20" Inch New Tire: GoodYear ElectricDrive AT

[petemill]

I'm getting a set of these installed next Monday 9/29. I'll report back with initial impressions next week.

GREAT! Looking forward to seeing photos and efficiency. What will you be replacing?

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[AuburnRivian]

GREAT! Looking forward to seeing photos and efficiency. What will you be replacing?

These will be replacing the factory Pirelli Scorpions. Most of my driving is stoplight traffic, but I’ll try to get a good efficiency baseline on the Scorpions to compare the new tires to.

 

[UnsungZero_OldTimeAdMan]

These will be replacing the factory Pirelli Scorpions. Most of my driving is stoplight traffic, but I’ll try to get a good efficiency baseline on the Scorpions to compare the new tires to.

Rivian offered two Scorpions. The 275/65R20 Scorpion AT and the 275/50R22 Scorpion Zero. With gen2 there is now a third, Scorpion MS.

 

[BrianB]

Hi all,

For those that aren’t aware, I’m an engineer at Goodyear that worked on the Wrangler Territory AT designed for Rivian. I’m not as familiar with the ElectricDrive AT. I’m sure the ElectricDrive replacement tire would be a good match for the R1, but I would still lean towards the Original Equipment Territory tire designed specifically for Rivian.

Friendly advice for your Marketing buddies at GY…when they launch a new tire that’s 50% more expensive than a similar electric vehicle tire, they may get more of us to pay for the more expensive tire if they would tell us how it’s better.

 

[AuburnRivian]

Rivian offered two Scorpions. The 275/65R20 Scorpion AT and the 275/50R22 Scorpion Zero. With gen2 there is now a third, Scorpion MS.

Mine are the 275/65R20. The Goodyear Electrodrive ATs only come in 20in.

 

[AuburnRivian]

Tires were installed this afternoon! I'll post some photos later today, but wanted to share some initial thoughts and impressions:

• Noise reduction compared to the Pirellis is like night and day. Obviously everyone knows or has experienced the loudness and drone of the Pirelli's, so no surprise there. These are AT tires, so they are not completely silent, but you have to really listen to notice. I took some quick before and after measurements with a sound meter app on my phone. Not scientific, but gives a decent idea:
  • At 45mph constant speed, the Pirelli's were measuring around 65dB, with a noticeable spike on the graph around the 200-300kHz range. That's the dreaded Pirelli tire noise.
  • At 65mph constant speed, the Pirelli's were measuring around 70dB, with a spike in the 300-400kHz range.
  • At 45mph constant speed, the Goodyear's were measuring around 59dB, fairly linear with no noticeable spike in any frequency range.
  • At 65 mph constant speed, the Goodyear's were measuring around 63dB, with no noticeable spike.
  • One other note on noise, these tires are noticeably quieter over bumps in the road. The Pirelli's seemed to amplify small bumps, almost like hitting a drum when you hit a bump at speed. The Goodyear's definitely muffle the sound of those small bumps and don't translate that noise to the cabin as much as the Pirelli's did. Early on, it's apparent the "Soundcomfort" foam insert is doing what's intended.
• Efficiency-wise, I didn't really have a chance to get a great like-for-like baseline with either tire for comparison, but here is some limited data for comparison:
  • My lifetime average on the Pirelli's with 20K miles was 2.18m/kWh. This is on a Gen 1 Quad motor with the 20in standard AT wheel and the factory Pirelli's. I reset my Trip B yesterday and drove around for ~25 miles in mostly 45mph stoplight traffic, and got around the same 2.2 m/kWh with the Pirelli's in 80-85 degree weather and AC on.
  • After installing the new Goodyear's today, I've only driven ~15 miles in mixed highway and 45 mph stoplight traffic, and I'm at 2.58m/kWh. Too early to say there is really that big of an improvement, but it looks promising and there is definitely a measurable improvement in efficiency just watching the efficiency graph and knowing what it normally looks like. We will see how that holds up as the tires break in and I give it some more time and miles. I'll keep reporting back over the next few days and weeks.
• So how do they feel? In a word, fantastic. However, new tires always feel fantastic at first after driving around on worn out tires. There are a few things I've already noticed in the brief amount of driving I've done so far:
  • Steering definitely feels lighter and more responsive. Again, keep in mind this is compared to worn out Pirelli's. However, I am really pleased with the road handling of these tires so far.
  • The tires feel a little more compliant than the Pirelli's, absorbing bumps better but perhaps at the expense of handling, but maybe not. I took a short twisty road and didn't get too adventurous, but grip felt really really good. Better than the worn out Pirelli's, that's for sure.
  • I haven't got the chance to "goose" it yet to test traction. Once I rubber these in a little more I'll give it a go and see how well they perform at full throttle launch.

