[NomoTesla]

Originally Posted by ubercruise

I mean I’m just talking about accelerating quickly to the speed limit (or whatever the prevailing 5-10 over sentiment is). Not going 80 in a 45 or something, or weaving in and out of lanes. I don’t really think it’s all that unsafe to accelerate to speed in 5 seconds instead of 8 in a straight line. Less efficient sure, but 99% of near misses and accidents on my commute are people not paying attention or weaving and being crazy, not people strictly accelerating quickly. When I drive slow I always get some aggro in their giant brodozer tailgating hard which stresses me out way more.

Different strokes is all, I can get the allure of trying to get max efficiency. But for me one of the draws was the sprightly feel of the car and its power compared to Audi/MB’s offerings so I like using the torque. Car has already slashed my fuel costs by like 85% as is compared to my old ICE.

The tradeoff when on a road trip is the difference between greater efficiency and skipping a charge stop versus accelerating and driving faster but with increased charging stops. I'm not sure which one is faster in the real world. But at least when I drive efficiently I'm also saving wear-and-tear. Not a bad thing when driving 3,000 miles roundtrip.

[ubercruise]

Originally Posted by NomoTesla

The tradeoff when on a road trip is the difference between greater efficiency and skipping a charge stop versus accelerating and driving faster but with increased charging stops. I'm not sure which one is faster in the real world. But at least when I drive efficiently I'm also saving wear-and-tear. Not a bad thing when driving 3,000 miles roundtrip.

On a road trip I completely agree and I try to go max efficiency. I’m just moreso talking about my daily surface street commute.

[ggalanis]

Originally Posted by NomoTesla

The tradeoff when on a road trip is the difference between greater efficiency and skipping a charge stop versus accelerating and driving faster but with increased charging stops. I'm not sure which one is faster in the real world. But at least when I drive efficiently I'm also saving wear-and-tear. Not a bad thing when driving 3,000 miles roundtrip.

Acceleration per say is meaningless in a long trip, a few seconds here and there in a 10 hour trip is not important.

Under normal conditions, driving faster gets you to your destination quicker. Basically there is an efficiency above which it would be faster and under which it would be slower, but it is lower than you'd think. In bad conditions, you can perhaps hit this limit at way slower speeds.

I played around with ABRP to see the hypothetical effect. Say with my current default settings (120% speed limit, charging overhead set at 5 minutes) a trip to Halifax 1288km away is estimated to take 12h7m (10h26 driving, 1h27 charging with 3 stops).

If I set it to cruise at 160% of the speed limit, I am now needing 5 charges... but the overall time is 10h45 (7h54 driving, 2h26 charging).

At 200% speed limit, which if I recall the speed limits along that trip correctly would actually be faster than the iX can actually go, ABRP says 8 charges now, but only 10h29m overall (6h23 driving and 3h25 charging)

You start getting very diminishing returns for the extra speed at the top end.

The tipping point as of now is 193% of the speed limit where you get the fastest route at 10h25m total.
This equates to driving at 193km/h (120mph) where the limit is 100km/h(62mph) and 212km/h (133mph) where it is 110km/h(70mph) [which is faster than the ix can even go].

[ricerboi]

Originally Posted by NomoTesla

The tradeoff when on a road trip is the difference between greater efficiency and skipping a charge stop versus accelerating and driving faster but with increased charging stops. I'm not sure which one is faster in the real world. But at least when I drive efficiently I'm also saving wear-and-tear. Not a bad thing when driving 3,000 miles roundtrip.

I don’t understand what wear-and-tear you think you’re speaking of. It’s nice that you want to hypermile like a grandma in a Prius but driving the iX slightly faster isn’t going to wear it any quicker other than a few more thousand miles out of your OEM tires. I’ve driven my iX hard in all sorts of conditions for the last 84k miles and it’s as quick and comfortable as the day I got it. I’ve done 6000 mile roadtrips and there’s no extra “wear and tear.”

Now it’s your car you drive it how you want. The other 90% of us will probably push it on the daily and semi-hypermile on trips to save a charging stop but not drive 70mph on a 70mph speed limit and have the 85-90mph speed of traffic blow by us.

[NomoTesla]

Originally Posted by ricerboi

I don’t understand what wear-and-tear you think you’re speaking of. It’s nice that you want to hypermile like a grandma in a Prius but driving the iX slightly faster isn’t going to wear it any quicker other than a few more thousand miles out of your OEM tires. I’ve driven my iX hard in all sorts of conditions for the last 84k miles and it’s as quick and comfortable as the day I got it. I’ve done 6000 mile roadtrips and there’s no extra “wear and tear.”

