After reading and evaluating hundreds of posts about how to fix MYP’s biggest problem (extremely bumpy), I concluded that the only real solution is to 1) replace those uberturbines with 19” wheels, AND 2) fix the suspension by installing coilovers. You can’t just do #1 or #2, you need to do both. The fix will cost you a bit but that’s what it takes to make a good car an amazing one.
This is what I did:
- Replaced uberturbine with 19x8.5” Martian forged wheels and fit them with 255/50r19 tires (this size is available in ExtremeContact DWS 06 Plus, which in my opinion has better overall performance than Pilot Sport A/S 4). Tire diameter is 1” taller than OEM tire height but it will fit, anything taller won’t fit. Your speedometer reading will be slightly inaccurate due to increased tire diameter but for me that’s an insignificant compromise. This setup gave my car the necessary 5” side wall to absorb harsh bumps and nasty potholes in NYC, sufficient tire bulge for curb rash protection, and massive reduction in unsprung weight of the wheels.
- Installed MPP Comfort Coilover (no need to buy and install camber arms, toe arms, etc, you only need them if you also want to lower your Model Y), and set the compression and damping levels at your preferred comfort setting (I chose 13/13 for front and rear).
Before buying the coilovers, I contacted Mountain Pass Performance and I was advised to do exactly as I had planned — install the comfort coilovers AND install the tallest side wall tire that will not offend my sense of aesthetics (for me, the 19” wheels are still elegantly tall).
I waited for both the Martian wheels and the MPP coilovers to arrive (and the TPMS) then I ordered the tires and had them delivered directly to the auto shop (Fury Automotive in Mineola, NY). I did both upgrades at the same time, dropped the car at the auto shop at 8am and picked it up at 7pm.
So what’s the difference after the upgrades? I won’t say night and day (a lot of people use this highly subjective term), but the improvement is quite obvious. Noise, vibration and harshness are significantly reduced. Handling of bumpy roads is stil not comparable to luxury SUVs, but it’s definitely at acceptable/reasonable level now (in my opinion). The first time we drove to NYC (before the upgrade) my wife and daughter complained that the car was so bumpy and they can’t ignore the unpleasant experience. After the upgrade, my wife now says that the car is so smooth it feels like a different car.
I’m now really happy with my MYP because no other luxury SUVs can match the amazing speed and advanced technology offered by Tesla, and the extreme bumpiness had been eliminated. I also think that the new wheel setup made my MYP look better (the larger tire diameter filled the wheel well quite nicely).
