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Model Y Performance - going from 21" to 19" wheels

mathewbeall

Member
Mar 4, 2020
18
24
Mission Viejo, California
Hello Folks!

I want a bit more smoother ride, as well as the advantage of more mileage on my Model Y. Now that the software update has the option to change the size of your tires, I am getting things ready.

I like the look of these:

Tesla Model Y 19" TSV Flow Forged Tesla Wheel and Tire Package (Set of - T Sportline - Tesla Model S, 3, X & Y Accessories

Normally I would just order the wheels/tires and go to a tire shop and have them replace them - and then sell the old wheels in a local marketplace.

Is it any different with Tesla? (This is my first Tesla). Not sure if I have to have the Tesla service folks do it, or if I can go to any reputable tire shop.

Thanks!

Matt
 

Lozzy

Member
Mar 15, 2020
207
136
NC
Other than the TPMS sensors that are model y Bluetooth specific, it’s the same. They come in that tsportline package or must be bought from Tesla. The advantage is they don’t even have to be programmed to the car, it does it automatically once you start driving.
 

glide

Active Member
Jun 6, 2018
2,858
2,851
USA
Hello Folks!

I want a bit more smoother ride, as well as the advantage of more mileage on my Model Y. Now that the software update has the option to change the size of your tires, I am getting things ready.

I like the look of these:

Tesla Model Y 19" TSV Flow Forged Tesla Wheel and Tire Package (Set of - T Sportline - Tesla Model S, 3, X & Y Accessories

Normally I would just order the wheels/tires and go to a tire shop and have them replace them - and then sell the old wheels in a local marketplace.

Is it any different with Tesla? (This is my first Tesla). Not sure if I have to have the Tesla service folks do it, or if I can go to any reputable tire shop.

Thanks!

Matt
I just mounted a set of these on my MYP this weekend. They come with everything ready to go out of the box. You could also bring/have them shipped to any tire shop.

Tesla will even come out to your house and do the swap for you but I think that costs a bit more.
 
  • Disagree
Reactions: HotIce

mathewbeall

Member
Mar 4, 2020
18
24
Mission Viejo, California
Yep - or at least it did on mine!
 

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fr4c

Member
Jan 4, 2019
64
31
New Jersey
Put on a set of 20" TST's last week as winter tires to replace the 21" Ubers on my MPY. Afterwards just go into the service menu and change the wheels/tires to the 20" Induction since I kept the same tire size.
 

DaveORD

Member
Mar 12, 2020
636
556
Chicagoland
So the new software update for the Y allows you to enter any tire size and everything adjusts to the new diameter?

You can change the diameter of the rim used to one of the 3 Tesla options (19, 20 or 21), which is used to adjust the estimate for miles remaining with the current battery state of charge. That's all it does, nothing more. It does not allow you to enter in any custom tire size or overall diameter, it assumes that you are using on of the 3 Tesla options that all result in the same 28.0 inch diameter, no matter if you select 19, 20 or 21.

If you install a tire that results in an overall diameter that is not 28.0 inches, then you will have speedometer and odometer issues, your Tesla will be over or under reporting. By how much all depends on how much that new tire deviates from the expected 28.0 inch diameter. Use this site to compare and determine. Tire Size Comparison The Tesla defaults in the settings are:
  • 255/45 R19
  • 255/40 R20
  • 255/35 R21
It is probably best to stick to one of these sizes but if you want something else, do your homework first and make sure it will work and you are okay with the outcome.
 
  • Informative
Reactions: MikeNY

drive4fun757

Member
Dec 31, 2020
7
0
Bay Area
Yep makes sense. I guess my question was going from Uberturbines (21) to 20 or 19s on OEM which are square. Are the diameters all the same? Sorry I didn't do the conversion. But from this quote it seems like even the staggered setup for the 21s result in a 28 inch diameter.


You can change the diameter of the rim used to one of the 3 Tesla options (19, 20 or 21), which is used to adjust the estimate for miles remaining with the current battery state of charge. That's all it does, nothing more. It does not allow you to enter in any custom tire size or overall diameter, it assumes that you are using on of the 3 Tesla options that all result in the same 28.0 inch diameter, no matter if you select 19, 20 or 21.