Now it’s your car you drive it how you want. The other 90% of us will probably push it on the daily and semi-hypermile on trips to save a charging stop but not drive 70mph on a 70mph speed limit and have the 85-90mph speed of traffic blow by us.

I follow the law, not the masses. If you want to drive 90 MPH, that's fine, but don't judge those who choose not to break the law. The speed limit is not a suggestion. It is a MAXIMUM. I've been known to go 5 over, but to suggest it's okay to go 90 MPH in a 70 MPH zone (20 MPH over) is suggesting that we all participate in criminal speeding and a class 3 misdemeanor. I'm not in such a hurry that I'm going to risk doing that to myself or risk the lives of others. Never.

I enjoy reduced tire wear, reduced thermal stress to my vehicle, reduced battery degradation, and reduced stress to myself having to speed, handle potentially dangerous situations, and having to change lanes all the time (which is the #1 source of accidents).

I go out for a joy ride every once in a while, but a road trip is not a time for that. Especially with a spouse and two beloved dogs in the car. I would never risk their lives. EVER.

[ggalanis]

Originally Posted by NomoTesla

I follow the law, not the masses. If you want to drive 90 MPH, that's fine, but don't judge those who choose not to break the law. The speed limit is not a suggestion. It is a MAXIMUM. I've been known to go 5 over, but to suggest it's okay to go 90 MPH in a 70 MPH zone (20 MPH over) is suggesting that we all participate in felony speeding. I'm not in such a hurry that I'm going to risk doing that to myself or risk the lives of others. Never.

I enjoy reduced tire wear, reduced thermal stress to my vehicle, reduced battery degradation, and reduced stress to myself having to speed, handle potentially dangerous situations, and having to change lanes all the time (which is the #1 source of accidents).

I go out for a joy ride every once in a while, but a road trip is not a time for that. Especially with a spouse and two beloved dogs in the car. I would never risk their lives. EVER.

The main issue with speed limits is that they are arbitrarily set in many cases and many were not revised as cars got better over time. Given that ticketing people for going faster than these limits is a decent source of revenue for cities/police departments, they have a vested interest in keeping them lower than they should be.

There are areas where going 90mph is safe. When you drive in the desert, with very straight flat roads, perfect visibility, well maintained roads, nothing but sand and dirt on the side of the road, as long as you have a car equipped to go that fast (i.e. good brakes, tires, etc) there is nothing unreasonably dangerous about going that speed in those conditions.

What makes it more dangerous is people forcing the faster traffic to go around them by hogging the passing lane. If you are actually passing slower traffic, most speeders will not ride your bumper and just let you pass the even slower cars, but they expect you to move over when you're done. When people don't get out of their way, they'll start by riding your bumper, which is risky, or make a pass on the right to avoid you, which can also be risky as other traffic may not be expecting that move. If proper lane discipline was respected, the fast moving traffic would be happier and less aggressive and there would be less accidents overall.

[NomoTesla]

Originally Posted by ggalanis

The main issue with speed limits is that they are arbitrarily set in many cases and many were not revised as cars got better over time. Given that ticketing people for going faster than these limits is a decent source of revenue for cities/police departments, they have a vested interest in keeping them lower than they should be.

The reason for lower speed limits is that our roads are in such poor shape that driving any faster will ruin your suspension. It's a national embarrassment. Lower limits are also more fuel efficient, both for ICE and EVs. It causes reduced energy usage, less stress on the grid, fewer refueling stops, less waste, and when there is an accident, increased survivability.

Originally Posted by ggalanis

There are areas where going 90mph is safe. When you drive in the desert, with very straight flat roads, perfect visibility, well maintained roads, nothing but sand and dirt on the side of the road, as long as you have a car equipped to go that fast (i.e. good brakes, tires, etc) there is nothing unreasonably dangerous about going that speed in those conditions.

You obviously have not driven the I-10 from Arizona to California. The right lane is basically unusable for large stretches due to the number of potholes and grooves created by semi-trucks. Fly over one of those at 90 MPH and you'll quickly find yourself stranded with a flat or a broken wheel, or both.

Originally Posted by ggalanis

What makes it more dangerous is people forcing the faster traffic to go around them by hogging the passing lane. If you are actually passing slower traffic, most speeders will not ride your bumper and just let you pass the even slower cars, but they expect you to move over when you're done. When people don't get out of their way, they'll start by riding your bumper, which is risky, or make a pass on the right to avoid you, which can also be risky as other traffic may not be expecting that move. If proper lane discipline was respected, the fast moving traffic would be happier and less aggressive and there would be less accidents overall.

