epowermarine
Well-Known Member
- First Name
- Todd
- Joined
- Sep 19, 2022
- Threads
- 1
- Messages
- 63
- Reaction score
- 100
- Location
- South Florida
- Vehicles
- R1T
- Thread starter
- #1
I drive my 2022 R1T Quad on a 390 mile RT to/from my office once/week. Location is South Florida to/from the Orlando area. For testing purposes I’ve used the exact same roads, stops, and speeds (as much as I can control) for each trip. The segment north is 80% single lane state roads (mostly 72mph), and the trip home south is 95% route 95 (Mad Max style) interstate (mostly 75mph).
The truck came with the OEM 21” setup, which provided a great ride, quiet, zero vibration, and were very smooth. They wore perfectly evenly, but at 21,000 miles I was at 4/32 all around and I wanted to try something else.
The new Platinum’s are most of the above, but slightly less perfect in each category. Also, these wheels/tires feel noticeably heavy while driving, probably because they are in fact heavier (I don’t know exactly how much). This is primarily noticeable during slow speed turning, accelerating, and one petal stops from 70mph-0 while using only regen as braking force.
All of the driving was done as follows: 100% All Purpose mode, auto height, max regen, soft or moderate suspension, AC always on 72degrees, seat AC on max, stereo on, radar detector on. Majority using cruise control, and maybe 50% use of Highway Assist while on the southbound interstate leg. 21” tire pressure was 48-49psi cold, 20” was 53-54psi cold.
As you contemplate my results, realize that I chose a non-OEM tire size. The 285/60/20 is .6” larger in diameter and .5” wider than my 21” OEM. This puts the overall diameter between OEM 20” and 21” setups, so reprogramming the truck really isn’t necessary. My speedometer shows about 1% difference over 60 or so mph. Using my radar detector as a GPS speed readout, sometimes it reads the same as the dash shows, and sometimes it shows 1mph faster. With the 21’s this used to always match exactly.
Finally, we already know that all new tires are inherently less efficient then worn tires. I don’t know how much in terms of %, but I’m assuming that my efficiency will only improve as the Platinum’s wear.
Now the Data: I have accurately documented 10 round trips with the old 21” Pirellis, vs. 3 with the Platinum’s. I’ve also ‘normalized’ the Platinum data to reflect the approx. 1% change in revolutions/mile, affecting speed and odometer values.
Baseline: OEM 21” 2.09 m/kWh @60mph avg
Platinum’s on 20”: 1.93 m/kWh @59mph avg
Bottom Line: My new wheels/tires are 7.4% less efficient m/kWh than the OEM 21’s. This % is also confirmed as well by calculating the total kWh value used per segment; the Plat’s use 7.6% more kWh’s to take me the same speed and distance. This is acceptable to me and doesn’t change my routine very much. I used to charge up between 85-95% on both ends to make these trips, now I will probably always start with 95%. I love the new look and hope to get over 45k miles out of these, which is more than double what my OEM’s delivered.
The truck came with the OEM 21” setup, which provided a great ride, quiet, zero vibration, and were very smooth. They wore perfectly evenly, but at 21,000 miles I was at 4/32 all around and I wanted to try something else.
The new Platinum’s are most of the above, but slightly less perfect in each category. Also, these wheels/tires feel noticeably heavy while driving, probably because they are in fact heavier (I don’t know exactly how much). This is primarily noticeable during slow speed turning, accelerating, and one petal stops from 70mph-0 while using only regen as braking force.
All of the driving was done as follows: 100% All Purpose mode, auto height, max regen, soft or moderate suspension, AC always on 72degrees, seat AC on max, stereo on, radar detector on. Majority using cruise control, and maybe 50% use of Highway Assist while on the southbound interstate leg. 21” tire pressure was 48-49psi cold, 20” was 53-54psi cold.
As you contemplate my results, realize that I chose a non-OEM tire size. The 285/60/20 is .6” larger in diameter and .5” wider than my 21” OEM. This puts the overall diameter between OEM 20” and 21” setups, so reprogramming the truck really isn’t necessary. My speedometer shows about 1% difference over 60 or so mph. Using my radar detector as a GPS speed readout, sometimes it reads the same as the dash shows, and sometimes it shows 1mph faster. With the 21’s this used to always match exactly.
Finally, we already know that all new tires are inherently less efficient then worn tires. I don’t know how much in terms of %, but I’m assuming that my efficiency will only improve as the Platinum’s wear.
Now the Data: I have accurately documented 10 round trips with the old 21” Pirellis, vs. 3 with the Platinum’s. I’ve also ‘normalized’ the Platinum data to reflect the approx. 1% change in revolutions/mile, affecting speed and odometer values.
Baseline: OEM 21” 2.09 m/kWh @60mph avg
Platinum’s on 20”: 1.93 m/kWh @59mph avg
Bottom Line: My new wheels/tires are 7.4% less efficient m/kWh than the OEM 21’s. This % is also confirmed as well by calculating the total kWh value used per segment; the Plat’s use 7.6% more kWh’s to take me the same speed and distance. This is acceptable to me and doesn’t change my routine very much. I used to charge up between 85-95% on both ends to make these trips, now I will probably always start with 95%. I love the new look and hope to get over 45k miles out of these, which is more than double what my OEM’s delivered.
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