General Motors recently released a new teaser video for the GMC Hummer EV, announcing that the debut will take place in the fall, while also showing off the fresh battery-powered utility vehicle with a series of quick shots and hints of future features. Included in the video was a set of shadowy silhouettes for both the upcoming Hummer EV SUT (Sport Utility Truck) and the Hummer EV SUV, both of which included outlines of the wheels and tires. While GM didn’t include any specs, we wanted to do a brief thought experiment using the teaser to investigate the new vehicles’ exterior dimensions.
Here’s the experiment – by taking images from the teaser and importing them into a CAD program, we can accurately scale certain aspects of the image. So, if we assume something like the tire diameter, we can then derive other measurements, such as the overall length and the wheelbase.
Naturally, we should preface this by saying that our assumptions could be off-base here, and that this thought experiment is just really just for fun.
That said, we’re assuming that the tires pictured in the teaser images are 35 inches in diameter. From there, we can calculate a 137.4-inch wheelbase and 217.6-inch overall length for the GMC Hummer EV SUT, as well as a 130.3-inch wheelbase and 194.1-inch overall length for the GMC Hummer EV SUV.
Assuming these dimensions are at least in the right ballpark, there are a few conclusions we can draw. First, the new GMC Hummer EV is big, but overall length is still much smaller than the the full-size GMC Yukon, backing our previous speculation that the SUV model is more of a midsize entry.
For reference, the all-new 2021 GMC Yukon measures in with a 120.9-inch wheelbase and 210-inch overall length, while the extended-length 2021 GMC Yukon XL gets a 134.1-inch wheelbase and 225.2-inch overall length.
We can also compare the numbers to other relevant entries outside the GM portfolio, such as the 2020 Land Rover Defender, which gets an overall length of 180.4 to 197.6 inches, while the wheelbase is 101.9 inches to 119 inches. The 2021 Ford Bronco four-door gets an overall length measuring between 189.4 inches and 190.5 inches, and a wheelbase of 116.1 inches. Finally, the Jeep Wrangler Unlimited has 188.4 inches for overall length, and 118.4 inches for the wheelbase, while the Jeep Gladiator gets a 218-inch overall length and 137.3 inches for the wheelbase.
| Vehicle | Overall Length (in.) | Wheelbase (in.) |
|---|---|---|
| GMC Hummer EV SUT (estimate) | 217.6 | 137.4 |
| GMC Hummer EV SUV (estimate) | 194.1 | 130.3 |
| 2021 GMC Yukon | 210 | 120.9 |
| 2021 GMC Yukon XL | 225.2 | 134.1 |
| 2020 Land Rover Defender | 180.4 to 197.6 | 101.9 to 119 |
| 2021 Ford Bronco four-door | 189.4 to 190.5 | 116.1 |
| Jeep Wrangler Unlimited | 188.4 | 118.4 |
| Jeep Gladiator | 218 | 137.3 |
Again, our numbers for the new GMC Hummer EV are based on a few as-of-yet unconfirmed assumptions, so take them with an appropriately sized grain of salt. That said, if the numbers do turn out to be accurate, how would they shape your opinion of the new Hummer EV? Let us know in the comments, and make sure to subscribe to GM Authority for more GMC Hummer news, GMC news, and around-the-clock GM news coverage.
Hat tip to Matt!
Comments
Those are not 35s. At best, a 33 which will normally measure close to 32.5 or so.
They look like 275/55r20s which will measure closer to 31.5
Scale it from the bolt pattern
@ gs_M6
Brilliant.
Even if the size isn’t exactly accurate based on the tire size assumption, the scale is still the same. In this case, the Hummer is shaping up to have a longer wheelbase to overall length compared to these competitors. Which translates to the shorter overhangs front and rear. This should make for a highly capable vehicle.
Makes sense given EVs allow you to have longer wheelbases because of how compact the motor and drivetrain are. That in turn translates into more cabin room with no engine bits protruding into the cabin space.
Say nothing of ground clearance, especially with fully independent suspension all around. Everything is flat underneath, and packed up into the frame. The ground clearance on these things is going to be ridiculous.
GM would not offer less than a 35 sized tire on the Hummer. They wanted to add it to the present ZR2 but it would have required fender changes and new CAFE testing.
So I would say these are at least a 35. Note too these are not 17” wheels either. They are 20-22 at min.
This Hummer is not going to be as bulky or boxy as the H2. It will split the size between the H2 and H3 but still be very much a full size vehicle not a mid size.
