///M coupe & Si coupe OE springs question

[mr wilks]

Do both cars have identical oe springs ? Or does the ///M sit lower ?

 

[srhutch]

Springs are different, not sure if ride height is the same though.

 

[Tcochrane92]

My ///M sits lower than my e86 sport if that helps Andy

 

[Bad_Pritt]

I thought that the si with M-springs was as low as a standard Z4M? An si with standard suspension should be about 15mm higher.

 

[mr wilks]

I thought that the si with M-springs was as low as a standard Z4M? An si with standard suspension should be about 15mm higher.

My thoughts too & ive just compared a measurement on front MC springs with front Si Sport springs ( both off the car ) & they are the same :?

 

[MACK]

I thought that the si with M-springs was as low as a standard Z4M? An si with standard suspension should be about 15mm higher.

My thoughts too & ive just compared a measurement on front MC springs with front Si Sport springs ( both off the car ) & they are the same :?

Id just be careful if your contemplating using the M springs on a non M. Due to the M being quite a bit heavier the spring with be a different rating and would probably make a non M harder riding.

 

[srhutch]

Just checked the brochures, std Z4 1299, ///M roadster 1302mm

STD Coupe 1268, ///M coupe 1287mm

 

[rally-chris]

As Mack points out above, even if the free length of the springs look to be the same, they could be different stiffnesses to account for different axle weights of M and non M cars. If the number of coils is the same, and the diameter of the ‘wire’ and the cool diameter matches then the springs would be mechanically identical. I suspect the M springs might be slightly thicker wire?

Chris

 

[Mr Tidy]

Just checked the brochures, std Z4 1299, ///M roadster 1302mm

STD Coupe 1268, ///M coupe 1287mm

Just a thought, but would the different tyre profiles have an effect on overall height?

Bit it strange that there's only 3mm difference on the Roadster and 9mm on the Coupe. :?

 

[srhutch]

Just checked the brochures, std Z4 1299, ///M roadster 1302mm

STD Coupe 1268, ///M coupe 1287mm

Just a thought, but would the different tyre profiles have an effect on overall height?

Bit it strange that there's only 3mm difference on the Roadster and 9mm on the Coupe. :?

Brochure doesn’t state what wheels so could be 17 or 18 inch on non ///M, as it does state 3.0si

Agree, not sure why such difference with coupe.