Re: Options for my 2011 JGC Laredo
It doesn't matter what size the wheels are...it's the tire diameter that matters. If you choose a tire size that's the same relative size as OEM, they will fit just fine and will not alter the accuracy of your speedometer and odometer. The tires that come with 18" wheel setups on JGC are the same diameter as the tires that come on the 20" wheel setups. (~30.4") It's only when you start to up-size your tires (again independent of the wheel size) that you start to have to calculate rub. Many folks "into things" will put 32" tires on for the look and certain off-road characteristics, and generally, they don't have problems in most cases. But that's certainly pushing things depending on the suspension, etc.!
What you can't do is go to a smaller wheel size than what was originally on the vehicle (17" or 18" on the Laredo, depending on the brakes equipped) Base Laredos often come with 17" wheels and "standard" brakes. All the rest come with either 18" or 20", depending on the trim level and packages. HD brakes require 18" wheels minimum.
2012 Grand Cherokee Overland Summit - Winter Chill with New Saddle interior. 5.7L HEMI V8 - Nitto NT421Q "shoes"
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