That's all for now, but I'll be sure to update more as I have a chance to really test these out.

 

[UnsungZero_OldTimeAdMan]

Tires were installed this afternoon! I'll post some photos later today, but wanted to share some initial thoughts and impressions:

• Noise reduction compared to the Pirellis is like night and day. Obviously everyone knows or has experienced the loudness and drone of the Pirelli's, so no surprise there. These are AT tires, so they are not completely silent, but you have to really listen to notice. I took some quick before and after measurements with a sound meter app on my phone. Not scientific, but gives a decent idea:
  • At 45mph constant speed, the Pirelli's were measuring around 65dB, with a noticeable spike on the graph around the 200-300kHz range. That's the dreaded Pirelli tire noise.
  • At 65mph constant speed, the Pirelli's were measuring around 70dB, with a spike in the 300-400kHz range.
  • At 45mph constant speed, the Goodyear's were measuring around 59dB, fairly linear with no noticeable spike in any frequency range.
  • At 65 mph constant speed, the Goodyear's were measuring around 63dB, with no noticeable spike.
  • One other note on noise, these tires are noticeably quieter over bumps in the road. The Pirelli's seemed to amplify small bumps, almost like hitting a drum when you hit a bump at speed. The Goodyear's definitely muffle the sound of those small bumps and don't translate that noise to the cabin as much as the Pirelli's did. Early on, it's apparent the "Soundcomfort" foam insert is doing what's intended.
• Efficiency-wise, I didn't really have a chance to get a great like-for-like baseline with either tire for comparison, but here is some limited data for comparison:
  • My lifetime average on the Pirelli's with 20K miles was 2.18m/kWh. This is on a Gen 1 Quad motor with the 20in standard AT wheel and the factory Pirelli's. I reset my Trip B yesterday and drove around for ~25 miles in mostly 45mph stoplight traffic, and got around the same 2.2 m/kWh with the Pirelli's in 80-85 degree weather and AC on.
  • After installing the new Goodyear's today, I've only driven ~15 miles in mixed highway and 45 mph stoplight traffic, and I'm at 2.58m/kWh. Too early to say there is really that big of an improvement, but it looks promising and there is definitely a measurable improvement in efficiency just watching the efficiency graph and knowing what it normally looks like. We will see how that holds up as the tires break in and I give it some more time and miles. I'll keep reporting back over the next few days and weeks.
• So how do they feel? In a word, fantastic. However, new tires always feel fantastic at first after driving around on worn out tires. There are a few things I've already noticed in the brief amount of driving I've done so far:
  • Steering definitely feels lighter and more responsive. Again, keep in mind this is compared to worn out Pirelli's. However, I am really pleased with the road handling of these tires so far.
  • The tires feel a little more compliant than the Pirelli's, absorbing bumps better but perhaps at the expense of handling, but maybe not. I took a short twisty road and didn't get too adventurous, but grip felt really really good. Better than the worn out Pirelli's, that's for sure.
  • I haven't got the chance to "goose" it yet to test traction. Once I rubber these in a little more I'll give it a go and see how well they perform at full throttle launch.

That's all for now, but I'll be sure to update more as I have a chance to really test these out.

Good to have another go-to option besides the Toyo OC ATIII EV. Tread pattern isn't as aggressive. Looks more like a rugged-ized AS pattern. Wouldn't surprise me if they are more efficient than the Toyos (and less effective off-road). Good option for those who don't wheel often, but also don't want to go full AS.

