GMC All terrain- bigger tires

[Jordan Banks]

Question:

I have a 2018 GMC Sierra All Terrain 1500 and i want to put larger tires on it than what came with it.

Currently have 275/50/20 but would like to go with something bigger keeping the stock rims...

anyone know what i can run for tires with out rubbing. i do have a leveling kit as well.

[L86 All Terrain]

You should be able to go all the way to a 305/55R20 if you have a 2.5" level and factory rims. I suggest a 295 section width if you plan on still having traction in wet and winter conditions though. My truck is on 33"x12.5"xR20 and they rub a bit, but they are very wide. Terrible fuel economy, horrible traction in wet conditions, but corners like a Camaro on dry pavement. 

 

295/60's or 285/60's would be a nice fit and still give you good traction. That will net you around a 33.5 - 34" tires and you should be well safe of rubbing. Here's mine on 12.5's 

[Jordan Banks]

sharp looking truck! thanks for the info!!!

[Jordan Banks]

so i went with the stock 275/55/20 pirelli scorpion all terrain tires and now they rub on the upper control arms when turning tight (all the way cranked)

has anyone had any issues going with a 1" wheel spacer?