I would've thought the 19" option would have included LRR tires, as it seems to be the more 'eco' choice. Anyone have or planning to switch to LRR tires? Hypothetical range/efficiency increases?
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Three Letter Acronym (TLA)
In General, etiquette suggests that when using TLA's that you define what they mean the first time you use them in a post or document, as demonstrated in the above line.
It took me a few minutes to figure out the LRR stood for Low Rolling Resistance!
I work in the IT Industry where TLA's are endemic so it's a pet peeve.
Back to normal programming. :smile:
Once winter is over I am looking forward to coupling LRR Tires with light-weight wheels. Moving to a LRR plus a lighter wheel should increase efficiency with the side benefit of having better performance. Shaving 10lbs of unsprung weight per corner and coupling it with new LRR rubber should be the holy-grail of the Model S.
Hopefully my logic holds up as this won't be a cheap endeavor.
Yeah it's too bad there aren't any lightweight wheels that are cheap. Those O.Z. Superforgiata's are really expensive!
Does anyone know what one of the 19" Tesla rims weighs?
As for traction, the LRR's have very good traction, but it's not nearly what the summer only tires had. I can regularly get traction control to come on when doing 0-30 sprints now (I have the P85). All in all, I've very happy with them, but I'm looking forward to the warmer weather and putting the 21"'s back on!
You weren't able to do that with the 21" wheels, especially in the cold?
This is probably not the smartest question but does having a tire with a very low rolling resistance start to affect safety (traction) at some point?
I think that by definition a LRR tire is less safe than a regular tire.
LRR = less friction
Less Friction = less grip
less grip = less safe
Therefore, in geometric proof style, we have shown that LRR = less safe
At least, that's how my brain wraps around it. If I am wrong, perhaps someone can school me, but I think that LRR tires will always incorporate a performance compromise to benefit the eco side of things.
Cheers.
I plan take one off and weight it this weekend to validate my cost benefit ratio. The wheels that I am looking at currently retain the "stock" look while weighing 22 lbs per wheel for 20s. I will then calulate the weight of the tires that I plan to put on and compare it to the total weight of the wheel plus tire of the stock 19s.
I will report back with results.
I'll be putting Michelin Primacy MXM4's on my 19" wheels.