 

[foxerson]

Tires were installed this afternoon! I'll post some photos later today, but wanted to share some initial thoughts and impressions:

• Noise reduction compared to the Pirellis is like night and day. Obviously everyone knows or has experienced the loudness and drone of the Pirelli's, so no surprise there. These are AT tires, so they are not completely silent, but you have to really listen to notice. I took some quick before and after measurements with a sound meter app on my phone. Not scientific, but gives a decent idea:
  • At 45mph constant speed, the Pirelli's were measuring around 65dB, with a noticeable spike on the graph around the 200-300kHz range. That's the dreaded Pirelli tire noise.
  • At 65mph constant speed, the Pirelli's were measuring around 70dB, with a spike in the 300-400kHz range.
  • At 45mph constant speed, the Goodyear's were measuring around 59dB, fairly linear with no noticeable spike in any frequency range.
  • At 65 mph constant speed, the Goodyear's were measuring around 63dB, with no noticeable spike.
  • One other note on noise, these tires are noticeably quieter over bumps in the road. The Pirelli's seemed to amplify small bumps, almost like hitting a drum when you hit a bump at speed. The Goodyear's definitely muffle the sound of those small bumps and don't translate that noise to the cabin as much as the Pirelli's did. Early on, it's apparent the "Soundcomfort" foam insert is doing what's intended.
• Efficiency-wise, I didn't really have a chance to get a great like-for-like baseline with either tire for comparison, but here is some limited data for comparison:
  • My lifetime average on the Pirelli's with 20K miles was 2.18m/kWh. This is on a Gen 1 Quad motor with the 20in standard AT wheel and the factory Pirelli's. I reset my Trip B yesterday and drove around for ~25 miles in mostly 45mph stoplight traffic, and got around the same 2.2 m/kWh with the Pirelli's in 80-85 degree weather and AC on.
  • After installing the new Goodyear's today, I've only driven ~15 miles in mixed highway and 45 mph stoplight traffic, and I'm at 2.58m/kWh. Too early to say there is really that big of an improvement, but it looks promising and there is definitely a measurable improvement in efficiency just watching the efficiency graph and knowing what it normally looks like. We will see how that holds up as the tires break in and I give it some more time and miles. I'll keep reporting back over the next few days and weeks.
• So how do they feel? In a word, fantastic. However, new tires always feel fantastic at first after driving around on worn out tires. There are a few things I've already noticed in the brief amount of driving I've done so far:
  • Steering definitely feels lighter and more responsive. Again, keep in mind this is compared to worn out Pirelli's. However, I am really pleased with the road handling of these tires so far.
  • The tires feel a little more compliant than the Pirelli's, absorbing bumps better but perhaps at the expense of handling, but maybe not. I took a short twisty road and didn't get too adventurous, but grip felt really really good. Better than the worn out Pirelli's, that's for sure.
  • I haven't got the chance to "goose" it yet to test traction. Once I rubber these in a little more I'll give it a go and see how well they perform at full throttle launch.

That's all for now, but I'll be sure to update more as I have a chance to really test these out.

Thanks for sharing your first-impressions and for the noise measurements. I noticed that TireRack classified this as an "on-road all-terrain" tire, comparable to the Territory AT. Interestingly, they classify the OEM Pirelli Scorpion AT Plus as "off-road all-terrain". Not sure I agree with that. What is visual your take on how aggressive the tread looks compared to the Pirelli?

 

[AuburnRivian]

Good to have another go-to option besides the Toyo OC ATIII EV. Tread pattern isn't as aggressive. Looks more like a rugged-ized AS pattern. Wouldn't surprise me if they are more efficient than the Toyos (and less effective off-road). Good option for those who don't wheel often, but also don't want to go full AS.

I was dead set on getting the Toyo's until these popped up. I do some light off-roading in the mountains, so I definitely needed something more aggressive than a AS, but to this point there haven't been any good road-biased AT tires available to replace the more off-road focused AT Pirelli's. I considered the Territory AT's, but didn't like that they didn't come in a 275/65r20 size. These Goodyear Electricdrive AT's looked like the perfect compromise I was looking for in the right size. The Toyo's are definitely a more off-road AT tire like the Pirelli's and a good replacement, but for someone like me I'd prefer to give up a tiny bit of off-road capability to get a measurable increase in efficiency. The Goodyear Electricdrive AT's have a little more aggressive tread than the Territory AT's which I like. Less aggressive definitely than the Toyo's and Pirelli's. From what I can tell the sidewall tread looks more low profile than other AT options, including the Territory At's. I'm sure by design to help efficiency at the expense of mud performance and perhaps (subjectively) looks. Still a great looking tire that looks like an AT tire even without the knobby sidewalls of the Toyo's and Pirelli's.

