Top Speed of Gen 2 R1 Ascend Models = 130mph in Launch Mode / 110mph all other modes

[Dark-Fx]

NO ONE should be driving over 100 mph on PUBLIC roads. Period. This is just stupid and how innocent people die. Go to a private track.

Time still passes at private tracks.

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[White Shadow]

What's the use of a high performance vehicle if you cannot go over 110 mph at times? Most vehicles on the road are not limited at 110 mph. The Honda Civic can reach a top speed of 139 mph.

To be honest, those kind of speeds on public roads are stupid. I've done it myself, but again, pure stupidity. But even so, I'd rather do 139 mph in a Civic than 110 mph in a Rivian. I got my Jeep up to 113 mph on a highway one time and it wasn't a great feeling. I hit 168 mph in my Audi (and still had more) and it felt far better/safer than 113 mph in my Jeep. And yes, I was being an idiot running those kind of speeds, but I did it anyway on an otherwise empty highway.

I've also drive in Germany once a year (business trips) and have done 210 km/h, which is about 130 mph in rental cars all the time. Most rental cars are limited to 210 km/h due to the tire speed ratings, so faster than that really isn't an option.

 

[momo3605]

There is no time ever where you would need to go 110 to pass someone who is going 70. You’re just a bad driver and not in control of your vehicle if your accelerating out of your own control.

you must be a bad driver if you don't have control of a car above 110?

 

[White Shadow]

Having a slightly higher top speed can be useful at times. Say you're on the freeway driving along and the guy in front of you won't go above 70, you want to pass, you put your foot down, 1000hp spring to life, you very quickly ram into that 110 limiter. 130 is still a responsible limit while leaving some room for passing maneuvers

That's kind of a silly example, to be honest. If you need to exceed 110 mph to pass someone going 70 mph, then something's very wrong. You can pass someone fairly quickly with no more than a 20 mph speed differential. And that's being generous.

 

[White Shadow]

It’s hard to believe that all of you make enough money to afford such an expensive vehicle by all the stupid things that I read. It makes me wanna leave the Rivian forum because of the lack of intelligence. I actually wish some of you had the ability to remove the top speed limiter just so you could crash your truck because y’all drive like morons.

I'd make the argument that the road is often full of true morons who are far more unsafe because of poor driving than someone who habitually speeds. If anything, enthusiasts who speed tend to be more highly skilled drivers than most of the brain-dead morons who roam our highways.

No matter how you slice it, being a defensive driver is the best way to survive in a vehicle on public roads. Awareness is always the key.

 

[savethemanual]

Time still passes at private tracks.

Of course people die at private tracks, you are completely missing the point.

At a private track, one expects to drive at extremes or engage with others at high speeds on roads made for this purpose and with extra safety requirements (helmets are a good example).

Public roads have speed limits for a reason, the data does not lie....speed kills.

 

[windblowlc]

To be honest, those kind of speeds on public roads are stupid. I've done it myself, but again, pure stupidity. But even so, I'd rather do 139 mph in a Civic than 110 mph in a Rivian. I got my Jeep up to 113 mph on a highway one time and it wasn't a great feeling. I hit 168 mph in my Audi (and still had more) and it felt far better/safer than 113 mph in my Jeep. And yes, I was being an idiot running those kind of speeds, but I did it anyway on an otherwise empty highway.

I've also drive in Germany once a year (business trips) and have done 210 km/h, which is about 130 mph in rental cars all the time. Most rental cars are limited to 210 km/h due to the tire speed ratings, so faster than that really isn't an option.

It is stupid at those speed on crowded public roads but on a clear highway I'd bet doing 110+ mph in a Gen 2 Quad with updated suspension/tires and a near 400 lbs of weight trim is not the same as doing 110 mph in a Gen 1 Quad. 110+ in the Rivian is much safer than attempting 139 in a Civic. That's lift-off speed without down force modifications.

 

[mkg3]

The links I provided are just one of many. All have the same specs because they're the same tires. I'm pretty sure these are the Rivian specced tires. Those tires you referred to are the Max Performance 20" and 21", not the Ultra High Performance 22" Michelin built for Rivian Gen 2 Quad.

https://www.nrvcardoctors.com/Shop-For-Tires/view/single/brd/1/b/19/m/17783/tireid/Michelin38317
https://www.oreillymotors.com/Shop-For-Tires/view/single/brd/1/b/19/m/17783/tireid/Michelin38317
https://www.bargaintireoutlet.com/Tires/view/single/brd/1/b/19/m/17783/tireid/Michelin38317
https://www.blackstire.com/Tires/view/single/brd/1/b/19/m/17783/tireid/Michelin38317

All the links herein have the same look, just with different company names. In other words, its probably the same company in different locations with different names or that uses the same source and web service.

These websites remind me when multiple outlet report news from the same source, yet people often mistake them for multiple independent sources to confirm the story.

Not sure why you're defending the V-rating. All I said was that when Michelin publishes the official specs, we'll all know if its Y, W, V rated tire with exact load factor - ha ha!

