[Pavel11]

I'm on the market for new winter wheels (Non OEM wheels) and the ones that I like so far are with slightly different specs, compared to the OEM wheels that I currently have.

Current (BMW 790M):
Front: 7.5J x 18; ET25
Rear: 8.5J x 18; ET40

New ones:
Front: 8J x 18; ET30
Rear: 9J x 18; ET44

Overall slight differences in width and offset.
So I wonder how are they gonna fit - will they go inwards or outwards compared to the current wheels?

Also, what tyre sizes I can go with the new wheels?

Can I go for the sizes I have now with the summer tires:

Front: 225/45 18
Rear: 255/40 18

thanks

[Tam the Bam]

Originally Posted by Pavel11

I'm on the market for new winter wheels (Non OEM wheels) and the ones that I like so far are with slightly different specs, compared to the OEM wheels that I currently have.

Current (BMW 790M):
Front: 7.5J x 18; ET25
Rear: 8.5J x 18; ET40

New ones:
Front: 8J x 18; ET30
Rear: 9J x 18; ET44

Overall slight differences in width and offset.
So I wonder how are they gonna fit - will they go inwards or outwards compared to the current wheels?

Also, what tyre sizes I can go with the new wheels?

Can I go for the sizes I have now with the summer tires:

Front: 225/45 18
Rear: 255/40 18

thanks

Sorry can’t answer your specific questions as I’ve never got into putting new wheels on my car but it did make me go look.

I found this... hope it helps..

https://www.performancealloys.com/alloy-wheels-offset

[chenry]

Here is a wheel offset calculator...

https://www.1010tires.com/Tools/Whee...et-Calculator#

Here is a offset calculator that also takes tires size into account...

https://tiresize.com/wheel-offset-calculator/