Largest Tires with Lift/Level on Stock 20" Wheels

[DENALIHD66]

I have the stock 20" Polished Aluminum wheels that I want to use to put larger tires on. With a 2-2.25" front level, and possibly a 2.25" tall rear block, what is the largest tire size I can do without ANY rubbing or other modifications?

 

I would like to do 305/55/20, but there is sway bar rubbing with this setup.

I am wondering about 295/60/20? (Toyo Open Country AT2).

 

If the latter would fit, could they work with the Bilstein 5100 leveling shocks on the highest (1.8") setting?

 

2015 GMC Sierra 1500 CC 6.2/8Speed Short bed Max Trailering package.

[Lgetz]

I have the stock 20" Polished Aluminum wheels that I want to use to put larger tires on. With a 2-2.25" front level, and possibly a 2.25" tall rear block, what is the largest tire size I can do without ANY rubbing or other modifications?

 

I would like to do 305/55/20, but there is sway bar rubbing with this setup.

I am wondering about 295/60/20? (Toyo Open Country AT2).

 

If the latter would fit, could they work with the Bilstein 5100 leveling shocks on the highest (1.8") setting?

 

2015 GMC Sierra 1500 CC 6.2/8Speed Short bed Max Trailering package.

With a 2.25 to 2.5 inch leveling kit either of the two sizes you listed should fit but may rub slightly at full lock or in a bumpy off road excursion. The Biletein 5100's are a good choice but they probably don't have as much lift as you require. Furthermore they aren't listed for a Max Tow equipped truck.

[DENALIHD66]

See I was under the impression they would work, because the max tow front springs are the same as the non-z71 springs I thought. Maybe the shocks themselves would work but the leveling system of them wouldn't? Guess I'll have to give them a call to find out. If the Bilstein 5100s don't work, what's a better shock than my oem ones? I had Bilstein HD's on my previous truck and they were excellent. Firm, but extremely controlled.

[amxguy1970]

Wow, such an original question that in no way could have been answered by searching or any of the other thousand threads asking the same question.

 

Each truck varies, what works for some might not work for others. Some trucks sit different, different alignments, tires run different sizes and levels/lifts for different manufacturers vary. Do some homework and some looking around and see what others say. Starting a thread will get you less results, those that have done it probably already asked the question and responded or may have stopped posting so you won't get a proper answer, that is why searching and collecting info is much more useful.

 

Tyler