 

[windblowlc]

All the links herein have the same look, just with different company names. In other words, its probably the same company in different locations with different names or that uses the same source and web service.

These websites remind me when multiple outlet report news from the same source, yet people often mistake them for multiple independent sources to confirm the story.

Not sure why you're defending the V-rating. All I said was that when Michelin publishes the official specs, we'll all know if its Y, W, V rated tire with exact load factor - ha ha!

Where do you think they get the speed ratings from if not from Michelin? You can wait for Michelin to update its web site but it'll be a long wait since Rivian has said not until 2025 on the Quad. FYI, load ratings are different from speed ratings.

 

[iansriv]

Pete, "With great power (835hp) comes great responsibility." Most of the people here that like going fast are probably above average drivers. Most of the people that don't like driving "fast" are making a choice that makes them feel comfortable. What we have not considered is the majority of the drivers post-covid (dont ask why) that are dangerous at any speed.

Even Mario Andretti could be taken out by an idiot.

 

[Dark-Fx]

If the tire is the same model, regardless of size, it will be ultra high performance as you state. Michelin would not downgrade the tire and keep the same name sake. Change of speed rating is possible though, given the load index, but not the characteristics of the tire.

When Michelin officially publishes the tire specs, we'll all know. The official Michelin site only lists PSS5 on their EU sites (not in USA) and only for 20" and 22". The link you provide appears to be a dealer in MD, published data and maybe it's right, maybe not.

Clearly R1 does not need Y rated tire and V is more than sufficient, but there are lots of vehicles sold with very high speed rated tires that never reach the speed, even on paper.

Photos of the tires on the preview vehicles don't lie however. I think it's interesting that they spec'ed a higher load rating on the rear, but I suppose it does pretty much carry the entire weight of the truck during a launch...

Of course people die at private tracks, you are completely missing the point.

At a private track, one expects to drive at extremes or engage with others at high speeds on roads made for this purpose and with extra safety requirements (helmets are a good example).

I don't think I am. If a vehicle is artificially speed limited lower, that's still going to be true at a private track. Rivian would be wrong to only allow it to be uncorked at private tracks, because events like this are on public roads and officially sanctioned: https://www.motortrend.com/events/roadkill-nights-2023-announcement/

 

[mkg3]

...I don’t think most people care about acceleration from 60 to 90. If they did then they would design vehicles with less low end torque. You don’t see them advertising vehicles saying your car goes from 60 to 90. Most vehicles are actually very slow from 60 to 90 because of the gear ratios they use. I don’t think most drivers are worried about passing double semi tractor-trailer trucks while going up a hill. That shouldn’t be a problem in pretty much every modern vehicle that isn’t a Kia Rio. And if a tractor-trailer is going that fast and you’re trying to pass them out while going up a hill, you need to slow the F down.

We disagree that most people don't care. Many care. Many care enough that most auto test publicaitons do not just 0-60 but also ranges (40-60, 60-80, 60-100 and so on).

As for gear ratio, for EVs, with couple of exceptions, it's all single speed and torque is pretty much constant throughout the motor RPM range. It's the software power mapping that changes how vehicles performs throughout the speed range. In the case of Rivian, acceleration definitely decreases after 60~70 mph, as seen by the 1/4 mile speed and time.

In an ICE vehicle with automatic tranny, it downshifts and with manual tranny, the driver downshifts to a lower gear so we care....

 

[mkg3]

Photos of the tires on the preview vehicles don't lie however. I think it's interesting that they spec'ed a higher load rating on the rear, but I suppose it does pretty much carry the entire weight of the truck during a launch...

I don't think I am. If a vehicle is artificially speed limited lower, that's still going to be true at a private track. Rivian would be wrong to only allow it to be uncorked at private tracks, because events like this are on public roads and officially sanctioned: https://www.motortrend.com/events/roadkill-nights-2023-announcement/

Thanks for clearing this up. Tires do not lie!!!

 

[bmwlad24]

I think limits of adhesion start to have a big factor in limiting the top speed. At 3500 lbs with a contact patch of 32 sq in per tire (I’m guessing), 144 sq in total, the weight per sq in (assuming no body roll or tire deformation) is 24 lbs/ sq in. At 7000 lbs, each sq in needs to support 48 lbs. You are going to hit the limits of what the tires can do (brake and turn) earlier.

But all bets are off on the Georgia highways around Hotlanta. 110 seemed to be the average speed last time I was there. Going slower was dangerous

Finally, someone understands why I need the higher top speed here! Funny how the 25 Gen2 demo I drove had a top speed of 130…

 

[Noplacelikeloam]

NO ONE should be driving over 100 mph on PUBLIC roads. Period. This is just stupid and how innocent people die. Go to a private track.

Agreed.

The difference between 'Thinking' you have the skill to control a vehicle even slightly out of control at 100mph on a public road and 'actually' having that skill is you never driving again. Prison or death, and it wont be your choice.

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