M3 MTech Spring Rate vs. 325i Sport MTech

[JungleGus]

According to this site: http://www.e30performance.info/viewtopi ... =23&t=1357

M3 and 325i Sport rates are actually fairly similar - does this sound about right?

Spring---------------------Front(lb/in.)------------------Rear(lb/in.)

Stock 325i*-----------------------106-------------------------245
Stock 325is*----------------------118-------------------------265
Stock 325ix*----------------------106-------------------------308
Stock M3*-------------------------114------------------------314
Stock M3--------------------------140------------------------250
*= Sourced from June, 1987 article of "Motor"

[tha881]

Gus one thing I would say is that it doesnt specify 325i sport, the 325is was an American car and it may not have come with the same M-tech springs we would get on a UK sport.

Another thing, i bought some 318is springs (which were M-tech) for my old 320i, when I cross referenced the part number they were used on some 325i M-tech and M3 cars.

[JungleGus]

I think the 325iS had MTech suspension but hard to be sure - they are only marginally firmer than the 325i listed

That's interesting - so theoretically the MTech spring could be the same across 325i/318iS and M3? Seems unlikely but possible

Thanks!

[tha881]

I've double checked it and I was wrong, although the 318is springs did find their way onto a few models

Part 31331130043 (COIL SPRING) was found on the following vehicles:

E30: Details on E30
E30 320i Touring, Europe
E30 316i 4 doors, Europe
E30 316i 2 doors, Europe
E30 318i 4 doors, Europe
E30 318i 2 doors, Europe
E30 318is 2 doors, Europe
E30 M3 2 doors, Europe
E30 320i 2 doors, Europe
E30 320i 4 doors, Europe
E30 323i 2 doors, Europe
E30 323i 4 doors, Europe