It's a 25% increase in air volume. That's a significant increase.
But as it's a bigger tyre it'll be run at a lower pressure, so may have the same or less amount of air inside as the 25.... discuss
Am using the same tyre pressure - not sure how that effects thing
@Jameo started
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But as it's a bigger tyre it'll be run at a lower pressure, so may have the same or less amount of air inside as the 25.... discuss