The Drive: Why Gen 1 quad devour tires

[Meash20]

The clutch style on the Bosch motors doesn't allow for this type of use. Just stick to conserve for highway/long trips and stay out of lowest height. Conserve mode is still beneficial when used correctly on G1 quads.

Absolutely agree, just did a 1500 mile trip and I run conserve mode but keep the ride height at low or even standard. For one, "lowest" is just too damn rough for any sort of comfortable ride nothing like bottoming out crossing an overpass. Conserve disables the rear motors and saves a lot of juice.

Note: I do not like how the truck swerves/wiggles when trying to accelerate more quickly in conserve mode so you may want to go "all purpose" for your highway on ramps.

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[CharonPDX]

My Gen1 QM needed tires at 20k miles. I wouldn't call that eating tires.

That is eating tires.

Pirelli's warranty on tires bought retail is 50-70,000 miles, depending on the exact tire model. If you're only getting 20,000 miles, that's "eating tires" for sure. (I'm at ~30k miles, and still have 7-8/32nds on each.)

 

[YellowR1T]

Link: https://www.thedrive.com/news/how-r...ode-so-the-r1t-and-r1s-will-stop-eating-tires

TLDR: Relates to amount of control over engagement and disengagement of the Bosch motors at the rear. With Gen 2 in-house motors, there is more control. Thus, allowing them to blend in/out power delivery between the two axles better, to limit tire slip/wear.

I have never launched my Gen 1 and do mostly city driving. At the 7.5k rotation, I was told change them by winter, appx 9k time frame due to tread wear.

 

[UnsungZero_OldTimeAdMan]

I have never launched my Gen 1 and do mostly city driving. At the 7.5k rotation, I was told change them by winter, appx 9k time frame due to tread wear.

Accelerated wear isn’t down to just one factor. There are multiple causes that compound and manifest as accelerated wear. Basically any activity that induces tire slip is wear. And frequent slippage amounts to accelerated wear. Even though you rarely launch, most of your driving is in the city—which means lots of steering angle change (from shallow turns to 90° or more), and sometimes even when stationary, plus how much throttle application and at which point of each turn. Any time you are dragging tread against the ground, you can hear it. Tires are like pecil erasers. Frequently grinding one against paper at low speed and in a small area is still going to result in wear.

Being aware of vehicle dynamics, and conditions that cause excessive wear, plus observing rotation intervals is how one can manage it and try to avoid premature replacement.

 

[lefkonj]

That is eating tires.

Pirelli's warranty on tires bought retail is 50-70,000 miles, depending on the exact tire model. If you're only getting 20,000 miles, that's "eating tires" for sure. (I'm at ~30k miles, and still have 7-8/32nds on each.)

In the 30+ years of driving I don't think I have ever had tires last 50k miles, not sure I know a single person who has but hey anything is possible.

 

[Doug]

In the 30+ years of driving I don't think I have ever had tires last 50k miles, not sure I know a single person who has but hey anything is possible.

We had a 2009 Toyota Highlander hybrid and we got over 80,000 with a set of Bridgestone's on it and we got just over 70,000 with a set of Michelins. But the car had no acceleration but fairly decent gas mileage.

 

[zefram47]

There are probably dozens of threads on this. Gen1 Bosch motors use dog-clutch style axle disconnect vs the meshing gears in the Gen2 and Gen1 with in-house motors. Additionally, the in-house drive units and especially those on Gen2 are far more capable of matching wheel speed and motor speed allowing for what it supposed to be seamless engagement. The fact that all DM folks are tired of the clunk...then they clearly did not get a seamless engagement.

The Gen1 Bosch QM with the dog-clutch setup is not designed to be actuated under load and Rivian claims that the inverters in that setup don't allow enough control to do it automatically as the in-house setup does. You'd think that Rivian would block actuation in software if the demanded load is too high, but sounds like maybe they don't and some people early on managed to destroy their axle disconnects.

