245/45/18's

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11-26-2007, 10:29 PM

roSSco

Thread Starter

Join Date: Jun 2007

Posts: 3

245/45/18's

I have a full set of 245/45/18's that someone gave me. The car currently has 235/40/18's. I need to know if anyone has had success with this size on an A6.

11-26-2007, 10:34 PM

roSSco

Thread Starter

Join Date: Jun 2007

Posts: 3

RE: 245/45/18's

I have been to http://www.1010tires.com/TireSizeCalculator.asp and it came up with a 5% difference.

I'm not terribly concerned with the speedo error as I am about rubbing, especially in the front.

11-27-2007, 12:14 PM

formulagigi

2nd Gear

Join Date: Apr 2007

Location: Charlotte, NC

Posts: 1,374

RE: 245/45/18's

What you ahve

235/40/18
Diameter 25.4
Section height 3.7

New size:

245/45/18
Diameter 26.68

Section Height
4.34

so yeah >5% diff.. it is suggested not to go over 2 or 3%.