Predicted range

[Der]

I know there are many things that influence range on EVs, but the engineer in me wants to have a number to aim for.

I am picking up my R1T (PDM, Standard +) on 3/28. I hope that it will have at least an 80% charge, is that a good assumption? If it is 80% should I see about 252 mile range?

I picked mine up at the Atlanta SC on 3/15 and it was fully charged 100%! They told me to run it down to at least 20 % before charging.

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[Billyt1963]

I picked mine up at the Atlanta SC on 3/15 and it was fully charged 100%! They told me to run it down to at least 20 % before charging.

Thanks. I have a 62 mile drive to the service center. Even if they just charge to 80% I should be fine. It will be interesting to see what they do and what they tell me.

 

[stewart]

I know there are many things that influence range on EVs, but the engineer in me wants to have a number to aim for.

I am picking up my R1T (PDM, Standard +) on 3/28. I hope that it will have at least an 80% charge, is that a good assumption? If it is 80% should I see about 252 mile range?

I find that it depends on driving mode and speed. If I switch to Efficiency Mode on highways and do 70MPH I get about 2miles per kWh. If I am driving back roads and am in the 40-50MPH range I can get closer to 2.5-2.8 miles per kWh, in normal driving mode. Tire pressure is a factor keep them inflated to the target level.

 

[Billyt1963]

I find that it depends on driving mode and speed. If I switch to Efficiency Mode on highways and do 70MPH I get about 2miles per kWh. If I am driving back roads and am in the 40-50MPH range I can get closer to 2.5-2.8 miles per kWh, in normal driving mode. Tire pressure is a factor keep them inflated to the target level.

Thanks for the tips.

 

[Glembi2]

How often are we supposed to let the battery get to 20% before recharging? I’ve never let it drop below 50% and I leave it plugged in when not in use.

I gave up on trying to follow battery best practices when the guidelines changed every few years. But are there best practices for an EV?

 

[HaveBlue]

50% is the happiest state of charge for the battery.

They will deliver it with 100% charge when you pick it up. They do that for everyone.

 

[emoore]

50% is the happiest state of charge for the battery.

They will deliver it with 100% charge when you pick it up. They do that for everyone.

Not really. Mine was around 75%, my neighbors about the same. And plenty of people on the forums that weren't delivered at 100%. No reason to unless you have a long drive home.

 

[HopefullyR1S]

At pickup our R1S (DM,LG,22) was at 80% which is around 264 miles.
Our drive home was 194 miles. The guide showed me how to cancel the suggested in route charging and said I would be fine.
Estimated arrival was 30 miles. We arrived home with 70 left. The anxiety was real for a while.
Trust the trip gauge and always charge when you can.

edit to add: what I have read suggests keeping the battery between 50-70% as much as possible. Avoid letting battery go below 10% if possible and try not to leave for extended periods at 100% charge.
A lot of small charges is better than a few large charges.

 

[Billyt1963]

Thanks everyone for the great information. I reached out to my SC today, just checking in, and asked was my vehicle there. Reply was “It is still on the way”. Sometimes I can’t be patient enough. My pickup is Thursday, but I had hoped that it would be there today.

 

[HopefullyR1S]

Based on 21’s being the most efficient, I assume 22’s are better than 20’s, can anyone confirm this? Also how much of a hit are 22’s from 21’s? I just want more tire choices, so 21’s are not an option for me

yes 22s have better range than the 20s.

We have around 2500 miles (all winter, dec 30th-now) and at 70% we have 232 miles; so 331 at full charge. I believe the 21s should get 352 miles. So 21 mile difference for me.
Edit: 342 changed to 352

 

[Epicloop]

If it is 80% should I see about 252 mile range?

If you drive conservatively enough.

 

[BigBambu]

Based on 21’s being the most efficient, I assume 22’s are better than 20’s, can anyone confirm this? Also how much of a hit are 22’s from 21’s? I just want more tire choices, so 21’s are not an option for me

The wheel and the tire design both contribute to the efficiency of an EV. The weight and aerodynamic design of the wheel have an effect on that efficiency separate from the tire. It so happens that the most efficient design offered from Rivian is the one you have. This is a complicated subject, especially because wheel makers may or may not reliable test results. With a wheel, the most obvious factor is the weight. Less is better, usually. Now with a tire, all manufacturers have a "rolling resistance" and "hardness" rating of the rubber. The lower the rolling resistance the better. With tire hardness, the harder the better.

You can turn this into a real research project when the time comes for a new wheel and/or tire for your vehicle.

Hope that helps.

 

[Lisa & Bob]

Wow! Biggest bump in MPG I got with my old ICE was 20% from drafting a double semi for a couple hours.

I drafted a Wal Mart semi which is throttled to 65 mph for about half an hour an I was just below 4kw for about thirty minutes. Speed eats electrons

 

[VSG]

I drafted a Wal Mart semi which is throttled to 65 mph for about half an hour an I was just below 4kw for about thirty minutes. Speed eats electrons

Speed eats gasoline too. And for the same reasons.

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