Complex Tire question

Timmayy! · November 16, 2018

So i recently purchased a 2018 SLT 4x4 crew Z71 with the 275/55/r20 tires. I know i want to upgrade from the SRA's but I'm stuck in the never ending loop of which tire and size to buy. One thing i cant seem to figure out is does a 275/60/20 fit with out a level? I question this because i saw another poster mention that the stamped UCA on the newer sierras wont fit 275/60/20 with a level... So that's got me confused.

Also say that 275/60/20 can fit without a level with no rubbing I'm torn between load ranges. I know i don't want load range E at all, too stiff and don't have anything that would tow near max capacity but i do tow flatboats and center consoles at least once a month. I do a lot of highway driving and MPG and ride quality is important to me. Off-roading is minimal and the main reason for the tire change would be the avoidance of getting stuck in barely muddy grass as well as the upgrade in looks.

To me the Falken wildpeak at3w in either size range would fit the bill perfectly, however... I noticed the 275/60/20 is a standard load (4ply) with a load index of 114 or 115. The 275/55/20 is an XL (6ply) load index of 117. The XL (6 ply) seems like it would be the perfect rated tire for me but I'm not sure i would like the llok of the tire on the truck as i haven't seen any trucks with the stock tire size but upgraded ATs.

So if i chose the 275/60/20 (assuming it would fit with no level) would i be disappointed in the 4 ply and its towing capability. Me leans to know since that is what the SRAs are but what say you.

Sorry for the inevitable thread that has probably been beaten to death.

TRKLGND · November 16, 2018

The Continental Terrain Contact A/T in 275/60-20 would be another good option.

Ozer · November 16, 2018

On my 2014 275/60/20 fit with minimal rubbing of the inner fender liner. Now sure on the 2018 model.

Why not just get a 2" level? Cheap parts and easy to install and you still retain a slight rake.

Timmayy! · November 16, 2018

Somewhat fuel economy, somewhat don't want the extra strain on the front suspension, and somewhat because i thought i saw somewhere that with the new stamped UCA a level didn't stop you from rubbing.

Crstfr · November 16, 2018

i'm picking up new shoes the day after thanksgiving...and i'm kinda in the same boat... almost got 47k on the SRAs.. which surprised me.. but they are worn thin.... i think i'm going to go up one size from the 275/55/20 i have on there now.. i believe they are 31's... i wouldn't mind a 33... . i do have a level.. . hhmm so many decisions.. but sticking with the TKO2's either way/size.. always had bfg's and they have always treated me well.

STRMTRPR · November 16, 2018

.. as far as the 55 vs 60 fitting you are only changing diameter not cross section so all things being equal, if the 55 width fits then the 60 will also. The 60 will get you a 33” tire vs 31.9

Have a look at this link to calculate and compare tire sizes.

http://tiresize.com/calculator/

Sparke · November 16, 2018

Hello

I purchased a GMC Elevation Edition in July. I just upgraded to the Falken Wildpeak at3w. We also just had our 1st real snow yesterday. I went with the stock size 275/55/20.

So far I find them quiet and they handled really great in the snow. Like you I was researching trying to go a size bigger, but couldn't get a definitive answer so I stuck with stock size. To me, they look much better on the truck, they fill out the wheel wells a bit more, but if you are looking for a truly aggressive off road look to your tire they might not fit the bill. To my eye that has a lot to do with the wheel size. I think 17-inch wheels would look better with the tires.

I am going to ride these tires out then when I am due for new ones I am looking to lift the truck and will explore bigger tires.

Timmayy! · November 16, 2018

1 hour ago, STRMTRPR said:

.. as far as the 55 vs 60 fitting you are only changing diameter not cross section so all things being equal, if the 55 width fits then the 60 will also. The 60 will get you a 33” tire vs 31.9

Have a look at this link to calculate and compare tire sizes.

http://tiresize.com/calculator/

Diameter is not the only thing that would cause rubbing. It’s a combination of offset width and total diameter. The extra height of the 275/60/20 might make the tire reach out too far while turning and rub.

But i cannot seem to get a definitive answer on the 275/60/20 with the wildpeaks and a 2018 whether not not they fit.