Can you offer more thoughts on the 8 speed transmission? I was specifically looking at getting a 2016+ Cruiser because of the 8 Speed. My thought was that regearing wouldn't be needed with bigger tires. Mainly because with the 8 speed, 1st gear is great for crawling and 7th is good for the highway with a 34-35" tire. Most likely 8th gear wouldn't be very usable at highway speeds with a larger tire.
If you drive your truck off road, the article below might be relevant. It compares the suspension of the LX570 and the Land Cruiser. Spoiler, the Toyota has much better articulation and approach angle. Both models in the comparison were 2020s.
We compare the Toyota Land Cruiser and its Lexus LX 570 on an RTI ramp, which measures suspension articulation.
www.autoblog.com
I'd highly recommend the update. The 8 spd on older calibration drove me nuts and had me wanting the older 6spd. Like others have said, smooths out the lower gears and doesn't have as much of a kick down feel.
I am still undecided on the 8 speed. To be honest I only have 1500 miles on the truck in 10 days, 950 of which were on a trip down South.
Here is what I have observed. My main complaint is the fact that it will downshift to 1st gear when coasting to a stop when it hits exactly 10MPH. Because I tend to roll through stops/yields, this behavior causes the truck to lurch forward as the drivetrain engages in 1st gear and then a subsequent clunky shift into 2nd. It is repeatable, 100% of the time. It can be abated with some extreme feathering of the throttle but I think the logic should be changed so that it shifts into 1st only when the truck is at a complete stop.
Upshifts on the highway when passing are firmer than both the 5 speed in the 100/4Runner (they’re identical), and the 6 speed in the LX. I will say that the 8AT is not afraid to downshift more than one gear at a time. In the 100 and 14LX, the car seems to drop a gear, engage, then drop another gear to wind out the full RPM range when the pedal is mashed to the floor.
Upshifts in the higher gear ranges are firmer. They’re not unsettling so but they are firmer than any Cruiser I have driven before.
Upshifts in lower gears around town can be clunky at times. What’s interesting is the sensation delivered to the passengers is identical across all Aisin truck transmissions I have ever driven. On low throttle acceleration from a dead stop, the truck seems to “lurch” into second gear. It’s as if it doesn’t know how to behave under low load situations. Again - this is identical behavior to the 100 and 14 LX. Think light acceleration in a parking lot or stop and go traffic.
Downshifts are more noticeable under certain situations as well. When coasting on an exist ramp and applying different levels of braking, the transmission feels like its clunking into gear and they are definitely noticeable - more so than the 100 and 14 LX.
Another behavior that is different than the 5 and 6 speed AT’s is that when applying more than average braking force at cruising speed, the transmission will downshift to a lower gear than necessary to aid with engine braking. For example, if driving at 85 and applying a decent amount of brake pedal, the transmission will downshift into 5th as if to either anticipate aggressive acceleration or assistive engine braking.
Cruise control is still retarded. The car will happily change gears for miles on ascents trying to maintain highway speed. I don’t know why manufacturers can’t correlate topographic data with GPS location to make the overall experience better and appear more intelligent.
I was surprised to see how well the truck held 8th gear. It has no problem maintaining highway speed, even into headwinds, in 8th gear. Application of a little throttle and the car will accelerate in 8th too - with the torque converter locked.
HTH. For what it’s worth, there were reports than the 8AT was only offered in the United States. That is false - browsing the Dubai, Oman, and Qatar websites shows that the top of the line 5.7L is offered only with the 8AT. Makes me feel better since this is not a completely one off transmission and that they are selling it to a market where it will be pushed to the limits in the desert. I do hope to see the exact same 8AT in the Tundra - again, just so that it’s not a one off run over a few production years in one vehicle.....