this post was submitted on 12 Dec 2024
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Am I understanding you correctly? There is a standard somewhere that says you can't have tires of a certain width on a car unless the car is also broad?
Why is that even a requirement? I thought broad tires were safer, why would the width of the car have anything to do with it?
No, you're not understanding me correctly. Mostly because I misspoke, so that's on me, not you.
The contact patches I was talking about are the corners of the rectangle. Everything between the wheels is the footprint.
The area of the footprint basically determines the minimum MPG you can have. (The more complicated point is that it is related to all the vehicles you produce rather than a specific minimum, but that overcomplicates the issue. The point is that CAFE standards provide strong incentives for manufacturers to increase the "footprints" of their vehicles. The larger the footprint they can claim, the less MPG improvement they need to make. So, longer and wider wheelbases.
Thanks for the explanation. It's just infuriating
And this is exactly why we don’t see small trucks like Rangers or Dakotas anymore. I don’t know if it’s because it’s impossible to make an engine that efficient or if manufacturers are just lazy, but the consequence is that they can avoid stricter efficiency requirements by simply making bigger (larger wheelbase) and heavier (body on frame vs. monocoque) vehicles.
To be brief, some boneheads ages past decided to class vehicles based on footprint rather than simply weight.
I get it now. Not a chance that's changing anytime soon I suppose, I can see how it's not convenient for manufacturers