Joined: Feb 2012
Posts: 19,320
Likes: 5,427
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
8% more tire width is IMO about 8% less PSI. Having said that 120 PSI is WAY HIGH. Is there a reason you run your 23's this high?
I sometimes ask customers if they have a manual shift car and if so does it have a tachometer. If so do they run the rpm up to the red line each time they shift? Tire side wall pressure max is sometimes about marketing and not need. Andy
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AndrewRStewart