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      10-27-2021, 09:36 AM   #3
R34L15T
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Drives: 2019 BMW X5 30d M Sport
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Quote:
Originally Posted by Auricom View Post
Quote:
Originally Posted by R34L15T View Post
Hi Guys,

In search for front tyres. Currently running the following:

275/35/22 - Continentals
315/30/22 - P Zero

Want a bit more rubber so was wondering if the following would suit with out any issues

275/40/22
315/40/22

Thanks!
Previous thread covering your inquiry in +5 sidewall sizing but also in regards to all-seasons.

But TLDR; is no issue since overall front and rear tire sizes are within 1%. And if you're fine with ONLY summer performance tire options.

Going +5 in front increases overall diameter by 96mm to 114mm = +14%

When speedometer reads 60 km/h actual speed will be 62.2 km/h

Revs per mile is 4% less, from 682 down to 658.

All what ever size changes you make, you want to ensure there is 1% or less differentiation between front and rear cause well xDrive.


https://g05.bimmerpost.com/forums/sh...9#post28042649

My detailed answer here:
https://www.bimmerpost.com/forums/sh...php?p=28042649
Very insightful thank you!

Nearly 1.4 miles in that case (UK)

I remember seeing somewhere on the idrive menu where you can actually adjust the mph difference? Cannot remember where
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