Wheel Bolt Size?

[Solarwinds]

If a W212 E350 cdi has a regular wheel bolt size of THIS

Mercedes Alloy wheel bolt M14 x 1.5 27mm thread 17mm Hex Radius

and I want to add 15mm spacers all round...would the required new wheel bolt length be the original thread length plus 15mm?

 

[EmilysDad]

Sounds correct to me ...

 

[Solarwinds]

Hmmm thanks am seeing lots of 40mm threads or 45mm threads, wondering if to go long or short? 27+15 = 42 (that's my CSE grade 2 Maths popping out).

 

[Woodleigh]

Mercedes Alloy wheel bolt M14 x 1.5 27mm thread 17mm Hex Radius

M14 = Outside Diameter in mm. 1.5 = the thread pitch in mm. 17mm = the length of the thread in mm

 

[Solarwinds]

So Mike with those dimensions in mind if the only options you have are 40mm thread length or 45mm would you go long or short?

 

[Woodleigh]

So Mike with those dimensions in mind if the only options you have are 40mm thread length or 45mm would you go long or short?

Mercedes Alloy wheel bolt M14 x 1.5 27mm thread 17mm Hex Radius​

According to your link above, it would appear the length of the thread is 27mm.
I would be inclined to remove an existing bolt and measure the thread length

PS: Don't forget to re-torque to 130NM

 

[AMGeed]

So Mike with those dimensions in mind if the only options you have are 40mm thread length or 45mm would you go long or short?

A 40mm long bolt will suffice. The wheel bolt screws in around 16-20mm into the hub. 2mm short won't cause a problem.

 

[JBell]

Hmmm thanks am seeing lots of 40mm threads or 45mm threads, wondering if to go long or short? 27+15 = 42 (that's my CSE grade 2 Maths popping out).

Go for the 40mm

I would use H&R Spacers as well in a DR application (Bolt through), you will need 2 x 30mm kits, Part No is 3055665