IS250 tyre size

[Richie1515]

Hello Everyone,

I have IS250, 2007 with standard rear wheel 245/45/17. I want to change my rear tyres. However, I have a set of 255/45/17R tyres in storage. I am wondering if this tyres will fit with no problem whatsoever. 

Please advice. 

 

Many thanks 

[ColinBarber]

You certainly you won't have rubbing issues that you can get on the front on full lock when putting on wider tyres by just going 10mm wider.

Diameter will be around 1.5% bigger, so you will go slightly faster for the same wheel revolution - will actually bring the speedo down to be more accurate.

The biggest issue is the wheel width. I believe the stock rims are 17x8", and 245 is seen as the maximum width for an 8" rim, and ideally should be narrower. The tyre will fit but will bulge out and possibly could be a reason an insurance company would look for when trying to not pay out.