When I drive the limit, I'm always as far right as practical. Quite often when I'm driving the speed limit, I'm still passing other cars that are driving even slower. Also, there are large stretches of the HOV lane in Southern California where you cannot move over. You are locked-in with a double line. Moving over and crossing those lines will result in a ticket of several hundred dollars. Once you're in that lane, you have to wait for the double lines to go away before you can shift right.

[ggalanis]

Originally Posted by NomoTesla

The reason for lower speed limits is that our roads are in such poor shape that driving any faster will ruin your suspension. It's a national embarrassment. Lower limits are also more fuel efficient, both for ICE and EVs. It causes reduced energy usage, less stress on the grid, fewer refueling stops, less waste, and when there is an accident, increased survivability.

I hear a lot about the US having bad roads but everytime I've gone to the US the roads have been great relative to ours here.

People pay for their fuel or energy, the government should not be forcing you to be efficient with it. It is, dare I say, unamerican.
Yes the slower you go the better you so in an accident. My point is not to drive 100mph all the time, but when conditions and traffic (or lack thereof) allows for it.

Originally Posted by NomoTesla

You obviously have not driven the I-10 from Arizona to California. The right lane is basically unusable for large stretches due to the number of potholes and grooves created by semi-trucks. Fly over one of those at 90 MPH and you'll quickly find yourself stranded with a flat or a broken wheel, or both.

That stretch of road is a little out of the way for me. I have however driven from Phoenix to Vegas when i had gone to Phoenix for a conference many years ago. All the roads were great. Long stretches with absolutely nothing around. The people zooming past me were not doing anything dangerous.(I was not the one going 90+ ish as I had not looked up how seriously speed was enforced along this path and could not vouch for the rental car's condition/tires)

Originally Posted by NomoTesla

When I drive the limit, I'm always as far right as practical. Quite often when I'm driving the speed limit, I'm still passing other cars that are driving even slower. Also, there are large stretches of the HOV lane in Southern California where you cannot move over. You are locked-in with a double line. Moving over and crossing those lines will result in a ticket of several hundred dollars. Once you're in that lane, you have to wait for the double lines to go away before you can shift right.

Typical locations where there are HOV lanes are not the areas I am saying would be safe to drive at very high speeds. That is not safe in the middle of a city area with high traffic. I'm talking about in between metropolitan areas where there is nothing around, straight roads, good visibility, etc. like when i go from the Montreal area to Toronto. Once you are about an hour or so from Montreal, the road is very boring and very straight. For the longest time that road had a limit of 100km/h (62mph) the entire way. They eventually increased it to 110km/h (70mph) in Ontario for some sections, but that is just way too slow for that road.

[LVBMW]

Originally Posted by NomoTesla

I follow the law, not the masses. If you want to drive 90 MPH, that's fine, but don't judge those who choose not to break the law. The speed limit is not a suggestion. It is a MAXIMUM. I've been known to go 5 over, but to suggest it's okay to go 90 MPH in a 70 MPH zone (20 MPH over) is suggesting that we all participate in felony speeding. I'm not in such a hurry that I'm going to risk doing that to myself or risk the lives of others. Never.

I enjoy reduced tire wear, reduced thermal stress to my vehicle, reduced battery degradation, and reduced stress to myself having to speed, handle potentially dangerous situations, and having to change lanes all the time (which is the #1 source of accidents).

I go out for a joy ride every once in a while, but a road trip is not a time for that. Especially with a spouse and two beloved dogs in the car. I would never risk their lives. EVER.

There is no such thing as “felony speeding” in Arizona. In certain situations, speeding could be a misdemeanor which is more serious than just a speeding ticket. But never a felony for speeding alone.

[LVBMW]

Originally Posted by ggalanis

I hear a lot about the US having bad roads but everytime I've gone to the US the roads have been great relative to ours here.

People pay for their fuel or energy, the government should not be forcing you to be efficient with it. It is, dare I say, unamerican.
Yes the slower you go the better you so in an accident. My point is not to drive 100mph all the time, but when conditions and traffic (or lack thereof) allows for it.


That stretch of road is a little out of the way for me. I have however driven from Phoenix to Vegas when i had gone to Phoenix for a conference many years ago. All the roads were great. Long stretches with absolutely nothing around. The people zooming past me were not doing anything dangerous.(I was not the one going 90+ ish as I had not looked up how seriously speed was enforced along this path and could not vouch for the rental car's condition/tires)


Typical locations where there are HOV lanes are not the areas I am saying would be safe to drive at very high speeds. That is not safe in the middle of a city area with high traffic. I'm talking about in between metropolitan areas where there is nothing around, straight roads, good visibility, etc. like when i go from the Montreal area to Toronto. Once you are about an hour or so from Montreal, the road is very boring and very straight. For the longest time that road had a limit of 100km/h (62mph) the entire way. They eventually increased it to 110km/h (70mph) in Ontario for some sections, but that is just way too slow for that road.

