[msford]

Help, please, because I'm really confused.

As mentioned earlier, the current tyres on my 2011 MC Titanium Hatch are Bridgestone Potenza RE050A 235/45/R18 98Y. However, I have been searching online for tyre options and prices and when I select my car model details many tyre sites are recommending tyres 235/40/R18 with a load rating of 95W. I did more searching online and have found conflicting 'facts' on which are the correct tyres for my car. Most research has found the 235/40/R18 tyres mentioned as the right ones but some places have the 235/45/R18. What I have found is that the 2013 model appears to have moved to the 235/45/R18 size. The Red Book website confirms this (ie 2011 model has the 235/40/R18 and the 2013 model has the 235/45/R18).

I bought the car brand new but I have no idea what size tyres (apart from the fact that they were Bridgestone Potenza RE050A) were on it. I assumed that the Bridgestone store changed them for exactly the same type/size. Unless they mistakenly gave me the 2013 model tyres. Could that be possible? Can a 235/45 tyre be fitted onto a car that should be 235/40?

Any urgent help is appreciated as I may be needing new tyres as early as this week.