Air Suspension / 37" Tires

Gtrekker said:

I am planning on replacing the 35" tires with 37" AT tires and some aftermarket goodies only. Since performance parts for EVs are nonexistent. I'm thinking....

My question... with the air (bags) suspension, can we lower the Hummer to get into parking garages?
I haven't seen hard dimensions (H,W,L) of the Hummer yet.

FYI, from past experience... Vehicles with 34"-35" tires would just clear the clearance approach bar at the airport parking garages. Disclaimer. Depending on the vehicle...

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Hummer EV was designed for 37" tires so clearance should not be an issue in any air suspension height setting. I think GM would put the 37's on there, but that would really hurt the EV range. I am certain you will be able to lower the suspension, but exact height not announced yet.

It's going to be tough to get a read on, @Gtrekker. GMC hasn't yet "officially" revealed the Hummer EV height in the standard drive setting from what we can tell, but a few publications have said it's 81.1 inches in the standard 10.1 inch ride height setting. Add the 37 inch tires on, and you can add another inch to overall ride height for 82.1 inches, or a shade over 6 3/4 feet. There is an entry/exit mode that drops the truck from the standard 10.1 inch ground clearance to 8.1 inches, but I'm pretty sure that's only available while the truck is parked.

Just to let you know as a frame of reference: most state requirements require parking facilities to be at least 7'-0" (84") clear and where ADA van spaces are located they need to be 8'-2" clear. As someone who designs parking facilities for a living, this is something I get to deal with everyday! But, older facilities often do not meet code so there are certainly exceptions.

MattF said:

Just to let you know as a frame of reference: most state requirements require parking facilities to be at least 7'-0" (84") clear and where ADA van spaces are located they need to be 8'-2" clear. As someone who designs parking facilities for a living, this is something I get to deal with everyday! But, older facilities often do not meet code so there are certainly exceptions.

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Great perspective, thanks, @MattF!

StillHummer said:

It's going to be tough to get a read on, @Gtrekker. GMC hasn't yet "officially" revealed the Hummer EV height in the standard drive setting from what we can tell, but a few publications have said it's 81.1 inches in the standard 10.1 inch ride height setting. Add the 37 inch tires on, and you can add another inch to overall ride height for 82.1 inches, or a shade over 6 3/4 feet. There is an entry/exit mode that drops the truck from the standard 10.1 inch ground clearance to 8.1 inches, but I'm pretty sure that's only available while the truck is parked.

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For reference a standard garage door height is 7'-0" (84"), but this can vary somewhat with the how the opening is trimmed out and the weatherstripping to seal the garage door. I currently drive a 2005 Silverado with 305/70 R 18.... They are slightly smaller than a 35" tire and there are many structures that I can't get into (or don't want to try especially since it has a turning radius or about 100 yards)... But I would think that you could probably lower the ride height at lower speeds... I know that my wife's Mercedes GLS450 has air suspension and you can lower it or raise it, but at a certain speed, it defaults back to standard ride height.