Forget gear inches (which is stupid anyway). This is simple math.
48 / 34 = 1.412
1.412 x 25 = 35.29
A 35T ring will get you closest, but I don't think I've ever seen a 35. A 36T ring will give you a bit larger low gear. A 34T ring will give you a bit lower low gear.
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RIP 01/08/25...2022 Trek Supercaliber, 2018 Storck Fascenario.3 Platinum, 2018 Trek Procaliber SL Singlespeed, 2017 Bear BR1, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP
Last edited by Eric F; 02-14-23 at 06:24 PM.