Tire Swap to 22" Michelin Defender LT275/50r22

[keiferedits]

Just so you know, in case this is your first EV, any new tires will drop the range by 5~15% compared to the worn tire you replaced. Since the 119 load index tires are significantly heavier than the 116 Pirellie when new, it would have a larger impact on the range due to larger rotational inertia due to more mass..

It has nothing to do with the brand of tire. It has more to do with the unsprung rotational mass. This happens to ICE vehicles too but not to the great extent. You would notice loss of few % MPG and notice slower acceleration. On EVs, the added weight affects the power consumption to accelerate vehicles. Perhaps you do more city driving than highways? Any time moving the vehicle from stop takes more power due to increase in rotational inertia than before.

I have the LTX M/S2 with 115 load index. When new, both Michelin and Pirelli weighs about the same (~38 lbs). The 119 version weights 53 lbs or 15 lbs/40% heavier.

When it was first installed the Michelins, my range dropped about 5% and now with roughly 23k miles on the tires, the range has come backed to, or is better than what I was getting with the 22" Pirellie Scorpion Zero AS.

In my situation i wanted to give the 119h a try even though it was over spec but the range drop was so sharp that i decided to go with something similar to the original tires. i guess taking less passengers could also work but the family really doesn't respond well to walking on the freeway.

Sponsored

 

[Budman]

Just so you know, in case this is your first EV, any new tires will drop the range by 5~15% compared to the worn tire you replaced. Since the 119 load index tires are significantly heavier than the 116 Pirellie when new, it would have a larger impact on the range due to larger rotational inertia due to more mass..

It has nothing to do with the brand of tire. It has more to do with the unsprung rotational mass. This happens to ICE vehicles too but not to the great extent. You would notice loss of few % MPG and notice slower acceleration. On EVs, the added weight affects the power consumption to accelerate vehicles. Perhaps you do more city driving than highways? Any time moving the vehicle from stop takes more power due to increase in rotational inertia than before.

I have the LTX M/S2 with 115 load index. When new, both Michelin and Pirelli weighs about the same (~38 lbs). The 119 version weights 53 lbs or 15 lbs/40% heavier.

When it was first installed the Michelins, my range dropped about 5% and now with roughly 23k miles on the tires, the range has come backed to, or is better than what I was getting with the 22" Pirellie Scorpion Zero AS.

Well, I've had three sets of Pirelli all seasons and have not detected any change in range between new and up to 35,000 miles. And I check very carefully.

I don't much care if they eventually get better efficiency, I want better efficiency all the time....

 

[mkg3]

In my situation i wanted to give the 119h a try even though it was over spec but the range drop was so sharp that i decided to go with something similar to the original tires. i guess taking less passengers could also work but the family really doesn't respond well to walking on the freeway.

Just to clarify, its not the added weight; rather, its the increase in the rotational inertia.

Carrying more weight in the cabin (passengers) will not affect the range the same as adding unsprung rotating weight. It will affect the range a very small percentage - nothing like what you would see from heavier tires. Four tires that weigh 15 lbs each adds total of 60 lbs. Adding a child/person in the cabin will not affect the range the way the heavier tires do.

 

[mkg3]

Well, I've had three sets of Pirelli all seasons and have not detected any change in range between new and up to 35,000 miles. And I check very carefully.

I don't much care if they eventually get better efficiency, I want better efficiency all the time....

Range and efficiency are not the only reason to have different tires.

You are right in that these days, auto mfg works closely with the tire companies to develop optimized tire for the particular vehicle. Everything from slightly different compounds, tread pattern and rolling resistance. Pirelli tires on Rivian were developed for Rivian characteristics.

 

[bc81620]

I just put these on my truck Friday evening. Discount Tire inflated to 48/49. I think I need to bump that up to 60

 

[CANCERDOC]

Just so you know, in case this is your first EV, any new tires will drop the range by 5~15% compared to the worn tire you replaced. Since the 119 load index tires are significantly heavier than the 116 Pirellie when new, it would have a larger impact on the range due to larger rotational inertia due to more mass..

It has nothing to do with the brand of tire. It has more to do with the unsprung rotational mass. This happens to ICE vehicles too but not to the great extent. You would notice loss of few % MPG and notice slower acceleration. On EVs, the added weight affects the power consumption to accelerate vehicles. Perhaps you do more city driving than highways? Any time moving the vehicle from stop takes more power due to increase in rotational inertia than before.

I have the LTX M/S2 with 115 load index. When new, both Michelin and Pirelli weighs about the same (~38 lbs). The 119 version weights 53 lbs or 15 lbs/40% heavier.

When it was first installed the Michelins, my range dropped about 5% and now with roughly 23k miles on the tires, the range has come backed to, or is better than what I was getting with the 22" Pirellie Scorpion Zero AS.

Correct! The higher tread depth of new tires increases rolling resistance as well so all new tires will have an impact on range. As the tires wear down they will come closer to the stock tires range.

 

[keiferedits]

I just put these on my truck Friday evening. Discount Tire inflated to 48/49. I think I need to bump that up to 60

My guess is you'll need to go to 60, that's where i found some improvement. One thing to be aware of, both my Tire Shop and Rivian did not support the Michelins at 60 with the R1S unless carrying a heavy load. That being said, I'm happier running the Hankooks at this point and it helps that the tire can be run at manufacturer spec.

Sponsored