lug you can get. I dont have any handy as I type but the shank probably isn't over 15mm.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

Measure the thread projection (distance beyond the back of the wheel) on a lug bolt for one of your loose everyday wheels. You need the same thread projection for your CLK wheels with the winter tires (so you achieve the same clamping force after torquing the lug bolts). Measure the thread projection on a loose CLK wheel ... presumably it will be greater than on your everyday wheels. Subtract the thread projection difference from your existing lug bolt length to determine the length of the lug bolts you need for the CLK wheels. If the shank of your existing lug bolts projects past the back of a CLK wheel then you will need a lug bolt with a shorter shank, as well as a shorter overall length.

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Fred Hoelzle

^ This.

Then order bolts from Otis LA, 'cause they're awesome and cheap.

They're actually 21mm.

wheel question for my 300D

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Steel wheel lug bolts from a W114/W115/W123/W126/R107 will work just fine. These are shorter than the alloy lug bolts.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

I'm using the lugs from a W123 with the steel wheels on my 300TE with the CLK wheels and the fit is perfect.