I don't know. I have a non-Sport, running the "Eco" (higher) pressures, and use my car almost 100% heavy commuting. Wife had a baby soon after I got my car so haven't done any sport driving save giving people rides at work.
I asked my Tesla Ranger for an opinion. He's had some track experience. So it sounds like the T1R's would be a good choice. But he's saying I shouldn't mix AD07 front and T1R rear. So that means taking off perfectly good fronts, or sticking with AD07's until my front tires wear out. Any thoughts?
When you switch tires there's a special mode for retraining it for the tire diameter. I believe there's also a long-term correction feature, as VFX said his 1.5 didn't have the learn tires command, but it adapts over time. I think my Ranger was more concerned that the mixed brand tires would be made of different materials, which could therefore expand differently as they warm up.
Hi. About to replace the Yoko AD07s on the rear (6K miles from new!) but it looks like they have been superceded by AD08s Yokohama Tires – ADVAN Neova AD08 Max Performance Street Track Day Assuming both types are still available can any one see a reason not to swap over to the AD08 for the rears and leave the fronts as AD07s (the fronts look new!).
This morning I went ahead and switched over to Toyo Proxes T1R on all four wheels. The rear AD07's were even worse than I thought, but the fronts had lots of wear left so I kept them for possible future use. Or maybe someone else will want them... My first impression is that handling, acceleration, and tire noise are all good. No complaints. We'll see if they wear a little better.
I called Yokohama. They have no plans to produce the AD08 front tires in the same size as the AD07s so that won't work unless you get a wider tire or mix tires. I wish they'd make the AD08s in the correct size.
See if you notice any different in range too. People are reporting some reduced range having had their Roadsters for a while, and tend to attribute it to the battery pack or firmware changes, but tire changes could be a factor too. One of the "claims to fame" for the AD07 was low rolling resistance.
I believe that most/all of the comments I've seen about reduced range have referred to reduced Ideal Range indicated at the end of a charge, instead of referring to actual range that they believed they would get. But knowing specific range differences due to any types of changes (different tires, inflation, temperatures, speeds, etc.) are interesting.
Could ideal range get automatically revised downwards over time if the car computers noticed that wh/mi was higher than before? Does ideal range take into account any readings from the car history or is it just a simple calculation based entirely on pack SOC?
I thought that what I'd read seemed to indicate that people thought (*) that the ideal range was essentially based on how much energy the car thought it could get out of the pack used in some simple calculation that didn't learn from driving, but that could obviously change (firmware), if it was even true. (*) I know I should question conclusions not directly supported by information from Tesla.
Hmm. I don't have references to post here, and searching didn't help, but I seemed to remember that early on we had enough evidence that there was a small portion of the 'ideal range' that was based on driving history. I'm tempted to spend a week pursuing additional data ;-). It's been so long...
I don't have references either, but it is my understanding that ideal range is strictly a calculation based on pack capacity using approximately 225 Wh/mile. When using more energy per mile ideal miles will decline quicker then actual miles driven. With my snow tires on this winter I have never gotten close to either the 225 Wh/mi or ideal range.
no, ideal range represents in a way the SOC. Ideal Range = SOC * xy wh/mi . xy is unknown to me but from my experience on flat streets it should be the power consumption at a speed of 80 ... 90 km/h with top on. The estimated range takes the readings from the last 40 mi into account, but I would never rely on this. Not because it is inaccurate but because it might lead to wrong conclusions. E.g. after slipstreaming behind a truck for a while you est. range might be higher than the ideal range, but as soon as the truck leaves the autobahn this "extra range" melts like snow in the summer. For travelling long distance I try to keep my actual distance to the target below the ideal range in standard mode. If this isn't possible I always look for a charging station on my way. If you are in a region with high mountains I would reduce the ideal range by 20 %, but I never tested this. (lack of high montains were I live)
Yes, I just switched to T1R tires. So far they're great. Give me a couple of weeks and I'll let you know if I notice anything different.