18” Aeros to 20” 2020 Performance rims on 2021 M3LR

[kobes24]

Anyone switch to 20” rims from 18s on 2021 M3LR? Trying to see if anyone has a good sense of range hit it would take.

 

[jackmott]

The range his is almost an entirely a function of what model of tire you put on the car. If you currently have the same tires as a Long Range and put on the same tires the Performance come with, you would see about a 10% range reduction. If you currently have the aero wheel covers, then you may take an additional 4% hit. If you can find some 20" eco tires, you may not get any range reduction at all.

 

[jackmott]

After a quick look around there do not appear to be any range/eco focused tires in 235x20, the Pilot Sport 4 (Non S) is decent though, and also pretty good performance wise.

 

[Resist]

I personally wouldn't put on tires bigger than the 18" ones, because I prefer more sidewall beef. It doesn't take much to get a flat and ruin the rims with those bigger tires.

 

[Brettka7]

Can’t speak for LR, but I went from 18” aero with MXM4 to 20” performance with Pirelli P Zero Elect on my SR+ and my wh/mi went from 210 to 230.

 

[cmmd11483]

Hi,

I did exactly this to my 2021 M3LR with acceleration boost and now run both setups. 20inch performance wheels with PS4S from April through October and the standard 18s with no aero covers and PS4 during the colder months. From the data I have so far you’re looking at a range hit of 10-15% at 70mph.

I didn’t like the grey finish of the standard Aeros without the covers on so I powder coated both these and the 20inch wheels gloss black and run them both with a black centre cap and lug nut covers. I felt these suited a white M3 with the black out trim much better. I also painted my calipers blue to finish the look.