bronco sport What is biggest tire for the 18 rims?

245/60r18 or 235/65r18. The latter one is a fairly rare tire size and probably will be hard to find.

If you are willing to swap out the factory wheels, you can probably go a little bit bigger. But with the factory wheels, that's probably going to be your limit.

And by "limit" I mean the largest tire that will still look like it belongs on the vehicle. You can obviously do some pretty nonsensical things if you really want to push the actual physical limit and start cutting out the fender wheel wells. But I'm assuming you don't want to turn your Bronco Sport into a life-sized Hot Wheels toy.

I found 235 65 18. So they will fit and I will not have to trim anything? I would love to order today . Lift will be installed tomorrow.

blue beauty

I found 235 65 18. So they will fit and I will not have to trim anything? I would love to order today . Lift will be installed tomorrow.

I personally have only tried 17" wheel sizes since I've only encountered 17" wheels. All Bronco Sports come with 17" wheels standard with the exception of Outer Banks, which has an 18" wheel (I'm assuming that's what you have). Although I think the Big Bend can be optioned with 18" wheels, can't remember.

The size that I believe fits best on the Bronco Sport with 17" wheels and a 1.5" lift is 245/65r17. The two tire sizes I provided you are the two closest options to 245/65r17, but on an 18" wheel. Given there is less than 1/2" difference in both dimensions for those sizes, I have a hard time believing that it won't work. BUT If you have a local tire shop want to be 100% sure, it may be a good idea to have them just double-check before you order.

• 245/65r17 = 29.5" diameter, 9.6" width
• 235/65r18 = 30" diameter, 9.3" width
• 245/60r18 = 29.6" diameter, 9.6" width

245/60r18 will be the (slightly) better off-road tire since it has a wider contact patch to the ground, if that is a concern.

Here is a pic I found of a Bronco Sport with 235/65r18 from the user SunZmSpark on Bronco Sport Forums). So it does seem it'll fit just fine.