Longer Upper arms to address high rear negative camber on MS

Longer Upper arms to address high rear negative camber on MS

I did some upper arms for my Feb 2013 delivery MS to address what I felt was too much negative camber. However, I was unwilling to accept the liability of producing production parts. Chris Howell of OpenEVSE fame stepped in and took charge. I just got a set of his links and they are beautiful. The finish is very nice and the CnC approach to making small runs produces excellent quality.

Anyone interested....

AmpedRealtor | August 14, 2014

Question - does installation of these parts impact or void the car's warranty in any way? Do those who have these parts installed have to inform Tesla Service of the customization when undergoing service, tire rotation, and/or alignments?

Please forgive the noob questions.

lolachampcar | August 14, 2014

No manufacturer can warranty aftermarket parts as part of the original equipment warranty so, yes, they would void the warranty on the Tesla upper links that would no longer be on your car. If you have warranty concerns and do not feel comfortable with how installing these types of items might impact your relationship with Tesla then I would suggest you leave your car exactly as Tesla delivered it. It is the safest path.

AmpedRealtor | August 14, 2014

Good advice!

I was concerned with whether this type of mod would void the entire car warranty. I only ask because this is an area where I don't have much understanding but a lot of curiosity! :)

Rocky_H | August 14, 2014

I don't quite remember from the other thread. Are these applicable to the air suspension, coil suspension, or either?

info | August 14, 2014

lola. What is the net effect of the change? How does it affect handling, etc.?

Pungoteague_Dave | August 14, 2014

Didn't you say somewhere that TM participated in the design of these - correct?

Sudre_ | August 14, 2014

Curious if it ends up effecting rage. Seems to me changing how the tires touch the road in any way could effect the range for better or worse.

jjb94941 | August 14, 2014

@Sudre_ Since we're discussing discussing handling, I presume you're referring to Road rage ;)

Sudre_ | August 14, 2014

LOL.. range.

lolachampcar | August 14, 2014

Tesla had nothing to do with these arms. If they had wanted to address the negative camber issue, they could have made them in a heartbeat.

The arms remove between one to one point two or so of negative camber in the rear of an air car. I did not give handling changes a thought as all street cars understeer and camber only affects handling at the limit. For me, a little less understeer at the limit was a bonus.

For others, I suggest that you consider the coil spring cars pass FMVSS-126 (link below for the nerds in the audience) with the minimum specification of camber (-1.0????). So, an air car that rides lower should have no problem passing with -1.4 or at least that is my logic.

With respect to range, toe has much more of an effect than camber so, all other things being equal, you should see little to no change. For reference, my lifetime is 289 WHr/mile @ 20k miles. The links simply help control the raging need for some cars to replace $1K in rear tires so often.

lolachampcar | August 14, 2014

discussing upper links and camber so I thought the reference was to wallet rage at the tire store :)

Tiebreaker | August 15, 2014


AmpedRealtor | August 15, 2014


Red Sage ca us | August 15, 2014

That was weird... It seems the other thread disappeared while I was attempting this reply:

tga: Those may not be Tesla Motors' official policies, but they certainly would be mine.

Yes, if you are a tinkerer, a tuner, a gearhead, a wrencher, or a shade tree mechanic, I am not going to make your life easier when it comes to modifying an automobile design that took millions of dollars and hard work to get in a condition that I consider 'just right' for safe, dependable, reliable, public consumption.

It doesn't matter to me one whit if people have been doing custom modifications to suspension fittings for 100 years. The fact remains that too often shortcuts are made that effectively ruin the handling dynamics when someone decides to experiment on suspensions. The worst of these is when someone does it strictly for aesthetics, rather than performance.

The part that lolachampcar had made is absolutely beautiful. I'm sure it works like a dream. But the sort of people who like to just cut springs are nowhere near as capable, or careful, with their modifications.

Tesla has to be careful. They are seriously being watched at every turn. They cannot afford to support an aftermarket tuning or performance parts industry, that may in any way be seen as unsafe, or failure prone. If anything goes wrong, Tesla will be blamed, not the aftermarket tuner, or the owner of the vehicle, every time. Those of us who are aware of racing, performance, modifications, and enhancements for street and track are much better informed as to potential hazards and justifiable benefits of working on cars. The public at large will just see 'another Tesla crash' on television news reports.

There is also the point that Tesla has gone out of their way to design the parts of their cars to be unique. They are compatible with standard industry components, like tires, wheels, brakes, springs... But are unique designs that do not infringe upon others' patents. Someone that perhaps 'borrows' a design element for use in a one-off project on their private vehicle will probably be fine. But once it is done for a commercial project there may be some legal liability attached.

Until well after the release of the Model ☰, Tesla will have to keep a very strict hand on who touches their cars, how they do it, and why they are allowed to do so. This is not restrictive, and it is not combative. It is prudent, and necessary, for the continued acceptance of electric vehicles by the mainstream populace.

Gearheads just need to be a little more patient is all... Wait until this portion of the electric vehicle has progressed beyond infancy, through being a toddler, and made it at least to adolescence. Ford chassis from the 30's were being turned into hotrods in the 50's and 60's. Surely people can wait until at least the 2020's to get 'under the hood' of the Tesla Model S?

Or maybe not... I'm very surprised that Saleen has been so aggressive in their own campaign to modify the Tesla Model S. Saleen seems to be very confident that they will be able to improve the car significantly. So they will be making wholesale changes for the sake of performance, handling, and appearance. Good luck to them, but I really think they will experience multiple failures before they eventually 'get it right'.

lolachampcar | August 15, 2014

Heck, even I did not produce them for fear of liability so I am the last one to blame Tesla for being risk adverse.

Red Sage ca us | August 15, 2014

lolachampcar: I believe you know your stuff! It is the Naysayers, Bears, Shorts, and idiotic news agencies that would all get it wrong as to blame, responsibility, risk, or liability... They'd never set the record straight... if anything went wrong. And just wait for the next opportunity to report another crash, fire, or fatality in an 'extremely dangerous electric car'.

Brian H | August 16, 2014

I was your grotesque images that the server choked on. Do you blame it?