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Originally Posted by Photog
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Originally Posted by Mike
Somewhere on here I had a discussion about tire size, going larger diameter, to reduce rotations
per mile, and to try increase mileage, but I'm darned if I can remember where it is.
Feel free to resurrect it if you can locate it.
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I think I found it. I did a search for "tire size MPG".
viewtopic.php?f=9&t=1258
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Originally Posted by Mike
I sent some emails and did a bit of research, probably prior to last Spring when I got the new
set of standard sized tires. I believe the costs of switching to a slightly larger tire size wasn't
recoverable over a reasonable amount of distance and time. Nor was it recommended or safe.
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Were the larger tires that much more expensive than the stock size?
Did you notice any MPG improvement, when you switched to Michelin tires? |
I sent letters to local GM Dealers, as well as GM Canada, describing what I wanted to do.
The main issue was having to not just buy the larger tires, but also the appropriate larger rims, and I believe
there were some other concerns regarding turning clearance inside the wheel wells. When I looked at the info
I'd gotten back, the mpg increase would be marginal, I don't recall exactly how much, but it was less than a 3% improvement.
I decided to go with Michelin AT/2 (more aggressive tread pattern than MS2 series) with OEM specs. I like them, they
ride nice, I try to keep them at 80 psi rear and around 65 psi front, for improved stability and mpg reasons. I think they
help, although again, no idea by how much.
Re: MPG, Fuel Economy, - the definitive resource
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