If you install a tire that results in an overall diameter that is not 28.0 inches, then you will have speedometer and odometer issues, your Tesla will be over or under reporting. By how much all depends on how much that new tire deviates from the expected 28.0 inch diameter. Use this site to compare and determine. Tire Size Comparison The Tesla defaults in the settings are:
  • 255/45 R19
  • 255/40 R20
  • 255/35 R21
It is probably best to stick to one of these sizes but if you want something else, do your homework first and make sure it will work and you are okay with the outcome.
 

Jmeitz

Member
Jul 8, 2020
106
70
St Louis
Hello Folks!

I want a bit more smoother ride, as well as the advantage of more mileage on my Model Y. Now that the software update has the option to change the size of your tires, I am getting things ready.

I like the look of these:

Tesla Model Y 19" TSV Flow Forged Tesla Wheel and Tire Package (Set of - T Sportline - Tesla Model S, 3, X & Y Accessories

Normally I would just order the wheels/tires and go to a tire shop and have them replace them - and then sell the old wheels in a local marketplace.

Is it any different with Tesla? (This is my first Tesla). Not sure if I have to have the Tesla service folks do it, or if I can go to any reputable tire shop.

Thanks!

Matt
When I installed my 19” martians I did not notice any difference in speed. I selected all 3 tire sizes to test and my phone matched my speedometer. It’s just visual and estimated range. Tesla verified this for me as well.
 

azentropy

Member
Mar 26, 2018
182
108
Surprise, AZ
I went from the uberturbines to a square setup of the TS5 19". I just changed the wheel setup to the 19" Gemini's. Pretty simple.

BTW - Ride is much smoother. However so far I'm not seeing the range/efficiency improvement I was hoping for. I still think there is some improvement in shorter drives, but nothing on highway driving. Which sorta makes sense as the weight improvement helps more with getting going but not as much when already moving. Also the uberturbines are more aerodynamic than the TS5s even though they are uber heavy. If you go with the TSV I'd think you would see better range/efficiency than I am.
 
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JHCCAZ

Member
Feb 2, 2021
102
119
Tucson
It seems to me that the car should be running a background check and calibration routine to compare velocity & delta-position (derived from GPS) against the traditional speedo/odo results (derived from rotations x tire-circumference). Rotations provide the best real-time data but the GPS-based calibration would nail the accuracy by calculating the true on-road circumference over somewhat longer intervals of primarily straight-line driving.

This feature would obviate the need to enter correct diameter and/or would update incorrect entries. It would account for variances of wear, pressure and temperature, provide traceable evidence in defense against disputed speed claims, and back up the TPMS readings.

I think this should be a standard feature of any modern GPS-equipped vehicle, and certainly well within any Tesla's capabilities.
 

Kennymb5384

Member
Sep 28, 2019
359
215
Seattle
Switched from 21" to 20" just for a little more comfort. My 0-60 actually improved. Did 5 pulls with the 21" and 5 with 20" on my Dragy.

21" 3.5 sec (w/ roll out)
20" 3.3 sec (w/ roll out)

state of charge was between 85-90%

pretty consistent times for the most part. Just 1 off on the 21" attempts (3.6)
 
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hakwuzhere

Member
Nov 19, 2020
21
14
Maryland
The model Y rides so much better on 19's, I do occasionally wish I went with 20's but I saved $500 on the wheels so I can put that towards coilovers later this year... Car is so close, just needs a drop.


PXL_20210306_1941117522.jpg
 

acarney

Active Member
Jul 9, 2019
2,433
1,498
Richland, WA
If anyone wants to trade 20" inductions to gemini wheels and are in the pacific northwest, I have a set of gemini's with less than 500 miles on them 😊
 

Tifighter

Supporting Member
Aug 14, 2018
118
647
WA
FWIW, I have a set of Tsportlines on my X. Tesla service will change complete wheelsets for me (example - winter wheelset change), but they will not mount or remove tires from aftermarket rims. Factory rims only. Just something to be aware of.
 

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