Yep, with 235/40 iso 255/45 the speed and ODO will read about 5.5% too high. If you just want the 20mm skinnier tires with about the same wheel diameter to not affect the speed and ODO, you should try to find 235/50R19 tires. Cor.
On Fri, Mar 14, 2025, 8:09 PM Mark Hanson via EV <ev@lists.evdl.org> wrote: > PS, > > > > A friend Chip Gribben just noted to me the Tesla-3 has skinnier 235/40 > R19’s (instead of the Y’s 255/45 R19). The Model-3 has *more* upper A arm > clearance due to the smaller tires. > > > > The only problem is according to Phil’s calculator, the Model-3’s tires > are also smaller diameter throwing off the speedometer/odometer. > > > > Best Regards, > > Mark > > > > From: Mark Hanson [mailto:markehans...@gmail.com] > Sent: Friday, March 14, 2025 9:53 PM > To: 'p...@ingineerix.com' > Cc: 'Electric Vehicle Discussion List'; 'Kevin Horton' > Subject: Coil Spring Spacers: Tesla Y upper control arms chewing up inside > tire corner > > > > 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 > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20250314/bb7c63bb/attachment.htm > > > > _______________________________________________ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > HELP: http://www.evdl.org/help/ > > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20250314/26bacbae/attachment.htm > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20250314/cf7d1931/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
