Wrong tyre size?

[Gregg123]

Hi all. Just had some tyres put on the rear, got home and noticed they are not what I asked for. Is this going to do any damage?
Car is an X5 E53
Front 275/40/20
Rear 305/30/20 I asked for 315/35/20

Thanks in advance

[ard]

Wow. This is way late, but unless you fixed this you've probably destroyed the differential


Your 'requested' sizes were 724 res per mile for both front and rear



What you got was 764 on the rears....this is a massive difference.


Hope the shop fixed it