R18 wheel size?

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Artem-G

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Hi all,

I am looking to get 18” rims. What do you think would be the best wheel size? My tire dealer recommends 285/65/R18, which is 0.2” smaller than the stock 275/50/R22.

Do you think 275/70R18 would fit without issues? That’s 0.5” larger than stock.

Also, what’s the stock size for 20” tires?
 

Joseph Garcia

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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, 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.
 

Fubar0715

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I had considered adding the OE 18" to my Tahoe SSV when I purchased it-really looked at the options. However, at the end of the day, the cost of the wheels and tires were higher than buying 20s which were FAR more available. Additionally, the tires were more expensive to purchase in the AT variants that I was looking for. I didn't notice any ride quality differences in the 20s from the factory 17s. I have 275/55/20 on it and its pretty smooth!
 

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