Also remeber, if yours is a Model Y performance, it comes with different tire 
widths front Vs rear. 

Front: 255/35R21 
Rear: 275/35R21
If you did a rotation in the traditional way and didn’t contemplate this, this 
is most likely the reason. 

Marco


Sent from my iPhone

> On Mar 15, 2025, at 3:22 AM, Cor van de Water via EV <ev@lists.evdl.org> 
> wrote:
> 
> Mark,
> Note that a 255/45R19 should be almost precisely 10" wide = 254mm as
> 11" would be 280.
> Are you sure that you are not running 275 or so if you mention about 11" 
> width?
> Cor.
> 
>> On Fri, Mar 14, 2025 at 9:57 PM Steves via EV <ev@lists.evdl.org> wrote:
>> 
>> Did the original Continentals have the same problem?
>> 
>> Wonder if you have bad springs.
>> 
>> -Steve
>> 
>>>> On Mar 14, 2025, at 11:14 PM, Mark Hanson via EV <ev@lists.evdl.org> wrote:
>>> 
>>> Thanks a bunch Phil, nice comparison tire calculator.
>>> 
>>> 
>>> 
>>> Since I just discovered this after buying new Summit tires, I’ll have to 
>>> wear them out first, then get skinnier tires, maybe putting in some coil 
>>> spring separators to limit travel.
>>> 
>>> 
>>> 
>>> It looks like a design flaw, having the upper A arm hardware within an inch 
>>> of the tire & touching when it bounces.  I did get 62K out of them before 
>>> they scraped through on the upper inside front tires.  Rotating more often 
>>> will allow for equal “scraping” 😊
>>> 
>>> 
>>> 
>>> Best Regards,
>>> 
>>> Mark
>>> 
>>> 
>>> 
>>> From: (-Phil-) [mailto:p...@ingineerix.com]
>>> Sent: Friday, March 14, 2025 2:25 PM
>>> To: Mark Hanson
>>> Cc: Electric Vehicle Discussion List; Kevin Horton
>>> Subject: Re: [EVDL] Coil Spring Spacers: Tesla Y upper control arms chewing 
>>> up inside tire corner
>>> 
>>> 
>>> 
>>> Maybe consider one size narrower?  Maybe the Nokians "ran wide".   You can 
>>> use a calculator here to make sure the OD stays the same or less:  
>>> https://www.calculator.net/tire-size-calculator.html
>>> 
>>> 
>>> 
>>>> On Fri, Mar 14, 2025 at 11:06 AM Mark Hanson <markehans...@gmail.com> 
>>>> wrote:
>>> 
>>> Thanks Phil/Kevin etc,
>>> 
>>> 
>>> 
>>> I have the *stock* wide 255/45R19 tires on the car, about 11” wide.  They 
>>> seem too wide to me but that’s what the car came with.
>>> 
>>> 
>>> 
>>> The first set made it to 50K miles - Continental’s that came with the car.
>>> 
>>> 
>>> 
>>> The Nokian’s (much cheaper than Continentals) I’m replacing today made it 
>>> to 62K (which is good) but shouldn’t be rubbing on the inside edge every 
>>> time I hit a bump in the road.  The clearance to the upper A arm is only 
>>> about an inch from the wide tires.  Looks like a design flaw – but if it 
>>> takes +50K miles to eat into the tire corner, maybe not so bad.  I can see 
>>> tire rubber shards on the top of the A-arm where it sticks out near the 
>>> tire.
>>> 
>>> 
>>> 
>>> The car is in the local “Techne-Mech” shop today getting wheel alignment, 
>>> new tires and looking at the A-arms, tie rods etc.
>>> 
>>> 
>>> 
>>> I may have to drive to the dreaded Tesla dealer in Richmond, about 4 hours 
>>> away since they have *no* stealerships in Roanoke VA.   Our other EVs (Bolt 
>>> & Leaf) have *local* dealerships.
>>> 
>>> 
>>> 
>>> Best Regards,
>>> 
>>> Mark
>>> 
>>> 
>>> 
>>> From: (-Phil-) [mailto:p...@ingineerix.com]
>>> Sent: Friday, March 14, 2025 11:47 AM
>>> To: Electric Vehicle Discussion List
