Well, the difference is questionable/marginal. While the 265mm tires are 8% wider than 245mm, there's only a 4% increase in total contact patch area. The contact patch width is larger, but the length is shorter for the 265s. The wider you go with tires, the shorter the length of the contact patch gets, since the contact patch area is roughly calculated by the weight of the car times the PSI in the tire (among other factors, too). If you put super wide 330mm tires on the car, you're not going to get a big increase in the contact patch size, as the length will continue to shorten as the width increases. The difference in sidewall is just 7mm, or about 1/4". Again, marginal and I would challenge anyone to be able to visually tell the difference (from 5 feet or more away) between two Teslas, on with staggered rears, and another without. My first Model S P85+ had the staggered setup, which I had driven about 10k miles on. I swapped the rears out with 8.5" rims and 245mm tires (same brand/model), and could never, ever notice a difference in handling. The increased performance of the Performance Plus (+) suspension is from the actual suspension, not the staggered tires. I then ditched the crappy stock Michelin PS2s for the Hankook Ventus V12 evo2s, and never looked back. Simply changing the tires out had a HUGE difference in handling, noise, comfort, and performance. My other car is a E39 M5 with 120k miles on it, so I know how performance sedans are supposed to handle. And the staggered rims offer exactly ZERO performance benefits but they do have several downsides, as previously mentioned.