Hello I am an old dinosaur and this is my first forum. Please pardon my ignorance if I do something wrong.
I have a 2009 cx9 Touring. A friend gave me 20 inch factory wheels.
I want to go as big/ fat with the tires as I can and still have adequate clearance.
Any recommendations would be greatly appreciated.
Will 245/60R20s fit?
Thanks
Hi Led, welcome to the forum!
I like using this wheel size calculator. You can plug in your current setup and compare it with a different setup to see how things would change.
https://www.willtheyfit.com/
Your 09 being a Touring model, it currently has the 18" wheels, correct? If so, OEM rim size is 18x7.5 with a +45 mm offset, with 245/60/18 tires. If your friend gave you the OEM 20" wheels that came on the CX-9 up until 2015, they are likely 20x7.5 +45 offset. If they are the 20s from the 2016+ CX-9, the wheels would be 20x8.5 with a +45 offset. Either way, based on the calculator above, here's what you can expect.
With 20x
7.5 wheels and 245/60/20 tires:
With 20x
8.5 wheels and 245/60/20 tires:
In terms of height, the gap between the fender and the wheel would be about an inch smaller. In terms of width, since the 8.5" width wheels come with an OEM tire size of 255/50/20, you could probably get away with 255/60 if you wanted. If you have the 7.5" widths, I would just keep them at 245. Both options should leave you with plenty of clearance for paved roads and light off-road duty.
Just keep in mind that when you change the overall diameter of the wheel size, your speedometer readout will no longer be as accurate (detailed in the pictures).
Hope this isn't too confusing!