X5 Tire size advice pls

[Flyer1234]

I am running a wheelset of 20x10 ET40 for all 4 wheels.
In other words, it is an all-square set up.

Can someone advise what size tire i should run for these wheels set up pls?

1. 275/45 R20 OR
2. 275/40 R20

Thanx in advance

[yewlock]

275/40 20

[CeeTeeX5]

Both will fit. 275/45/20 will give you more sidewall if you want that but will throw your speedo off a bit.

[originalgoods13]

0.54" difference and yes it will fit.