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  1. D

    Autocross- SCCA EV-X Class vs. SS

    Haha, nice. Can you do the imperial march next? I guess my early '19 doesn't have the speakers necessary to do this?
  2. D

    Autocross- SCCA EV-X Class vs. SS

    Avoiding a potential PTSD from going through a set of Hoosiers at every event?
  3. D

    Autocross- SCCA EV-X Class vs. SS

    You cut a 265-35-19 tire on stock suspension? Full bump at turn-in? What's your wheel offset and did you also run a spacer? Dang, I guess we gotta stop recommending tires that wide (or wider) to people on stock suspension.
  4. D

    Autocross- SCCA EV-X Class vs. SS

    Sounds like an invitation to get one's butt kicked by a co-driver ;) In semi-related news, tirerack has a few 275-wide 19" Yok's in stock. While not 295-wide ones, but I'm guessing those are still faster than 305-wide Falkens (even if these will pass tech).
  5. D

    Autocross- SCCA EV-X Class vs. SS

    I think they are deliberately slow-walking these requests, possibly expecting to offer pro-rated refunds based on tread depth at the time. My follow-up requests for a status update were being ignored, since I gave them my VIN (allegedly for Falken warranty tracking purposes) two weeks ago. So I...
  6. D

    Autocross- SCCA EV-X Class vs. SS

    Anybody else on the fence about going to the Nationals? Registration fees go up by $130 on Wednesday, and there are just three people registered in the EV-X. If there are several of us contemplating going, maybe we can convince each other?
  7. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    Trying to kill the Nexens to mount some fresh Yok's for the Nats? I see ;)
  8. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    Another reason is "because racecar." In the sim-racing world, people spend crazy money for powerful wheels that'd easily sprain their owners' wrists. Personally, I don't think the amount of effort it takes to steer has much impact on the amount of information the steering feedback offers...
  9. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    If you plan to track the car long-term, 19x10.5 seems like the size you'll end up with, if you want a square fitment. But they won't work out of the box, likely requiring spacers/adapters and/or extended studs. I think @SK360 is running 19x10 +35 with a 275-wide rubber. I think he has MRR M600...
  10. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    What's your timeline? If you need something quickly, I'd suggest looking at tire availability first and then decide on the size. If you're not looking for the most aggressive fitment at the moment, 18" wheels and tires would be much cheaper. 275-wide tire on a 9.5 +35 rim is a pretty common...
  11. D

    Model 3 Performance Spacers

    Click the link. Those come with special lug nuts that pass through the spacer, to make sure tread engagement is adequate. It's not an ideal solution, but it's adequate IMO. Some aftermarket wheels with narrow lug bolt holes are likely a no-go, but with OEM wheels it should work fine.
  12. D

    first thing to do after tire swap?

    Doing custom work definitely involves some additional development costs that would be passed onto the buyer. Tesla would've gotten the same-sized tire cheaper at the same volume w/o going for custom specs. The 'lock people into OEM tires' is the demand side argument that doesn't have anything to...
  13. D

    first thing to do after tire swap?

    May have? Sure. Do they actually have anything other than efficiency? I strongly doubt it. Jacking up pressures will wear out the center rib on most tires (may be not on some tires specifically made as Tesla OEM, and making tire producers make tires specifically for Teslas definitely increases...
  14. D

    first thing to do after tire swap?

    Stateside, XL-rated tires support all they weight they are rated for at 41psi, any recommendation above that is purely for efficiency.
  15. D

    Autocross- SCCA EV-X Class vs. SS

    What's the conceptual difference with lightly brushing the brake pedal? I definitely still have the muscle memory for smoothly managing weight under normal trail braking, but I do struggle doing it consistently with the regen 100% on. Maybe I'll try to gradually dial it up over several events...
  16. D

    Autocross- SCCA EV-X Class vs. SS

    I left foot brake regardless of regen at autox, and occasionally on the street, so I don't forget how to. I think it was ~3%/run instead of 2%/run. Not sure about temps. I should be logging stuff, but since changing phones I've been to lazy accessing my scanmytesla adapter to pair with the new...
  17. D

