In my experience, Load Range F is mandatory for that weight. get Nitto Trail Grappler M/T 37x12.50R18LT tires... they handle the GVWR and torque perfectly. im super satisfied with mine!

Here's what I recommend: Maybe stick with 35s if you're worried about the budget? Honestly, I've been off-roading for years but this truck is a whole different level!! I was sooo stressed about the cost of tires since it's basically a tank. Had a moment to think about this and I ended up going with a 35-inch set I got for a way better price because I didnt wanna deal with rubbing or the crazy cost of larger sizes. My current setup has been AMAZING in the PNW mud and actually handles that instant torque way better than I expected. Ngl, I thought they’d wear out in a month, but they’re holding strong! Do you think 37s are actually worth the extra cash?? Anyway, sticking to 35s saved me a ton.

TL;DR: 35s offer way better value and avoid rubbing issues while still crushing it in the mud! 👍

Quick question - are you mostly worried about *safety* on the highway with all that weight, or just the mud performance? Honestly, i'm kinda cautious because that beast is sooo heavy...

* Try Mickey Thompson Baja Boss A/T LT35X12.50R18 for the crazy sidewall strength.
* Definitely double-check the Load Index is 126+.

Safety first, right? Just wanna make sure you're good. gl!

For your situation, i would suggest focusing heavily on the technical Load Index before falling for the flashy marketing. basically, the load index is a number on the sidewall (like 125 or 126) that tells you exactly how much weight the tire can handle. Since the Hummer is basically a small planet at 9,000 lbs, you need that rating to be high or youll risk a blowout when you air down for the rocks in Moab.

honestly, i’ve been off-roading for years with heavy diesel rigs, but this EV weight is a whole different ball game. i'm still learning the quirks of the Hummer myself, but i’ve noticed that instant torque literally shreds soft rubber compounds. if you want to save some serious money—cuz let’s be real, a set of five tires for this beast is a massive investment—i might want to consider the Milestar Patagonia M/T-02 35x12.50R18LT. they're usually much cheaper, often around $330 each, which is a total steal compared to the $550+ you’ll pay for the big name brands. they have a solid load rating and a design that handles mud surprisingly well.

also, be careful if you jump to 37s. i think they look amazing, but the Toyo Open Country A/T III 35x12.50R18LT is a great budget-friendly middle-ground that balances highway noise with trail grip. you can usually find these on sale for around $380 if you shop around. plus, staying with 35s means less stress on your range and less chance of rubbing when you’re in Extract Mode. anyway, hope that helps! i'm still figuring out the best PSI for my setup, so keep us posted on what you pick. cheers!

Great info, saved!

Ngl, I am struggling with this exact same thing right now. Its wild how heavy these trucks are... honestly reminds me of my cousin back in the day who had one of those old heavy-duty duallys and tried to fit some cheap oversized tires for a trip to the mountains. He thought he was being smart saving a few bucks. Halfway through the trip, we heard this massive pop and the whole sidewall just gave up because of the heat and weight. We were stuck on the side of a narrow trail for like six hours trying to figure out how to jack that monster up without it sinking into the mud. Total disaster. I've been staring at my own Hummer for weeks just terrified of picking the wrong set and ending up in a similar ditch. The anxiety of picking a tire for a 9k pound tank is real. Still havent pulled the trigger on anything myself because I keep thinking about that blowout...

Did this last week, worked perfectly