I read something from a month or two back which wrote that a GMC engineer working on the project said that the base tire size will be 35’s, with an option for 37’s up higher in the trim hierarchy.
If the Hummer has 22s with 35″ mud tires it’s doa.
I’m hoping they learned a few things since the last Hummer.
Really? What would you prefer, the street tires from the old Silverado SS?
I have no idea it the wheels will be 20-22 inchers, actually I hope not, if that’s what your point is (18’s would be perfect for me), but 35 inch tires is a must. You can’t be putting tires with thin sidewalls on this thing…that’s not the purpose. The purpose is offroad. 17’s or 18’s with 33-37 inch tire options would be perfect imo.
I’m not sure if you understood what I was saying. I don’t want to profile tires, which is why I hope they don’t offer this with 22s. Should be 17-20.
That’s what I thought you said. I’m with you all the way there.
GM puts 32s on their most capable off-road Silverado. I believe the Zr2 also uses a 31 or 32″ tire. They wouldn’t spend the $5 it took to use a more aggressive gear ratio either.
Those just look too small to be 35. The Raptor has a 34.5 and they look bigger
Based on the customer base I expect there will be street and off road wheel options. Most Hummers were generally used for city driving and most were customized. JUST as the one their spokesman had done up by West Coast Customs.
There will be something for everyone.
Mike most Hummers never went off road. I expect their will be something for off road and Urban driving.
Ratio matters little here in the electric. The Colorado lacks a 32 For two reasons one the fenders and fender wells would need redone. The other is the cost to re do the CAFE test for a fraction of an inch. Most guys who want bigger were doing lifts anyways,. I expect the next gen will have a 35 option.
C8.R…
“This Hummer is not going to be as bulky or boxy as the H2. It will split the size between the H2 and H3 but still be very much a full size vehicle not a mid size.”
Well, 196 inches in length is not full size by any stretch of the imagination. It’s actually much closer to the 190 inches length of the new Bronco.
I wish they would stop the Infiniti type adds of trying to tease the consumer and by the time the vehicle finally arrives people are so sick of the adds they could care less about the vehicle. Same goes for the Cadillac. Obviously they have nothing to show the consumers so just move on and forget the insanity. I personally have already forgotten about GM ever entering the electric vehicle market just based on their stupid showings.
I thought we already had a pretty good idea of the size of the Hummer EV from the video with the guys standing right next to it. True it was missing a lot of body panels and clearly wasn’t completed, but you certainly got an idea.
My impression was that it wasn’t really that large of a vehicle, or at least not as large as I expected.
As for the size of the wheels and tires in that rendering… I’m not sure that matters.
I had a feeling this would be more Rivian sized than Cybertruck sized.
Cannot wait to see this new EV Hummer. I am very excited. And I pray that the Third model will be a Bronco type vehicle that you can remove all the doors and top. Would be so sick.
I’m thinking 20″ rims and 33-33.5″ Goodyear Duratracs… 275/60R20 or 285/60R20, so not quite as big as GMA makes it out. That would put the SUT right around 200″, maybe a few inches more. Now if those are 22″ rims, that is a new size Duratrac made specifically for the Hummer.
That’s what I’m thinking they are too. I think they may do a base around 33 with an optional 35.
As a owner of the H2 and H3 I would say the EV truck is about:
225” long
79” to 81” wide
73” tall
But that’s based on if the silhouette outline fits exactly up to those tires/wheels in the photos. I also believe those tires are 35”. If the tires are smaller than 35” then my dimensions would be more in line with GM Authority’s. I actually hope GM Authority’s dimensions are right with 35” tires because then the approach, break over, and departure angles are going to be Classic Hummer level and I will reserve the SUV the night it’s revealed.
It needs to be short enough to fit in garages where the electric charger is located.
Well, let’s see how close the estimates were to the actual measurements for the truck:
GMA: Wheelbase (in.) 137.4 Length (in.) 217.6
Actual: Wheelbase (in.) 135.6 Length (in.) 216.8
I would say that was pretty darn close given the fuzzy “photos” as the source. By the one photo/video we have from the Barclay’s conference of the SUV version, it does look about the same as the earlier rendering so maybe the SUV estimated dimensions will be close as well. Given that, the angle from the video was probably misleading on purpose so we will see!
Glad to see that the SUV estimated dimensional numbers were pretty darn close (as well as the original truck estimates)! The original GMC “drawings” were pretty accurate and did not stray far,