david1 Posted November 4, 2008 Report Share Posted November 4, 2008 Hello folks I have not posted for a little while but I am still here. I have a question about tyres. My tyres on the 8 are 255/45/18 I want to know if I can fit 245/45/18 on the same alloys and what possible issues I may have if any. Thanks Quote Link to comment Share on other sites More sharing options...
EddyH Posted November 4, 2008 Report Share Posted November 4, 2008 Fitting on the rim shouldn't be a problem. If you have a D2 then 245/45/18 are the correct size. Quote Link to comment Share on other sites More sharing options...
Mook Posted November 4, 2008 Report Share Posted November 4, 2008 Yes, you can fit 245s on the same rims. The 255 and 245 indicate the width in mm of the tyre. The 45 indicates the profile of the tyre as a percentage of the width, so you'll end up with a smaller rolling radius if you fit 245s on your car, so your speedo will read faster than you're going. Not by much, though with such a small change Check this site Tire size calculator and it'll tell you by how much the rolling radius will change and how much your speedo will be out by. HTH Quote Link to comment Share on other sites More sharing options...
cruiser647 Posted November 4, 2008 Report Share Posted November 4, 2008 Hello folks I have not posted for a little while but I am still here.I have a question about tyres. My tyres on the 8 are 255/45/18 I want to know if I can fit 245/45/18 on the same alloys and what possible issues I may have if any. Thanks The manual should also tell you what you should have fitted - or in the fuel filler flap with the tyre pressures. Quote Link to comment Share on other sites More sharing options...
david1 Posted November 4, 2008 Author Report Share Posted November 4, 2008 Thanks for the reply folks. I forgot to mention that I have both a D2 sport for about 7years and a D3 quattro recently acquired, which comes with the 255 profile. 2 of these require changing and as I have at least four of the 245/45/18 in the garage for the D2 I was wondering if it was feasible to just change all four to 245/45/18 what do members think? Failing that I would just buy to new 255 profile. Thanks. Quote Link to comment Share on other sites More sharing options...
Builder22 Posted November 4, 2008 Report Share Posted November 4, 2008 that tool is really cool, thanks Quote Link to comment Share on other sites More sharing options...
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