Currently using Gyeon Q2M Tire Coating. Product is a thick liquid and leaves a finish that is slightly glossy but definitely not the greasy wet look shine that a lot of products produce. Q2M is a SiO2 coating that prevents browning of tires and causes water to bead up and thankfully no sling of the product onto the fenders.
Very happy with Q2M so far and I think I've tried almost every product out there.
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