 

[DuncIT]

I like the 3 peak snow rating!

 

[UnsungZero_OldTimeAdMan]

Thanks for sharing your first-impressions and for the noise measurements. I noticed that TireRack classified this as an "on-road all-terrain" tire, comparable to the Territory AT. Interestingly, they classify the OEM Pirelli Scorpion AT Plus as "off-road all-terrain". Not sure I agree with that. What is visual your take on how aggressive the tread looks compared to the Pirelli?

I agree with it 100%. Look at the Scorpion AT's tread design. Compare to other true AT tires. Then look at tread design of Electric Drive AT—it has more in common with AS tread than AT. It's another AS/AT hybrid.

 

[UnsungZero_OldTimeAdMan]

I was dead set on getting the Toyo's until these popped up. I do some light off-roading in the mountains, so I definitely needed something more aggressive than a AS, but to this point there haven't been any good road-biased AT tires available to replace the more off-road focused AT Pirelli's. I considered the Territory AT's, but didn't like that they didn't come in a 275/65r20 size. These Goodyear Electricdrive AT's looked like the perfect compromise I was looking for in the right size. The Toyo's are definitely a more off-road AT tire like the Pirelli's and a good replacement, but for someone like me I'd prefer to give up a tiny bit of off-road capability to get a measurable increase in efficiency. The Goodyear Electricdrive AT's have a little more aggressive tread than the Territory AT's which I like. Less aggressive definitely than the Toyo's and Pirelli's. From what I can tell the sidewall tread looks more low profile than other AT options, including the Territory At's. I'm sure by design to help efficiency at the expense of mud performance and perhaps (subjectively) looks. Still a great looking tire that looks like an AT tire even without the knobby sidewalls of the Toyo's and Pirelli's.

It would be interesting to test the Electric Drive AT against Territory AT in 275/60R20 XL and find out what the $150 difference is.

 

[foxerson]

I agree with it 100%. Look at the Scorpion AT's tread design. Compare to other true AT tires. Then look at tread design of Electric Drive AT—it has more in common with AS tread than AT. It's another AS/AT hybrid.

To clarify, I'm not sure I agree with Tire Rack classifying the Pirelli Scorpion AT as an "off-road all-terrain". It always seemed a bit more highway-biased in comparison to a true AT like the Toyo OC AT and is nowhere close to a BFG AT KO3.

 

[foxerson]

I was dead set on getting the Toyo's until these popped up. I do some light off-roading in the mountains, so I definitely needed something more aggressive than a AS, but to this point there haven't been any good road-biased AT tires available to replace the more off-road focused AT Pirelli's. I considered the Territory AT's, but didn't like that they didn't come in a 275/65r20 size. These Goodyear Electricdrive AT's looked like the perfect compromise I was looking for in the right size. The Toyo's are definitely a more off-road AT tire like the Pirelli's and a good replacement, but for someone like me I'd prefer to give up a tiny bit of off-road capability to get a measurable increase in efficiency. The Goodyear Electricdrive AT's have a little more aggressive tread than the Territory AT's which I like. Less aggressive definitely than the Toyo's and Pirelli's. From what I can tell the sidewall tread looks more low profile than other AT options, including the Territory At's. I'm sure by design to help efficiency at the expense of mud performance and perhaps (subjectively) looks. Still a great looking tire that looks like an AT tire even without the knobby sidewalls of the Toyo's and Pirelli's.

Good point about the 275/65R20 sizing. I've done a bit of off-road driving on the Pirelli's. Nothing serious enough that I need the extra height. But there is a certain appeal to having it available. After all, I don't really need the extra clearance - until I actually do and it's too late.

 

[AuburnRivian]

To clarify, I'm not sure I agree with Tire Rack classifying the Pirelli Scorpion AT as an "off-road all-terrain". It always seemed a bit more highway-biased in comparison to a true AT like the Toyo OC AT and is nowhere close to a BFG AT KO3.

Very true. The Pirelli Scorpion AT was always a compromised AT tire when compared to KO2/3's, Toyo AT3, and tires like the Falken Wildpeaks. My previous truck was a Ranger and I ran Wildpeaks on it. Great Off-road tire but more than I needed. The Territory AT is about as close to a AS tire as you can get as an "AT" tire. I'd say the Electricdrive is somewhere between the Territory AT and Pirelli's as far as off-road focus go.

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