Changes

I screw in supatracks metal spikes for winter running, which adds grip on icy surfaces. They are awkward to screw into the Reebok sole, but it's possible with a little practice and swearing. These spikes can add extra grip on some slick rock, as the metal spike digs though any surface film. However, on harder smooth rock, they seem to have less grip, so it's not a perfect solution. The metal studs reduce the wear a little on the Reebok sole, and only rarely come out. The main downsides are cost and effort adding them, which can be a bit of a pain.

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Frankenshoes spikes in shoe.jpeg| The spikes in the sole, after some distance. The sole has worn down around the spike, and you can see where one is starting to break free. However, actually losing a spike is unusual.

Frankenshoes spike tool.jpeg| The spike in the tool used to insert it. This is tricky, and I had to file the tool down slightly to get a better grip, and I have to use vice grips to hold the screw end and push the tool on hard. Unlike a screw, the spike doesn't have a tapered thread, so it's hard to get it started.