If you visit Texas there is a stretch of road there with a posted 85 mph speed limit.

[NomoTesla]

Originally Posted by LVBMW

There is no such thing as “felony speeding” in Arizona. In certain situations, speeding could be a misdemeanor which is more serious than just a speeding ticket. But never a felony for speeding alone.

Corrected, thank you. It's called "criminal speed" here and is a class 3 misdemeanor. That surely changes everything, doesn't it?

[exxxviii]

Fun little drive comparison tidbit… this morning I did a round trip that was 16 miles each way. It was mostly highway, so average speed was around 45 MPH. The conditions were almost identical both ways - outside temperature was around 70° F with around 90% humidity. The only difference was that on the way home, I had Max AC most of the way. Efficiency on the way out was 3.6 miles kWh and the way back was 3.0 miles/kWh.

Max AC cost me around 0.6 miles/kWh efficiency.

[LVBMW]

Originally Posted by NomoTesla

Corrected, thank you. It's called "criminal speed" here and is a class 3 misdemeanor. That surely changes everything, doesn't it?

No, not at all! I already questioned the credibility of most of your posts. This only confirms it!

[ubercruise]

Originally Posted by ggalanis

That stretch of road is a little out of the way for me. I have however driven from Phoenix to Vegas when i had gone to Phoenix for a conference many years ago. All the roads were great. Long stretches with absolutely nothing around. The people zooming past me were not doing anything dangerous.(I was not the one going 90+ ish as I had not looked up how seriously speed was enforced along this path and could not vouch for the rental car's condition/tires)


Typical locations where there are HOV lanes are not the areas I am saying would be safe to drive at very high speeds. That is not safe in the middle of a city area with high traffic. I'm talking about in between metropolitan areas where there is nothing around, straight roads, good visibility, etc. like when i go from the Montreal area to Toronto. Once you are about an hour or so from Montreal, the road is very boring and very straight. For the longest time that road had a limit of 100km/h (62mph) the entire way. They eventually increased it to 110km/h (70mph) in Ontario for some sections, but that is just way too slow for that road.

We are seriously spoiled with the road conditions in the southwest. Growing up in the midwest was pothole city, here it's like glass in comparison. Yeah there's some rough pockets like anywhere else but the majority of the roads are in great shape (not having freezing/warming cycles, ice etc obviously plays a huge part).

I do agree speed limits can and should be raised where prudent. If only people would follow the "stay right except to pass" and then when they do pass, do so quickly and get back over... things would move a whole lot better. I don't often praise Texas but the 85mph speed limit in BFE makes sense to me. Obviously the chuckleheads weaving in and out of city traffic and trying to go 100 there is a different story. I just felt silly in the commute for my first job in the Chicagoland area when the highway speed limit was 55mph and just about everyone in the left lane was going 30+ over, and nobody bats an eye.

[NomoTesla]

Originally Posted by exxxviii

Fun little drive comparison tidbit… this morning I did a round trip that was 16 miles each way. It was mostly highway, so average speed was around 45 MPH. The conditions were almost identical both ways - outside temperature was around 70° F with around 90% humidity. The only difference was that on the way home, I had Max AC most of the way. Efficiency on the way out was 3.6 miles kWh and the way back was 3.0 miles/kWh.

Max AC cost me around 0.6 miles/kWh efficiency.

Even on our hottest desert days, I keep my AC at 75º/Auto and I'm freezing. You must really like it cold! lol

[exxxviii]

Originally Posted by NomoTesla

Even on our hottest desert days, I keep my AC at 75º/Auto and I'm freezing. You must really like it cold! lol

I did an 8 mile run in 90% humidity. I was baked. Max AC is one of the greatest features ever invented for cooling off an overheated body. By the time I got home, I was pretty chilly!

[ubercruise]

Sheesh, an 8 yard walk at my in-laws place in Texas in 90% RH to grab a beer from the garage and I feel like I need a towel.

I am experimenting with keeping my cabin cooler this summer in AZ. I usually also keep it at 75F but I'm trialing 72 just to see how much of an impact it has for me (but also because I think while I do want my kid to acclimate to the heat eventually, he's still happier in <74).

I do use Max AC sometimes to cool off quickly after a hike, or if I buy a case of beer/drinks to put in my trunk and want to keep it from warming up too much before I get home.

[NomoTesla]

Last week we had a burst of monsoonal moisture. I picked weeds in my yard and washed my car at 6am. By the time I was done, I was soaked in sweat and could have probably used an ER visit! lol

Pre-cooling the cabin is a game-changer.