You’ll need an Allen wrench, an 18 mm wrench, and a pry bar.
1. Dip the tire into boiling water for 20 minutes or microwave it for 3 minutes (3 times, 1 minute each) to soften it.
2. Cover the inside of the tire with Vaseline or soap water (do not use petrol-based products or lubricants).
3. Place either side of the rim on the tire and step on it (you can place another tire underneath this tire for additional balance).
4. Take the tire off with the pry bar.