Larger tires and rims

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Kelsda

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Hi, haven’t posted in a while work is consuming my life, so many out on unemployment, I was looking to swap wheels and tires on my wife’s 2018 Tahoe.
Tires are finished found a set of new Silverado take offs my question is she has 265/65/18 and these new ones are 275/60/20. Does anyone know if any wheel rub will go on. I know 275/55/20 will work. Also speedo issues other than a few miles per hour thanks
 

Joseph Garcia

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Folks will chime with their own personal experiences. But, in the meantime.....

Regarding wheel/tire combinations that will fit your truck without rubbing, no 2 trucks and their suspensions are exactly alike, due to a number of factors including accumulated wear on the suspension components and different wheel widths and offsets, so there is no guarantee that what fits with no rubbing on one truck will automatically fit with no rubbing on your truck. Other folks' experiences can guide you in one direction or another, but the final test will be when you mount the wheel/tire combination on your own truck.

To assist you in getting a good idea on whether or not specific alternate wheel/tire combinations 'may' fit your truck with no rubbing, I recommend that you use the wheel/tire comparison app at the URL listed below. You can use this app starting with your existing wheel/tire combination as a benchmark, assuming that there are currently no rubbing issues with it, and measure the actual critical fender and suspension component clearances as directed by this app. Then, you can enter alternate wheel/tire combinations, and this app will give you the projected changes in these critical fender and suspension component clearances.

https://www.wheel-size.com/calc/

I used this app for determining whether on not I could use my current alternate wheel/tire combination, and it accurately projected the changes in critical clearances. Again, the use of this app in not an absolute guarantee that an alternate wheel/tire combination will fit without rubbing, but it provides a much better assessment, or projection, than simply an educated guess on your part, or a statement from others that it worked on a truck other than yours.
 

Prospect62

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The 275/60/20's are 1.4" taller than your existing 265/65/18's.

275/55/20 (the other factory option for these trucks) is only 0.3" taller.

So you're looking at adding an inch or so, but you still should be OK.

That being said, I went from 275/55/20 on my truck to running a 275/60/20 and I added 1.5" lift in the front (where you'd most likely have issues) to compensate. Did I really need that? Meh...maybe. I can't be sure. At stock height, you may experience some minor rubbing but I'd be willing to bet it would be pretty minimal if at all, especially since you aren't increasing your width much, maybe 0.4" which is more or less nothing.
 
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