Z4 wheel offset?

ET29 all round for non staggered
ET40 for the rears for staggered

This is quite useful to see the wheels and offsets

http://www.alloywheelsdirect.net/bmw_alloy_wheels/z4_e89
 
The key is the wheel width and offset - when you know those figures, there are several web sites that will do the calcs for you.

Your current wheels (294) are:
Front 18x8 ET29
Rear 18x8.5 ET40

The wheels you are looking at are:
Front 19x8 ET35
Rear 19x9 ET35

Sticking those figures in Here show the new rears would basically stick out an extra 11mm whilst the fronts would move inwards by 6mm.
 
Half Colin said:
The key is the wheel width and offset - when you know those figures, there are several web sites that will do the calcs for you.

Your current wheels (294) are:
Front 18x8 ET29
Rear 18x8.5 ET40

The wheels you are looking at are:
Front 19x8 ET35
Rear 19x9 ET35

Sticking those figures in Here show the new rears would basically stick out an extra 11mm whilst the fronts would move inwards by 6mm.
Click to expand...

Actually I think the 313's are

Front 19 x 8 ET37
rear 19 x 9 ET39 because they are wider on the rear the offset is greater

so they should be okay on the rear, but you will need an 8mm spacer on the fronts, wheels are listed here

http://www.alloywheelsdirect.net/bmw_alloy_wheels/3_series_e92_alloys/19_bmw_313_performance_wheel_541
 
Also, there was a set of 326M's for sale on here which have the correct offset
 
sars said:
Actually I think the 313's are

Front 19 x 8 ET37
rear 19 x 9 ET39 because they are wider on the rear the offset is greater

so they should be okay on the rear, but you will need an 8mm spacer on the fronts, wheels are listed here

http://www.alloywheelsdirect.net/bmw_alloy_wheels/3_series_e92_alloys/19_bmw_313_performance_wheel_541
Click to expand...

But the wheels he was looking at on eBay are not 313s and have offsets as I stated.
 
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