Blurry_Eyed
MS Sig #267, MX Sig # 761
Trolling Craigslist, I found a local dealer selling a 2013 P85 they took in trade. They claim it has the "Performance Plus Package (Upgraded Suspension)," yet it does not have a + badge on the back, and the dash display clearly shows "Model S P85" (not P85+). What gives? Could you order the plus suspension on a regular P85? I thought the Plus Suspension was what turned a P85 into a P85+...
The Plus Suspention is what turned a P85 into a P85+, but there isn't one answer to this as the '+' option on cars changed over time and eventually most of the '+' suspension improvements went into the entire model line up. For example, I have a Signature P85 (Vin 532). Once the '+' option was announced, you could add the '+' option to factory orders of the P85. Then sometime after you could order the car as a '+' version, Tesla offered a retrofit option. There was what was called an 'identical' retrofit and what I think was a partial '+' retrofit. I opted for the 'identical' retrofit which replaced the entire subframe in my car, replaced all the dampers, added thicker swaybars and changed out the bushings of the car. It was quite a bit of work and was priced in the $20k+ range when I had it done. I don't think Tesla offers that particular option anymore. But Tesla does keep track of the cars they upgraded, so if you have the Vin, you should be able to call Tesla and see what their records show.
Also shortly after I first received the car back after the complete retrofit, Tesla let me know that they had not reprogrammed the dampers to be '+' dampers and let me know they did that over the air for me. I had noticed initially after the car came back to me that it didn't feel as tight as some of the Factory built '+' cars I had driven. Then after they pushed the update, my car felt much better to me.
So the bottom line is that it could be a '+' car even if the original VIN doesn't reflect it. The tires aren't a good indicator because they could have been swapped out. But if the original VIN wasn't a '+' car, Tesla should be able to tell you if it was updated to some version of a '+' car as the company sanctioned retrofits would have all been done at the Tesla service centers and should be logged in the system.