JR 5 Reading others reviews helped me decide to buy these tires. I wasn’t sure how wide I could go before maxing out on my frame and fork but these tires were just right. 40mm wide at tire wall is narrower than 1.75 which is 44mm. These tires were very easy to fit unlike the Schwalbe tires they replaced and when you run them with about 30-50 psi, they are very soft and comfortable on gravel. Very happy with this product and definitely recommend