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Old 10-03-2016, 08:35 PM   #1 (permalink)
MPGee
'07 Toyota Matrix - 36MPG
 
Join Date: Oct 2016
Location: Southern California
Posts: 28

Small Red - '07 Toyota Matrix
90 day: 37.49 mpg (US)
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Downsizing from 205mm & 16" to 195 & 15" wheels/tires worth it?

Hi all,

I'm getting close to needing new tires on my '07 Toyota Matrix. I'm running factory 16" steel wheels with factory size tires. I'm considering going to '07 Corolla 15" steel wheels. I believe my #s for the below are correct:

Existing stock Matrix wheel/tire:
205/55R16, 16x6.5" steel wheel, 5x100 bolt pattern, 39mm offset

Proposed stock Corolla wheel/tire:
195/65R15, 15x6" steel wheel, 5x100 bolt pattern ?? offset

See attached photos for calculator results from rimsntires.com's calculator (I can't post links, b/c I'm a n00b. )

How much gains do you think I can expect from getting a 10mm "thinner" tire and -1" on rim size? The calculator says that the 15" wheel+tire should be ~3 lbs lighter.

I drive, maybe, 40% city, 60% highway. I would be trying to get some Corolla steelies used or from the junkyard.

Thx in advance.

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