[SilverDan]

Hummer for the win! Really impressed with the test, the Lightning is nominally the tower and Hummer the offroader but GM still spanked Ford. This shows that the Silverado should be a towing beast, given the aero, tires and lower weight but the same battery

 

[nebula1701]

Going to be interesting to see.

 

[EVTrucking]

Hummer for the win! Really impressed with the test, the Lightning is nominally the tower and Hummer the offroader but GM still spanked Ford. This shows that the Silverado should be a towing beast, given the aero, tires and lower weight but the same battery

I think the Hummer and the Silverado long range EV will have 200+kWh battery packs but I am not sure they will have the same number of electric motors or even the same electric motors.

I read that the Hummer EV has 11,500ftlb of torque and the Silverado EV is supposed to have around 700ftlb. The Lightning is around 750ftlb.

I suppose a Silverado EV can be configured to have more torque but it will be very expensive, $100+K or more.

Pitting a Hummer EV against a standard Lightning is silly and provides no useful information.

 

[EVTrucking]

I think the Hummer and the Silverado long range EV will have 200+kWh battery packs but I am not sure they will have the same electric motors.

I read that the Hummer EV has 11,500ftlb of torque and the Silverado EV is supposed to have around 700ftlb. The Lightning is around 750ftlb.

I suppose a Silverado EV can be configured to have more torque but it will be very expensive, $100+K or more.

Pitting a Hummer EV against a standard Lightning in a tow test is really pretty silly and does not provide any useful information.

 

[HawaiiEV]

It’s towing on the highway that’s gonna be the killer, 55 mph will maximize range. I imagine if you are towing 150 miles a day at 55 mph between stops and can hit up a fast charger in the morning, plus charging off 240 at a camp site it might be possible. I just can’t imagine myself towing a camper and risking being anywhere near the end of range. Too risky.

 

[EVTrucking]

It’s towing on the highway that’s gonna be the killer, 55 mph will maximize range.

I finally watched the video and as you say it is a towing efficiency test and not brute force.

I don’t see the Silverado EV doing much better than any other EV truck in terms of towing efficiency.

 

[SilverDan]

Searching the internet I’ve been hard pressed to find good hard data on towing. It’s all over the map, some posts say weight matters, others say not, this and that. The DOE one of the national labs did work on this and have published research, but of course it all relates to ICE vehicles.

But otherwise EV owners generally seem to agree that it’s not weight but aero that matters. Relating to your earlier post, the Hummer has three motors (I suspect the third is an induction boost motor), the Silverado will have two, otherwise the have the same Ultium battery (approx 212 kWh). Software is different, Hummer is Android Auto OS while Silverado is Ultifi. Anyhow, from the fact that the Silverado is specced at 400+ mile range, and the Hummer at 329 we know already that the Silverado is more efficient, and the chief Engineer has said on numerous interview that as far as they know it has best in class aero, and it was designed with that from the beginning. The Hummer was designed to fit that big, square and boxy look.

So if its true that towing is predominantly aero then yes the Silverado will also be best in class for towing efficiency. Adding in the best in class 400+ mi battery it should be even better. Otherwise I think it was useful showing Hummer versus Lightning, because we have a number of Lightning towing tests, and now we have a Hummer reference, so we start to get a picture of how this looks (but it would be nice if they gave real numbers instead of a gee-whiz seat of the pants test) Transitively, if Hummer spanks the Lightning, then the Silverado, with it’s greater range and efficiency, should destroy it.

 

[EVTrucking]

Searching the internet I’ve been hard pressed to find good hard data on towing. It’s all over the map, some posts say weight matters, others say not, this and that. The DOE one of the national labs did work on this and have published research, but of course it all relates to ICE vehicles.

But otherwise EV owners generally seem to agree that it’s not weight but aero that matters. Relating to your earlier post, the Hummer has three motors (I suspect the third is an induction boost motor), the Silverado will have two, otherwise the have the same Ultium battery (approx 212 kWh). Software is different, Hummer is Android Auto OS while Silverado is Ultifi. Anyhow, from the fact that the Silverado is specced at 400+ mile range, and the Hummer at 329 we know already that the Silverado is more efficient, and the chief Engineer has said on numerous interview that as far as they know it has best in class aero, and it was designed with that from the beginning. The Hummer was designed to fit that big, square and boxy look.

So if its true that towing is predominantly aero then yes the Silverado will also be best in class for towing efficiency. Adding in the best in class 400+ mi battery it should be even better. Otherwise I think it was useful showing Hummer versus Lightning, because we have a number of Lightning towing tests, and now we have a Hummer reference, so we start to get a picture of how this looks (but it would be nice if they gave real numbers instead of a gee-whiz seat of the pants test) Transitively, if Hummer spanks the Lightning, then the Silverado, with it’s greater range and efficiency, should destroy it.

I am having a hard time with ‘spanks’ and ‘destroy’ and ‘beast’. All assumptions and speculation aside I think equivalent trims(configurations) of Lightning and Silverado EV will have similar efficiencies.

On the other hand when comparing a 200+kWh Silverado EV to a Lightning extended range with 131kWh battery then of course the Silverado wins for range. I don’t think a Silverado EV trim with 11,500hp will be available.

I am not a Lightning fan but I do think the Silverado EV will be very competitive and if the 200+ battery pack is available and not astronomical in price then it will be a winner.

Without the 200+kWh battery the Lightning and Silverado EV are pretty much equivalent in all performance metrics.

 

[HawaiiEV]

They just did the Hummer EV vs Ram Cummins towing range at highway speed test on TFL. The hummer looks to be capable of 130 miles range with a 6000 lb trailer at 70 mph, the Cummins is good for 300 miles between fill ups. I imagine it will be much the same for the Silverado EV, drive 2 hours, unhitch trailer, fast charge for an hour and repeat. Doesn’t sound very practical. They got .6 miles per kWh which they claim is more efficient then the ram if you calculate the energy density of diesel. Ram was getting 10 mpg.

 

[SilverDan]

All assumptions and speculation aside I think equivalent trims(configurations) of Lightning and Silverado EV will have similar efficiencies.

Well to be fair thats speculation, whereas the supposition that the Silverado has ‘best in class‘ efficiency is a statement made multiple times by the chief engineer, which has yet to be demonstrate.