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· Premium Member
5,470 Posts
Yeah, that can be a tough one to consider.

The biggest reason rolling resistance is reduced with higher pressure is because the tire presents a smaller 'footprint' front to rear.
The side to side 'footprint' stays about the same due to the way the radial belting maintains the tire tread width.

So, knowing that Chevrolet, in conjunction with the tire maker, determined that 35 psi (ambient) was the best compromise for cold/hot/wet/dry handling as well as acceptable tread life and rolling resistance on this tire mounted on this vehicle.

Hydroplaning is, to degree, the result of inadequete tread depth, causing the tire to ride up on the water rather than pump it out of the tread........I've read your depth measurements and that isn't an issue in your case.
But, I do think it important to maximize the footprint length to minimize slip potental.

The other side of the coin.....a shorter footprint puts more weight on the ground per sq. in. possibley enhancing traction, comes into play.

All the thoughts to say, probably should run at the specified pressure......and do slow down a bit.....any tire regardless of tread depth hydroplanes under the right conditions.

Have a safe trip.

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