Quote:
Originally Posted by Tuscany FTX
My neighbor is running the stock(OEM) wheels/tires. They are 275/65/18, which is also what my stock wheels/tires were.
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Uh - you said earlier that he had 17" wheels, not 18's. Can you tell me which it really is? And, is his truck the same model? Because if his is lighter than yours, it's going to be faster too.
I'm going to add that your larger tires DO have more "mass", which means there IS more power needed just to get them rotating (along with the increase in weight they add to your truck, the increased "rolling resistance" due to the larger footprint and the increase in wind resistance you'll see at highway speed due to the larger frontal area).
- Jack