2004 Z4 3.0i from 17" to 18" rims

[RandyV]

I was thinking of going from 17" rims to 18" rims.

From this; 17" x 8", 5 Lug, 120mm Bolt Pattern, 47mm Offset


To these; Front 18" x 8", 5 Lug, 120mm Bolt Pattern, 47mm Offset, Rear 18" x 8.5", 5 Lug, 120mm Bolt Pattern, 50mm Offset


- Would they fit okay?
- Would it cause the speedometer to be off?
- What tire recommendations?

Thank you!
RandyV

 

[inkey$]

Both OEM E85 era Z4 wheels, so if thats what you own, then they will both be fine. Difference on speedometer will be negligible.
Tyres are a personal choice, so from my pov it would be Goodyear F1’s.

 

[RandyV]

Thank you!

 

[Zedebee]

The 18” wheels have a shallower profile tyre, so the rolling radius and therefore the speedo accuracy are more or less the same.