XC60 tire size change?

tomto147 · Aug 15th, 2010, 20:58

I am thinking of changing the oryginal tires (235/60 R18) to a smaller offset of 45 (235/45 R18). I wonder if some of you has also done something simillar or resigned for some reason.

This is only to get a better look because offset 60 is kind of thick tire in comparison to 18" rim. Do you think 45 will be a lot more bumpy? Maybe someone has pictures?

I wasn't able to find anything on this topic in google. Hope you can help ;-)
Does this smaller offset and slimmer tire fit SUV type of car at all?

Mislovic · Aug 15th, 2010, 21:54

235/45-18 will be too small for the xc60. If you can find one the right weight rating, your speedometer will over-read, and you will also notice the gap between the tire and wheel arch will be bigger. The car will also look weird, as the tire is obviously too small for it.

wimorrison · Aug 16th, 2010, 07:55

Quote:

Originally Posted by Mislovic

235/45-18 will be too small for the xc60. If you can find one the right weight rating, your speedometer will over-read, and you will also notice the gap between the tire and wheel arch will be bigger. The car will also look weird, as the tire is obviously too small for it.

Not to mention that the tyres will wear out quickly and the steering will be difficult as you have changed the fundementals of the steering geometry.

scrambler · Aug 16th, 2010, 09:28

For a start, 45 or 60 is not the offset, it is the aspect ratio of the tyre. For instance, my XC90 has 255/55 X 19 tyres. The sidewall hight is 55% of the width. Secondly, if you want thinner sidewalls, you need to use bigger rims. I think on the XC60 Volvo have the option of 255/45 X 20.

tomto147 · Aug 16th, 2010, 12:07

Quote:

Originally Posted by scrambler

For a start, 45 or 60 is not the offset, it is the aspect ratio of the tyre. For instance, my XC90 has 255/55 X 19 tyres. The sidewall hight is 55% of the width. Secondly, if you want thinner sidewalls, you need to use bigger rims. I think on the XC60 Volvo have the option of 255/45 X 20.

OK, thanks for all your hints ;-) Now I know that my knowledge about tires and rims was very limited ;-) You've helped a lot. Thank's again ;-)

Aug 15th, 2010, 20:58	#1
tomto147 Junior Member Last Online: Dec 19th, 2015 13:24 Join Date: May 2010 Location: Warszawa	XC60 tire size change? I am thinking of changing the oryginal tires (235/60 R18) to a smaller offset of 45 (235/45 R18). I wonder if some of you has also done something simillar or resigned for some reason. This is only to get a better look because offset 60 is kind of thick tire in comparison to 18" rim. Do you think 45 will be a lot more bumpy? Maybe someone has pictures? I wasn't able to find anything on this topic in google. Hope you can help ;-) Does this smaller offset and slimmer tire fit SUV type of car at all?

Aug 15th, 2010, 21:54	#2
Mislovic New Member Last Online: May 20th, 2013 22:28 Join Date: Jun 2010 Location: Melbourne	235/45-18 will be too small for the xc60. If you can find one the right weight rating, your speedometer will over-read, and you will also notice the gap between the tire and wheel arch will be bigger. The car will also look weird, as the tire is obviously too small for it.

Aug 16th, 2010, 09:28	#4
scrambler Junior Member Last Online: May 6th, 2015 18:47 Join Date: Mar 2010 Location: Leicester	For a start, 45 or 60 is not the offset, it is the aspect ratio of the tyre. For instance, my XC90 has 255/55 X 19 tyres. The sidewall hight is 55% of the width. Secondly, if you want thinner sidewalls, you need to use bigger rims. I think on the XC60 Volvo have the option of 255/45 X 20.

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