275 70 18 winter tires on 21 Tahoe

[Nima]

Hello
Anyone knows if I can clear 275 70 18 on the regular high country Tahoe suspention?
It seems like a nicer looking than recommended 265 65 18
Please let me know if you have a better size recommendation for winter tires

 

[Joseph Garcia]

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.

 

[WalleyeMikeIII]

I’d stick to the stock 275/60R20, there are a plethora of 20” Silverado and Sierra takeoff options, and it’s a supported Stock Size.

I’m running the Sierra SLT 20” takeoffs for winter on my Denali that came stock wearing 275/50R22 and it’s been great

I scored these wheels on FB Marketplace for $900. Bought 4 TPMS using GM Rewards Points, and the tires were $910 at Discount Tire w/ an Instant Rebate.

 

[Jettix2]

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.

I’m running a set of 18” Silverado takeoffs with 275/65/18 Blizzak DMV2s (I had them off a previous car and they only had 500 miles on them) on our ‘22 Burb and it’s EXCELLENT in the snow.

 

[jgraves]

I don't know for certain but I would expect them to fit, provided they were mounted on a wheel with similar offset to stock (-26 to -28mm).

A 275/70R18 Blizzak measures 33.2 x 11 based on TireRack's website. Stock tire size on a Z71/AT4 is 275/60R20 and every Goodyear listed on TireRack measures 33.0 x 11 and stock tire size on your High Country is 275/55R20 (31.9 or 32.0 x 11.2) or 275/50R22 (32.9 x 11.2), assuming Bridgestones.

I will usually drive one tire up a ramp or small incline and check for clearance as the wheel is turned in both directions. Your looking for 1/8" plus margin if you currently have 22's and 5/8" if you currently have 20's.