Pirelli Scorpion All Terrain Plus versions?

[sanjaya01]

I am still looking for lower-cost replacement tire option. I see two different versions of the tire, the RIvian version at $448 and the other at $360. The speed rating and load range are different. Is that the only difference? I wouldn't mind buying the cheaper version, especially since it has a better load range and includes a warranty. Let me know if I am missing something. Thanks.

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[UnsungZero_OldTimeAdMan]

One is for EV application. The other isn't.

 

[richpike]

The weight is significantly different between them (more rotational mass in the non-Rivian version) and if I had to venture a guess, I'd say the Rivian version has less rolling resistance. With that said, lots of people have gone to other AT tires that are heavier and likely higher in rolling resistance and haven't seen a significant impact in range (that is already down quite a bit from normal road tires).

-Rich

 

[UnsungZero_OldTimeAdMan]

With that said, lots of people have gone to other AT tires that are heavier and likely higher in rolling resistance and haven't seen a significant impact in range (that is already down quite a bit from normal road tires).

BFG K02/03 are reported to exhibit 10-15% additional efficiency loss over factory Pirellis ATs. Relative to efficiency of ASs on the 21" config'ed R1... that is quite significant (to those concerned). It's subjective.

Keep an eye on the new Toyo Open Country A/T III EV. But, I have a feeling it won't be much cheaper than the Pirelli. Existing non-EV version is $434 at TireRack.

 

[NY_Rob]

The OEM tire does not have a treadwear warranty, even if you purchase it through Tire Rack, etc... as that is still an OEM tire. Call Pirelli and they will substantiate my statement. If you purchase the non-OEM version, it does carry a tread wear warranty.

 

[richpike]

BFG K02/03 are reported to exhibit 10-15% additional efficiency loss over factory Pirellis ATs. Relative to efficiency of ASs on the 21" config'ed R1... that is quite significant (to those concerned). It's subjective.

Keep an eye on the new Toyo Open Country A/T III EV. But, I have a feeling it won't be much cheaper than the Pirelli.

That is significant. There are a number of folks in the Rocky Mountain FB group who have moved to Falken Wildpeak AT3s and Toyo OC AT3 (all similar to the BFG) and they all seem to report minor to no impacts versus the previous ATs. Of course, none of it is scientific, so take it with a grain of salt. My engineering mind tells me higher rotating mass will have an impact, but as I’ve personally seen when towing, weight is less important than aero for an EV. [shrug]

-Rich

 

[iansriv]

Interesting. I'm only 3k into my ATs and will look at AS tyres when the time comes. Not sure what the AS options are. I don't see much snow or off-road so AS should suite me just fine. I plan to rotate every 5k so, hope the ATs last a bit. They do look cool though.

 

[UnsungZero_OldTimeAdMan]

That is significant. There are a number of folks in the Rocky Mountain FB group who have moved to Falken Wildpeak AT3s and Toyo OC AT3 (all similar to the BFG) and they all seem to report minor to no impacts versus the previous ATs. Of course, none of it is scientific, so take it with a grain of salt. My engineering mind tells me higher rotating mass will have an impact, but as I’ve personally seen when towing, weight is less important than aero for an EV. [shrug]

-Rich

Now that you mention it… I recall seeing some shares running 65 psi and getting almost incredible mi/kWh numbers. Can't remember if it was a 10-ply or LT.

 

[zefram47]

Now that you mention it… I recall seeing some shares running 65 psi and getting almost incredible mi/kWh numbers. Can't remember if it was a 10-ply or LT.

65 psi is probably a bit high, but when moving from P-metric to LT tires you do actually need to increase the pressure over the Rivian's recommendation. The OE Pirelli is rated for 51 psi max with Rivian saying 48 psi...so you're at 94% of the max load rating of 2760 lbs. If you run an E-load LT tire (say the same Pirelli) the load rating is 3750 lbs at 80 psi. So take the ratios of load to pressure and you wind up with the Rivian recommended pressure suggesting 2598 lbs and a typical E-load tire requiring 55.4 psi to match the load factor. Chalk test still recommended, but it's a good starting point.

 

[Greg Chick]

I'm running 52 psi on my 21" Pirelli OEM AT's. It's below freezing here and at best it is 55 degrees in day time. If I use 48 psi on a cold day/night it drops to 45 psi or lower.
My R1T is not hauling it's allowed payload, so I guess I should not fear 54 or 55 psi when they warm up?
I really think that a tire choice by a Mfgr. needs to have a larger spread of weight/psi with relation to temp. and warm up. Like having a tire that will take 65 psi but the door jamb says 48 or so there is room for the inevitable thermal expansion.

 

[Kärsti]

Now that you mention it… I recall seeing some shares running 65 psi and getting almost incredible mi/kWh numbers. Can't remember if it was a 10-ply or LT.

2000 miles on Toyo Open Country AT3, and prior to the last OTA, I was seeing slightly better highway efficiency than the Pirelli's running 62 PSI.

 

[Oldsmobile_Mike]

Unless I have it backwards, I believe you want these:

Not these:

 

[sanjaya01]

I am seriously considering the non-EV Pirelli ATs. They are a couple of lbs per tire heavier. I am not sure if that's going to be that much of an issue, even though it is unsprung weight. They are less efficient, but I think I appreciate the higher load rating and warranty. Plus a bit cheaper.

Or just switch to all-season tires. They should get better range, wear, and be lower cost. I don't offroad, at least not yet. But the ATs do look cool. I wouldn't mind doing more camping and going on a few trails, we have plenty here in SoCal. I have a couple of weeks before I will commit.

 

[UnsungZero_OldTimeAdMan]

Or just switch to all-season tires. They should get better range, wear, and be lower cost. I don't offroad, at least not yet. But the ATs do look cool. I wouldn't mind doing more camping and going on a few trails, we have plenty here in SoCal. I have a couple of weeks before I will commit.

If you want range/efficiency above all else and don't have to think much about snow... AS is definitely the more sensible path.

 

[sanjaya01]

I didn't see the AS in 275/65/20.

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