    Autocross- SCCA EV-X Class vs. SS

    Did a test-n-tune-like event today and tried running with regen off after several runs with it at 100%. Instantly went half a second faster for the next few runs. Did turn it back on and went slower. I guess it means I'm better at left-foot pressure modulation without regen interfering.
  18. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    Idk, I don't feel comfortable lifting one side of the car pretty high up with just the rubber pad friction stopping the jack from sliding out. I like to have a physical wedge of some sorts in there when there both lifting and tilting.
  19. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    I also have that jack from before I had a Tesla , but it's not low-profile enough to fit under my car (~100mm jacking point to ground) with a hockey puck Tesla adapter. I guess one could get some thin jack adapters, but I have another jack that's low enough. I'd be concerned that that 2x4 would...
  20. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    That's what plenty of people on this board have done for looks instead of wider wheels. So, with OEM 8.5-wide wheels/OEM-sized I don't think so. For me, fitting 305-wide tires required about adding ~4mm spacer on top of the wheel fitment described above. A 285-wide wheel would not have required...
  21. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    No need for opposite lock with wide tires, just a slight turn on the wheel and a good bump can do it, unless front bump travel is constrained by aftermarket suspension. OR tons of camber is dialed in.
  22. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    Slap some 15mm/20mm spacer/adapters and call it good. Otherwise be prepared to spend several grand to make it work properly. Most M3Ps run +25 18x10.5 wheels with some kind of upgraded rotors, which push things out 4-5mm. Going to 19 and 20" wheels buys some extra clearance due to the...
  23. D

    Ohm Proton Tesla M3P 2020

    There's 40 in the part number though. I bet it's a wheel meant for the rear as a part of staggered fitment. And here's a 10.5 +40 wheel made for Tesla ;)
  24. D

    Knocking/thudding noise while taking turns on 2021 model 3

    Search FUCA (front upper control arm) noise. A warranty issue for many. Try the app, maybe your local mobile tech would be able to do it in your driveway.
  25. D

    Ohm Proton Tesla M3P 2020

    Seems to be a 20x10 +40 wheel. Gonna need around a 10mm spacer (so, either 15/20mm adapters, or 10mm spacer + extended studs) to fit just the wheel up front. What tires you'd be able to fit will depend what spacer/adapter is used to fit the wheel. Should fit fine in the rear.
  26. D

    Autocross- SCCA EV-X Class vs. SS

    That's an aggressive offset. Since you're likely the first person to try it with a moderately-wide tire with MPP Comforts, I'd maybe email MPP to make sure that MPP Comforts have about the same bump travel as the MPP Sports. Cause if they have more bump (meaning the tire goes deeper up into the...
  27. D

    Autocross- SCCA EV-X Class vs. SS

    It's been two weeks since my claim with tirerack. Barely any news since, but they did ask for my VIN. I bet everything that Hankook/Tirerack are gonna try to weasel out of warrantying these. My plan is to make sure all four of my tires are showing this -- doing some random Corvette club autox...
  28. D

    Autocross- SCCA EV-X Class vs. SS

    Sure, in 2023.
  29. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    My FUCAs are of that kind. I'm basically looking for a set of tools to do reasonably accurate DIY alignments, with a twist that the tools need to have a way to adjust for non-level floors. The ones I linked should take some spacers, so that I could level them once and keep using after. But they...
  30. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    While we're talking alignment tools, anybody aware of something like this, but suitable for M3P's curb weight?
  31. D

    out of spec tire size and traction control

    I'd rather have MPP produce nice-looking wide fenders.
  32. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    I'd try dialing it out with smoother go-pedal application first. You setup should be reasonably balanced as is. Maybe just drive it for a while w/o constantly messing with settings. If that's not your style, try messing with your adjustable shocks. On corner exit your rear shocks are in bump...
  33. D

    MASTER THREAD: Comprehensive Road-Course Modification Guide — Optimizing the 3 for the track

    Thicker rear swaybar will make the rear end even looser. At least in theory. I'd zero out the rear toe and go from there. If it still feels loose with a mild toe-in then investigate. Maybe you're riding on bumpstops given that you're on comfort springs, and adding more roll resistance *could*...
  34. D

    275/30R20's on a M3P?