The funny thing is the company in the video below is claiming 2800 Nm operating torque, so hypothetically you'd think Rivian could just actuate them whenever they wanted, but early failures would suggest otherwise. They also aren't calling it a dog-clutch, but it kinda is because they're just flipping tabs into notches on the other side of the unit to engage / disengage drive.

https://telematicswire.net/amsted-a...ology-to-rivian-automotive-electric-vehicles/

 

[Sgt Beavis]

22” scorpions. I can probably get another 5k out of them. I say probably because 5k ago I was thinking I had 5k left. They seem to wear slower the more worn th

I got almost 40K miles out of my original Scorpions. I almost never used conserve mode.

 

[madhat]

That is eating tires.

Pirelli's warranty on tires bought retail is 50-70,000 miles, depending on the exact tire model. If you're only getting 20,000 miles, that's "eating tires" for sure. (I'm at ~30k miles, and still have 7-8/32nds on each.)

All of the EV focused tires on that list are max 50k warranty. Of those i think only one (the AT) fits the Rivian and is weight rated. The guys with 40-50k on their tires seem to be running those?
I think there's a reason the stock tires don't have mileage warranties... any new car I've bought has only gone 20k before the tires needed replacing. Yes, that includes a non turbo Mazda3, not all hopped up sports cars.

 

[CharonPDX]

In the 30+ years of driving I don't think I have ever had tires last 50k miles, not sure I know a single person who has but hey anything is possible.

We regularly got 50k+ on our Prius (looking through my records, I purchased a full set of tires four times in ~280,000 miles, plus a few one-offs due to damage that I'll combine into a fifth full set's worth.) My old '99 Hyundai Accent did all of its 105,000 miles on its original set of tires. (They were definitely in need of replacement at the end, though.)

I'm at 30k miles on the Rivian, with more than half tread depth left on the original 20" ATs. (Although I did just yesterday swap them for more efficient road tires, to reserve the ATs for winter/offroad use.)

 

[UnsungZero_OldTimeAdMan]

We regularly got 50k+ on our Prius (looking through my records, I purchased a full set of tires four times in ~280,000 miles, plus a few one-offs due to damage that I'll combine into a fifth full set's worth.) My old '99 Hyundai Accent did all of its 105,000 miles on its original set of tires. (They were definitely in need of replacement at the end, though.)

And none of those cars weigh as much as the R1 or have as much power/torque.

 

[CharonPDX]

And none of those cars weigh as much as the R1 or have as much power/torque.

No, but getting the "warranted distance for retail-purchased of the same tire" shouldn't be literally impossible.

 

[Blueassassin]

I currently have 33k on my gen 1 quad 22” scorpions. I can probably get another 5k out of them. I say probably because 5k ago I was thinking I had 5k left. They seem to wear slower the more worn they get. I drive 50 50 between AP and conserve. Do my own rotations every 5k.

I'm right there with you with my tires. I feel like I might switch them early due to the noise but im also noticing the compound must be getting hard. Seems like im loosing traction on launch and many other areas that I wasnt before.

 

[Hoosierbison]

QUOTE="CharonPDX, post: 826999, member: 3074"]
That is eating tires.

Pirelli's warranty on tires bought retail is 50-70,000 miles, depending on the exact tire model. If you're only getting 20,000 miles, that's "eating tires" for sure. (I'm at ~30k miles, and still have 7-8/32nds on each.)
[/QUOTE]
I'm on my way to have n

That is eating tires.

Pirelli's warranty on tires bought retail is 50-70,000 miles, depending on the exact tire model. If you're only getting 20,000 miles, that's "eating tires" for sure. (I'm at ~30k miles, and still have 7-8/32nds on each.)

 

[jlstan]

Not much substantive, but my Pirelli AT's have a ton of life left at 22k. I'll probably switch due to the road noise, but they're likely good for 35+ for my use.

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