On Wednesday, July 19, 2017 at 3:25:24 PM UTC-4, Bob F wrote:
On 7/19/2017 11:56 AM, Mad Roger wrote:
On Wed, 19 Jul 2017 11:38:24 -0700 (PDT),
trader_4 wrote:

How many people looking at a stylish SUV think that those wheels look
like they steer better?

Maybe I'm wrong that people try to replicate an image of speed and handling
(e.g., why do people put M3 badges on a non-M3 bimmer then?).

Anyway, I just want to know what the performance impact is of a larger
diameter change of one inch.

This Car and Driver article tries to answer the question:
Effects of Upsized Wheels and Tires Tested
http://www.caranddriver.com/features...d-tires-tested

"What¢s immediately apparent from the results is that as the wheel-and-tire
packages get larger and heavier, acceleration and fuel economy suffer.
Neither is a huge surprise, but we measured a 10-percent drop in fuel
economy and a four-percent degradation in 0-to-60-mph acceleration from the
15s to the 19s"


Without adjusting the gearing? Clearly, they are operating the engine
way out of it's efficiency range. Why would anyone do this?

+1