    305-wide tires just clear the inner upright on an effective +23-25 offset. So, a 275-wide tire should clear with a few mm to spare on a +35 offset wheel. Some tire models may actually rub and require a small spacer. Clearing the fender would need some camber. A 9" wide wheel is an approved...
  35. D

    out of spec tire size and traction control

    255-wide tires are completely fine with a stock offset. Even 265-wide tires of appropriate diameter should be fine. People go for lower offsets for looks.
  36. D

    Switching Model 3P tires

    255/35/20 has a 27" overall diameter and fits okay (you must have really thin fingers, cause it's about 0.1-0.2" away from the top of the knuckle. 245/40/20 is 27.3" in diameter and will almost surely rub against the upright on a stock offset wheel. Some spacers may help, no idea how thick.
  37. D

    out of spec tire size and traction control

    I'm curious if the 'diagnostic' I was doing (in combination with a way-off wheel size setting) contributed to me triggering stuff w/o the track mode on and actually driving aggressively. If you're feeling bored try this: 1) Put the 'wrongest' wheel size setting on 2) Turn your steering full...
  38. D

    out of spec tire size and traction control

    Some people experienced this while going for very sticky tires. Start from this post and follow the discussion on. I think the consensus is that the choice of tire config matters in performance applications if one wants to avoid traction control/ABS/powersteering freakouts. @gearchruncher My...
  39. D

    Tire rolling resistance listing in Consumer Reports

    70% of energy in ICE cars is wasted anyway. Out of 30mpg, only 10mpg goes toward propulsion. A 10% change in that is pretty big. Now remember that the bulk of the energy spent on propulsion goes to fight the air resistance, the implied change in the tire's rolling resistance is at least double...
  40. D

    Track specific brake/rim/tyre combo

    I did a track day on PS4S. They got greasy quick. The RS4s last forever. Haven't tried Conti Extreme Force, but heard good things. Another cheap option is Federal 595RS-PRO/RR, but they need camber up front not to get greasy.
  41. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    No love for Nexen? I swear there was a 285/35/19 for RE71-RS since I considered it, but I guess it's sold out and TR has no plans to reorder, so it's gone from the list.
  42. D

    Aftermarket Wheels on Model 3

    They are available on eBay.
  43. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    The 'simple math' is only a first approximation. Whether the more advanced tire model used at my link is any more useful is unclear though, given the variance between manufacturers and even different batches of the same tire from the same manufacturer.
  44. D

    The quest for wider wheels and tires, 295, 305 and beyond...

    There are tons of online calculators that give different answers. I personally like this one ;) https://bndtechsource.wixsite.com/home/tire-data-calculator
  45. D

    Autocross- SCCA EV-X Class vs. SS

    What's your plan? Did you contact the seller/Falken? Some dude on reddit is claiming to have gotten a pro-rated refund from tirerack.
  46. D

    Autocross- SCCA EV-X Class vs. SS

    Falking Falken. Just 10 runs on these and the dreaded rubber seam separation has already began. Can see it clearly on two tires, and a hint of it on another.
  47. D

    Autocross- SCCA EV-X Class vs. SS

    I gridded next to a guy the other day who's running these on a Mustang. I don't think he bothered with air pressures, but spent most of the time between runs spraying them ;) A couple of turns on the tierod is what, 2.5mm? Ballpark 150 mm away from the pivot point? About a degree of toe-out...
  48. D

    Autocross- SCCA EV-X Class vs. SS

    I get that the course design matters, and if everything was a slalom we'd be losing to Miatas every time. That said, over the past couple years of semi-regular autox-ing after a long hiatus, I've been at a reasonably stable delta in PAX relative to the same people at the top, on courses ranging...
  49. D

    Autocross- SCCA EV-X Class vs. SS

    Anybody here had trouble on concrete? After switching to RT660s, I had a nice PAX result last week on decent asphalt, and the tires felt like they had tons of grip. This week, on a large concrete lot, I'm like half a second behind where I was on PAX relative to top street tire results when I was...
  50. D

    Aftermarket Wheels on Model 3

    I predict these messages getting moved somewhere off-topic.... When people here want a 'flush' fitment just for looks, I believe the standard recommendation is a 15/20mm spacer front/rear. If you don't want to deal with spacers, do the math - front offset of ~20, and rear offset of 15 on a...

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