>>> Cc: Kevin Horton; Mark Hanson
>>> Subject: Re: [EVDL] Coil Spring Spacers: Tesla Y upper control arms chewing 
>>> up inside tire corner
>>> 
>>> 
>>> 
>>> Yeah, Normal Model Y doesn't do this.  Did you put different size tires on? 
>>>   I don't recommend spacers, the Model Y ride is already pretty poor.
>>> 
>>> 
>>> 
>>>> On Fri, Mar 14, 2025 at 8:07 AM Kevin Horton via EV <ev@lists.evdl.org> 
>>>> wrote:
>>> 
>>> This is very odd.  I haven't seen any similar complaints on the Tesla 
>>> forums that I frequent, so it is quite possible that something is different 
>>> with your car.  Does it have stock wheels and tires?  Or, is there perhaps 
>>> excessive wear of the controls arms bushings or ball joints?  I have seen 
>>> many complaints of issues with those.
>>> 
>>> Good luck,
>>> 
>>> Kevin Horton
>>> 
>>>> On Mar 14, 2025, at 08:29, Mark Hanson via EV <ev@lists.evdl.org> wrote:
>>>> 
>>>> Hi Folks,
>>>> 
>>>> 
>>>> 
>>>> It looks like there’s less than an inch of travel before the upper A arm 
>>>> mount hits the inside of the wide tire, chewing into it.  Thinking some 
>>>> coil spacers, either this type or the 4 smaller piece type would limit the 
>>>> spring travel.  OR installing skinnier tires like the Model-3 has.  Has 
>>>> anyone installed a skinnier tire on the Tesla-Y?
>>>> 
>>>> 
>>>> 
>>>> https://www.amazon.com/Rubber-Coil-Spring-Spacer-Inch/dp/B07Y5LLV2N
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Have a renewable energy day,
>>>> 
>>>> 
>>>> 
>>>> Mark
>>>> 
>>>> 
>>>> 
>>>> Mark E. Hanson
>>>> 
>>>> 184 Vista Lane
>>>> 
>>>> Fincastle, VA 24090
>>>> 
>>>> 540-473-1248 phone & FAX, 540-816-0812 cell
>>>> 
>>>> REEVA: community service RE & EV project club
>>>> 
>>>> Website: www.REEVAdiy.org (See Project Gallery)
>>>> 
>>>> UL Certified PV Installer
>>>> 
>>>> My RE&EV Circuits: www.EVDL.org/lib/mh
>>>> 
>>>> REEVA Demo:  <http://youtu.be/4kqWn2H-rA0> http://youtu.be/4kqWn2H-rA0
>>>> 
>>>> <https://www.weatherlink.com/embeddablePage/show/a88920376f864ecabaed843dd8975b8d/signature>
>>>>  Fincastle Solar Weather Station
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> From: Mark Hanson [mailto:markehans...@gmail.com]
>>>> Sent: Friday, March 14, 2025 9:22 AM
>>>> To: mark hanson
>>>> Subject: Fwd: Tesla Y upper control arms chewing up inside tire corner
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>> 
>>>> Begin forwarded message:
>>>> 
>>>> From: Mark Hanson <markehans...@gmail.com>
>>>> Date: March 14, 2025 at 8:10:33 AM EDT
>>>> To: Electric List <ev@lists.evdl.org>
>>>> Subject: Tesla Y upper control arms chewing up inside tire corner
>>>> 
>>>> Hi Folks
>>>> When my Tesla Y suspension travels, the upper A arm is so close to the 
>>>> tire that it chews rubber out of the inside of the tire.  It’s occurring 
>>>> on both front tires, more prevalent in the right side for some reason, 
>>>> chewed down to the cords, wires sticking out, almost caused a blow out.  
>>>> It’s in the shop now but they’re checking camber alignment, toe in.
>>>> It looks like the wide tires are too close to the upper control arm and 
>>>> any suspension travel more than an inch will chew into the tire. The car 
>>>> has 113K miles currently.
>>>> Best regards,
>>>> Mark
>>>> Sent from my iPhone
>>>> 
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>>> 
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